IBM42M10SNYAA20_技术文档

.

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Features

• 1063 Mbps data rate

• UL & CSA approved

-12

• Short wavelength (SW; distance ≤ 500 m) and

long wavelength (LW; distance ≤ 10 km) ver-

sions available

• Low bit error rate (<10

)

• High reliability (AFR <0.0195%/khr, over 44

khours)

• (ANSI) Fibre Channel compliant (longer dis-

tances are available on a custom basis)

Applications

• Fibre Channel

• FCSI-301-Revision 1.0 compliant (Gigabaud

Link Module)

• Client/Server environments

• Distributed multi-processing

• Fault tolerant applications

• Visualization, real-time video, collaboration

• Channel extenders, data storage, archiving

• Data acquisition

• 20-bit electrical interface

• Parallel electrical

light conversion

• Clock and data recovery

• Serialization/deserialization

• International Class 1 laser safety certified

Overview

IBM42M10SNYAA20 and IBM42M10LNYAA10 are

1063 Mbps Gigabit Link Modules (GLMs). These

highly integrated fiber optic transceivers provide

high-speed serial links at a signaling rate of 1062.5

Mbps, which equates to 100 MBps of continuous

throughput simultaneously in each direction. The

IBM42M10SNYAA20 conforms to the American

National Standards Institute’s (ANSI) Fibre Channel,

FC-0 specification for short wavelength operation

(100-M5-SL-I and 100-M6-SL-I) [1]. The

500 m. A 50/125 µm multimode optical fiber, termi-

nated with an industry standard SC connector, is the

preferred medium. A 62.5/125 µm multimode fiber

can be substituted with shorter maximum link dis-

tances.

The IBM42M10LNYAA10 uses long wavelength

(1300 nm) lasers. This enables data transmission

over optical fibers at distances up to 10km on a sin-

gle mode (9/125 µm) optical fiber.

IBM42M10LNYAA10 conforms to the ANSI FC-0

specification for longwave operation (100-SM-LL-I).

These modules can also be used for other serial

applications where high data rates are required.

They are compact, double-sided, surface mount

modules designed to easily connect to a user’s sys-

tem card. Data and control lines conform to industry

standard TTL interface levels.

Twenty-bit encoded transmit data is received, serial-

ized at 1062.5 Mbaud, and modulated on the laser.

The 20-bit data must be encoded using the 8b/10b

encoding scheme [3, 4] specified by the Fibre Chan-

nel standard.

Incoming, modulated light is received by a photore-

ceiver mounted in the SC receptacle. A Phase

Locked Loop (PLL) recovers the clock and retimes

the serial data which is deserialized into a 20-bit

word and presented to the interface at 53.125 MHz.

The IBM42M10SNYAA20 uses short wavelength

(850 nm) VCSEL lasers. This enables low cost data

transmission over optical fibers at distances up to

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 1 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Pin Configuration

A20

D20

Rx

Tx

♣

A01

D01

♣ As seen from the connector side of the module.

Pin Definitions

Signal

Note

1

Signal

Note

1

Signal

Note

Signal

Note

A01 N/C

B01 N/C

C01 Ground

C02 Ground

D01 N/C

D02 N/C

1

A02 Ground

V_CC

B02 Ground

V_CC

A03

B03 Tx[10]

B04 Tx[11]

B05 Tx[13]

B06 Tx[15]

B07 Tx[17]

B08 Tx[19]

B09 Ground

C03 Tx [00]

C04 Tx [02]

C05 Tx [04]

C06 Tx [06]

C07 Tx [08]

C08 Tx [09]

C09 Ground

D03

A04 Tx[12]

A05 Tx[14]

A06 Tx[16]

A07 Tx[18]

A08 Ground

A09 Strobed ID

D04 Tx [01]

D05 Tx [03]

D06 Tx [05]

D07 Tx [07]

D08 Ground

V_CC

D09

2

3

V_CC

A10

B10 Link Unusable

B11 Reserved

B12 Enable Wrap

B13 Ground

C10 Fault

D10 TBC

A11 Parallel ID [1]

A12 RBC[0]

C11 Transmit SI (N/C)

C12 Comma Detect

C13 Reserved

D11 Parallel ID [0]

4

3

V_CC

D12

V_CC

A13

D13 RBC [1]

5

A14 Ground

A15 Rx[12]

A16 Rx[14]

A17 Rx[16]

A18 Rx[18]

B14 Rx[10]

B15 Rx[11]

B16 Rx[13]

B17 Rx[15]

B18 Rx[17]

B19 Rx[19]

C14 Rx [00]

C15 Rx [02]

C16 Rx [04]

C17 Rx [06]

C18 Rx [08]

C19 Rx [09]

D14 Ground

D15 Rx [01]

D16 Rx [03]

D17 Rx [05]

D18 Rx [07]

V_CC

A19

A20

D19

D20

Enable Comma

Detect

Lock to Refer-

ence

B20 Ground

C20 Ground

1. The serial I/O functions of this card are not implemented. The Serial I/O lines are left open on the GLM.

2. The Strobed ID function is now implemented. This function is new.

3. The Parallel ID bits are tied to V_CCthrough 10kΩ resistors.

4. Pin B11 is a reserved input. It is left open.

5. Pin C13 is a reserved output. It is left open.

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 2 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Ordering Information

Part Number

Signalling Rate

1062.5 Mbps

Optical Fibre Control

Wavelength

850 nm

No

IBM42M10SNYAA20

IBM42M10LNYAA10

1300 nm

Exceptions to GLM and Fibre Channel Specifications

IBM42M10SNYAA20 and IBM42M10LNYAA10 comply with the Fibre Channel (100-M5-SL-I, 100-M6-SL-I

100-SM-LL-I) and GLM specifications except for the following:

• The GLM specification [1] requires that the Fault line be reset by toggling the EWrap signal.

IBM42M10SNYAA20 and IBM42M10LNYAA10 do not operate this way. The Fault line is reset only when

it has been determined that the laser is operating correctly.

• The optical receptacles on the end of the IBM42M10LNYAA10 (long wavelength) do not contain the Fibre

Channel specified “single mode keying” features. Either singlemode or multimode Fibre Channel compli-

ant SC duplex connectors can be inserted into the ports of this GLM.

Laser Safety Compliance Requirements

The IBM42M10SNYAA20 and IBM42M10LNYAA10 are designed and certified as Class 1 laser products.

They are to be used only with another IBM-produced IBM42M10SNYAA20 or IBM42M10LNYAA10, or a cer-

tified equivalent in a point-to-point configuration. This is a requirement for proper operation of

IBM42M10SNYAA20 and IBM42M10LNYAA10.

If the power supply voltage runs over 6.0 volts this GLM may no longer remain a Class 1 product. The system

using the GLM must provide power supply protection that guarantees no voltage in excess of 6.0 volts under

all fault conditions.

Connection of a GLM to a non-approved optical source, operating the power supply above 6.0 V, or otherwise

operating the GLM in a manner inconsistent with its design and function may result in hazardous radiation

exposure, and may be considered an act of modifying or new manufacturing of a laser product under US reg-

ulations contained in 21 CFR(J) or CENELEC regulations contained in EN 60825.

The person(s) performing such an act is required by law to recertify and reidentify the product in accordance

with the provisions of 21 CFR(J) for distribution within the USA, and in accordance with provisions of CEN-

ELEC EN 60825 (or successive regulations) for distribution within the CENELEC countries or countries using

the IEC 825 standard.

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 3 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Block Diagram

Lck_Ref

En_CDet

Com_Det

Fiber

Input

Shift Register

Photo-

detector

Rx

PLL

Rx[00:19]

RBC[0:1]

L_Unuse

Postamp

&

MUX

Clock

Generator

Transition

Detector

Loss of

Light

Detector

Transition

Detector

AC Drive

DC Drive

Shift Register

Tx PLL

Tx[00:19]

Fiber

Output

Laser

EWrap

TBC

Fault

Sense

Fault

Transmit Section

The 20-bit transmit data enters the shift register and is clocked out at 1062.5 Mbps to the serial output pins

and the multiplexer. The AC Drive modulates the laser with the data from the Serial Input pins or the serial-

ized version of the Transmit Data. The Transmit Phase Locked Loop (Tx PLL) generates the internal 1062.5

MHz clock for the shift register from the 53.125 MHz Transmit Byte Clock provided by the system. The DC

Drive maintains the laser at the correct preset power level. Safety circuits in the DC Drive will shut off the

laser if a fault is detected. The multiplexer is used to route the serialized data to the Receive Section while in

wrap mode.

Receive Section

The incoming, modulated optical signal is received by the photoreceiver. The Receive PLL (Rx PLL) phase

locks a 1062.5 MHz clock to the data and sends the data and clock to the shift register (S/R) to be deserial-

ized. The S/R has a byte synchronization detector that recognizes a unique Comma Character so that com-

plete bytes can be unloaded from the S/R without being fragmented. The Clock Generator creates two

complementary phases of a 53.125 MHz clock for use by the host system to latch the Receive Data.

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 4 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Output Signal Definitions

Levels for the signals described in this section are listed in Digital Outputs on page 14.

Receive Byte Clocks (RBC[0:1])

The Clock Generator generates two clock signals, 180 degrees out of phase, for use in clocking the parallel

data (Rx[00:19]). Each of the Receive Byte Clocks has a nominal 53.125 MHz frequency. The timing of these

clocks is shown in the Receive Timings diagram below. If the Enable Comma Detect Signal is active, these

clocks will be reset any time that a Comma Character is received (see Comma Detect (Com_Det) on page 6

and Transmit and Lock to Reference Timings on page 8).

If a stream of Comma Characters (transmitted on both Tx[00:09] and Tx[10:19]) is received, RBC[0:1] will not

operate properly. Having adjacent Comma Characters violates 8b/10b coding.

If there is no modulated light into the receiver or the PLL is out of lock for some other reason, the Receive

Byte Clocks will operate at an unknown frequency between 27 and 106 MHz.

Receive Data (Rx[00:19])

These 20 lines are used to output the deserialized data to the system logic in parallel. Rx00 is received at the

photoreceiver first. Rx19 is received last. The relationship between the Receive Byte Clocks and Receive

Data is shown in the Receive Timings diagram below. The Comma Character will always be aligned on

Rx[00:09].

Receive Timings

Comma Detect

Rx[00:19] Valid

RBC[0]

K28.5

>6.0ns

Data

>6.0ns

>2.5ns

18.8ns

RBC[1]

18.8ns

Note: All critical timings are referenced to the negative edge of the clocks.

If there is no modulated light into the receiver or the Receive PLL is out of lock for some other reason, the

Receive Data lines change randomly.

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 5 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

In most applications, it is assumed that the byte sync character will be transmitted on Tx[00:09]. If the byte

sync is transmitted on Tx[10:19], it will still be received on Rx[00:09].The Comma Character must always be

sent on the even boundary. (Fibre Channel requires word boundaries.)

Comma Detect (Com_Det)

This signal is driven high for one cycle whenever a Comma Character is detected by the deserializer; the

Receive Byte Clocks are also reset. The Comma Character (K28.5) is described in [3].

This function is referred to in the Fibre Channel standard [1] as byte alignment. The K28.5 Comma Character

is defined with two polarities. The GLM only detects the polarity shown in the Comma Character Description

table below.

When the Enable Comma Detect line is high, the Receive Byte Clocks and the byte boundary are aligned

upon receiving a Comma Character. In some applications, including Fibre Channel, this Comma Detect char-

acter is sent out frequently. Many of these applications wish to (re)align the byte boundary relative to the

Receive Byte Clocks whenever a Comma Character is received (Enable Comma Detect line is kept high).

One of the disadvantages of this approach is that in the event of a bit error there is a possibility that a Comma

Character will be created and the OLM will change its byte boundary and thereby cause all subsequent data

to be erroneous until the next Comma Character is received. The decision to keep the Enable Comma Detect

line high should be based on the user’s application.

One oddity with the current Comma Detect function is that a low Enable Comma Detect only quits detecting a

Comma Character after one has been received.

If there is no modulated light into the receiver or the PLL is out of lock for some other reason, the Comma

Detect line will pulse randomly.

The Comma Detect function can be disabled with the Enable Comma Detect input signal. This is described in

Enable Comma Detect (En_CDet) on page 9.

The Comma Detect function will not operate properly if a stream of Comma Characters is transmitted.

Comma Character Description

Data Bits

Rx00

Rx01

Rx02

Rx03

Rx04

Rx05

Rx06

Rx07

Rx08

Rx09

8b/10b Designation¹

Logic Level

a

0

b

0

c

d

1

e

1

i

f

g

h

j

1

X

1. The alphabetical notation (a, b, c, d, e, i, f, g, h, j) conforms to the 8b/10b code description in [3], but is not used in this document

because of the confusion frequently caused by these alpha characters being out of alphabetical order.

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 6 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Link Unusable (L_Unuse)

When this line is high it indicates that the fiber path is open. The Link Unusable line goes high within 650 µs

of the disruption of the incoming received signal. This signal is used in the Link Acquisition Sequence, as

specified on page 11.

Fault (Fault)

Upon sensing an improper power level in the laser driver, the GLM sets this signal high and turns off the laser

within 100 µs.

The GLM specification [2] requires that the Fault line be reset by toggling the EWrap signal. The GLM, how-

ever, resets the Fault line only after it has determined that the laser is operating correctly.

Strobed ID (Strob_ID)

This output is for use in accessing the serial Strobed ID configuration information. It is retrieved by the

method specified in the GLM specification.

Strobed ID Data

Strobed ID Bit

SW

1

LW

1

D0

D1

D2

D3

D4

D5

D6

D7

0

1

0

1

0

1

Parallel ID (Par_ID[0:1])

These two pins tell the system logic what speed OLM is installed.

Parallel ID Definition

Par_ID[1]

Par_ID[0]

OLM Type

132 Mbps

266 Mbps

531 Mbps

1063 Mbps

0

1

0

1

0

1

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 7 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Input Signal Definitions

Levels for the signals described in this section are listed in Digital Inputs on page 15.

Transmit Byte Clock (TBC)

The system logic provides a single-phase Transmit Byte Clock for transmission operations. The relationship

between the Transmit Data and the Transmit Byte Clock is shown in the Transmit Timing diagram below.

Transmit Data (Tx[00:19])

Two 10-bit pre-encoded data bytes from the system logic are presented to the GLM for serialization. Byte 0,

comprised of bits Tx00 through Tx09, is launched first. Byte 1, comprised of Tx10 through Tx19, is launched

last. The Transmit Timing diagram below shows the setup and hold times for the Transmit Data.

Transmit and Lock to Reference Timings

Transmit Timing

Lock to Reference Timing

>500 µs

18.8 ns

Lck_Ref

Transmit

Byte Clock

<2500 bit times

(2.4 µs)

>3.3 ns

>2.0 ns

Rx[00:19]

♣

Tx[00:19]

♣

♣ Data valid after receipt of first K28.5

♣ Data must be valid

In most instances, the minimum required Lock To Reference

time is 120 µs (rather than 500 µs).

Note: All critical timings are referenced to the

positive edge of the Transmit Byte Clock.

Lock to Reference (Lck_Ref)

This active low signal causes the deserializer PLL to acquire frequency lock on the Transmit Byte Clock

(TBC). The Lock to Reference Timing diagram shows the required Lock to Reference time and the wait time

for valid data.

The Lock to Reference line is used in the operation of the receiver PLL. When the incoming data stream is

absent (e.g. when the companion GLM is in wrap mode), the receiver PLL will drift to a minimum or maximum

frequency (27 to 106 MHz) which is far from the nominal operating point. If the incoming data is turned back

on, the PLL will attempt to readjust and may lock onto either the incoming data rate or to one of its harmonics.

To guarantee that the PLL locks on to the fundamental frequency of the incoming data, the Lock to Reference

line is driven low, forcing the PLL to lock onto the Transmit Byte Clock supplied by the system (which is

extremely close to the frequency of the incoming data). It takes a maximum of 500 µs for the PLL to lock onto

to the Transmit Byte Clock reference. Thereafter, the Lock to Reference line is driven high by the system and

the incoming data stream is directed into the receiver PLL. The receiver PLL will achieve phase and fre-

quency lock of the incoming data within 2500 bit times (2.4 µs).

The designer needs to be careful in choosing when the logic exercises the Lock to Reference signal. Since

the receiving system is not generally in control of the incoming signal, it must make some savvy decisions

about when PLL synchronization is lost.

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 8 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Lock to Reference Timings:

The GLM specification for the minimum required Lock To Reference time is 500 µs. Under certain conditions

this minimum required time can be reduced to 120 µs. The following paragraph describes under what condi-

tions this reduced lock time is met.

The frequency of the receiver PLL needs to be in close proximity to the frequency of the incoming data in

order to attain phase lock on the data. To do this, the Transmit Byte Clock is applied to receiver IC module

through a separate pin. The Lock To Reference pin toggles whether the receiver PLL phase locks to the

incoming data stream or to the Transmit Byte Clock. Whenever the Link Unusable line goes high and the

Enable EWrap line is low, the receiver PLL switches to frequency lock onto the Transmit Byte Clock. When

the Enable EWrap line is high, the receiver PLL stays locked to the incoming data stream even when the Link

Unusable line goes high. This process achieves Lock To Reference times as short as 120 µs.

Enable Comma Detect (En_CDet)

This signal activates the Comma Detect function described in Comma Detect (Com_Det) on page 6. When

this line is high, the Comma Detect line will strobe and the Receive Byte Clocks will be reset when a K28.5

character is received.

Enable Wrap (EWrap)

This signal causes the serializer to wrap the Transmit Data to the deserializer and turn off the laser within

20 µs. As a result, the link goes down and the Link Unusable line is driven high.

This sequence causes the PLL to lose bit synchronization making it necessary to cycle the Lock to Reference

line after the Link Unusable line indicates the link is active.

The wrap function on the GLM can be used to improve fault isolation. When the Enable Wrap line is driven

high, the data that would normally have been transmitted on the fiber is rerouted to the receiver. The same

Lock to Reference sequence used for optical data must be used to lock to the received data. When the Lock

to Reference sequence is completed, the data written to the transmit data lines can be read from the Receive

Data lines.

This function is useful to determine whether the GLM is correctly seated in the electrical connector. If the

GLM functions correctly in wrap mode, it is likely that any fault would be in the optical path.

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 9 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Operation

Powering On: Initial Card Outputs

• Receive Data outputs are random.

• Comma Detect will be random.

• Receive Byte Clocks will run between 27 and 106 MHz.

• Fault is low.

• Link Unusable is high.

Ping Pong Interface Available

A shortwave 1063 Mbps GLM that utilizes a 20-bit ping ponged interface is available as a distinct IBM prod-

uct. This interface is designed to reduce simultaneous switching noise. The ping-ponged interface is

designed into the module and is not user selectable.

In the ping pong interface module, Tx[00:09] is timed off the rising edge of the Transmit Byte Clock as shown

below. Tx[10:19] is timed off the rising edge of TBC plus one half of the TBC period using identical timing

specifications as in “Transmit Data (Tx[00:19])” on page 8.

Ping Pong Interface Timings

Clock and Data Timing for Ping Pong Interface

Receive Timing for Ping Pong Interface

Comma

Detect

18.8 ns

Transmit

Byte Clock

Rx[00:09]

Valid

>3.3 ns

K28.5

Data

>2.0 ns

>6.0 ns

>2.5 ns

>6.0 ns

>2.5 ns

♣

Tx[00:09]

Tx[10:19]

RBC[0]

>12.7 ns

<7.4 ns

18.8ns

Data

>6.0 ns

♣

Rx[10:19]

Valid

Data

>2.5 ns

18.8 ns

♣ Data must be valid

RBC[1]

Note: All critical timings are referenced to the

positive edge of the Transmit Byte Clock.

Note: All critical timings are referenced to the

negative edge of the clocks.

Rx[10:19] is timed off RBC[1] using identical timing specifications as in “Receive Data (Rx[00:19])” on page 5.

The skew between RBC[0] and RBC[1] shall not exceed ±1.5ns.

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 10 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Link Acquisition Sequence

The following sequence should be followed to get a GLM in full synchronization with a companion card under-

going a similar sequence. This sequence will also work with a single card when using an optical wrap connec-

tor.

1. Power up the GLM. The Transmit Byte Clock should be running as defined in Transmit Byte Clock (TBC)

on page 8.

2. The Link Unusable line will indicate if the receiver is detecting an adequate incoming light level.

3. Drive the Transmit Data lines to a 01010101010101010101. (This speeds up the synchronization process

and assures that the Comma Detect line will not pulse randomly on the companion card during the

remainder of this sequence.)

4. Drive the input control lines as follows:

a. Enable Wrap: low (will not be changed)

b. Enable Comma Detect: high (will not be changed)

c. Lock to Reference: high

If a link is properly connected and the companion card is in an equivalent state of readiness, the Link

Unusable line will be low. This indicates that the received light is sufficient for operation.

5. Bring Lock to Reference low for at least 500µs. See Lock to Reference (Lck_Ref) on page 8.

6. Bring the Lock to Reference high.

After 2500 bit times (2.4 µs), the GLM should be in bit synchronization (the internal clocks are aligned to

the incoming bit stream), but not yet byte synchronization (the byte is aligned along the same boundary it

had when sent from the companion system to the companion GLM prior to serialization). The Receive

Byte Clock frequency should now be running at 53.125 MHz (the frequency of the companion Transmit

Byte Clock) and the Comma Detect line is ready to indicate reception of the Comma Character.

7. Drive the Transmit Data lines with a K28.5 (Byte Sync) character.

As soon as the GLM receives the K28.5 character from the other side of the link, the clocks will align to the

byte boundary and all the Receive Data lines will have valid data. This will be indicated by the activation of the

Comma Detect line (see Receive Section on page 4).

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 11 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Isolating Hardware Faults

The following sequence can be helpful in isolating most hardware faults:

1. Check the Link Unusable line. If it is low, then the link is active and this process won’t help.

2. Check the Fault line. If it is high, then the laser or the laser control circuitry is faulty. Replace the GLM.

Note: The Fault line is known to come on due to probing.

3. Run a set of patterns through the card while in wrap mode (see Enable Wrap (EWrap) on page 9). If

these fail, run through the checks in "Troubleshooting: What If ..." below.

4. Disconnect the cable and insert an optical wrap plug, or a simplex 50-micron optical cable that works

properly. Rerun the same tests you did in line 3 (not in wrap mode). If these fail, the optics are defective.

Replace the GLM.

5. Rerun steps 1 to 4 on the companion GLM. If all tests pass, replace the cable.

Note: If the tests in line 3 pass, this also verifies that the system and all connections to the GLM are

operating correctly.

Note: This sequence assumes the use of the Link Acquision Sequence listed on page 11.

Troubleshooting: What If ...

The module does not achieve bit synchronization:

• Verify that the transmit and receive frequencies are within 0.01% of each other.

• Verify that valid 8b/10b data is being sent on the transmit side. If the transmit side transmits a

01010101010101010101 pattern, the GLM will synchronize the clock to the data stream in the least time.

The module never gets into byte synchronization:

• Verify that the Enable Comma Detect line is high so that a Comma Character will reset the shift register.

• Verify that the transmitting GLM is getting a correct Comma Character on its Tx[00:09] or Tx[10:19] lines,

but not both.

Note: A common mistake is switching the order of the lines.

The Fault line comes on:

• The laser or its control circuitry is broken. Repeat the power-on sequence to verify the problem.

Note: The Fault line is known to come on due to probing.

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 12 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Absolute Maximum Ratings

Parameter

Storage Temperature

Symbol

T_S

Min.

-40

0

Typical

Max.

75

Units

Notes

°C

1

1, 2

1

RH_S

T_OP

RH_OP

V_CC

V_I

Relative Humidity–Storage

Ambient Operating Temperature

Relative Humidity Operating

Supply Voltage

95

%

°C

%

V

0

70

8

80

1, 2

1

-0.5

0

6.0

V_CC+ 0.7

TTL DC Input Voltage

V

1

1. Stresses listed may be applied one at a time without causing permanent damage. Functionality at or above the values listed is not

implied. Exposure to these values for extended periods may affect reliability.

2. Excludes condensing environment.

Operating Conditions

Parameter

Ambient Operating Temperature

Symbol

T_OP

Min.

10

Typical

5.0

Max.

50

Units

°C

V_CC

RH_OP

f_TBC

Supply Voltage

4.75

8

5.25

80

V

%

Relative Humidity Operating

Transmit Byte Clock

53.1197

53.1250

53.1303

MHz

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 13 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Electrical Characteristics

Power Supply

Parameter

Symbol

Min.

Typical

520

Max.

600

620

100

Units

mA

Current (@ 5.0 V)

530

mA

Current (@ 5.25 V)

Ripple & Noise

mV(pk-pk)

Digital Outputs

Parameter

Symbol

Min.

Typical

Max.

Unit

Notes

Receive Byte Clock, Receive Data, Comma Detect Drive Levels

V_OH

V_CC

0.6

2.4

0

V

Data Output, Voltage - High (Source 0.5 mA)

V_OL

Data Output, Voltage - Low (Sink 0.5 mA)

Receive Byte Clock, Receive Data, Comma Detect Timing

Receive Byte Clock Duty Cycle

40

60

3.0

2.4

%

t_r

t_f

Rise Time

0.7

2

ns

1

Fall Time

0.7

2.5

6.0

2.5

ns

Receive Data Setup Time

Receive Data Hold Time

Setup Time for Data Rx[10:19] in Ping-Pong Mode

2

Hold Time for Data Rx[10:19] in Ping-Pong Mode

6.0

27

ns

Unlocked Frequency

106

MHz

Link Unusable and Fault Driver Levels

V_OH

V_OL

V_CC

0.4

2.4

0.0

V

Data Output, Voltage - High (Source 4.0 mA)

Data Output, Voltage - Low (Sink 4.0 mA)

Parallel ID Bits

V_OH

V_CC

Output Voltage

V

2

1. Rise and fall times are measured from 0.8 to 2.0 volts with the outputs driving a 10 pF lumped capacitive load.

2. See “Ping Pong Interface Available” on page 10 for a description of this timing interface.

3. The Parallel ID bits are tied to V_CCthrough 10k ohm resistors.

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 14 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Digital Inputs

Parameter

Symbol

Min.

Typical

Max.

Units

Notes

Enable Wrap Level

V_IH

V_IL

V_CC

0.8

2.0

0.0

V

1

Data Input, Voltage - High (Sink 10 µA)

Data Input, Voltage - Low (Source 2 mA)

Transmit Data, Transmit Byte Clock, Enable Comma Detect, Lock to Reference, and Transmit SI Levels

V_IH

V_IL

V_CC

0.8

2.0

0.0

V

1

Data Input, Voltage - High (Sink 10 µA)

Data Input, Voltage - Low (Source 1 mA)

Transmit Byte Clock, Transmit Data Timing

t_r

t_f

Rise Time

3.2

ns

2

Fall Time

3.2

68

ns

%

Duty Cycle

32

Positive Edge Jitter

Frequency

0.5

ns

f_TBC

53.1197

53.1250

53.1303

MHz

ns

Transmit Data Setup Time

Transmit Data Hold Time

2.0

3.3

ns

1. The overshoot and undershoot limits for the logic inputs are 0.7 V above V_CCand ground, respectively.

2. Rise and fall times are measured from 0.8 to 2.0 volts with the outputs driving a 10 pF lumped capacitive load.

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 15 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Optical Characteristics

Short Wavelength

Parameter

Optical Power Budget

Symbol

OPB

Min.

7

Typical

Max.

Units

dB

Notes

Receiver Specifications

Return Loss of Receiver

Received Power

RL

12

-17.0

770

dB

dBm (avg)

nm

0.0

1

λ

Operating Wavelength

860

Transmitter Specifications

λ_C

∆λ

PT

Spectral Center Wavelength

Spectral Width

770

860

4

nm

nm (rms)

dBm (avg)

dB

Launched Optical Power

Optical Extinction Ratio

Relative Intensity Noise

Eye Opening

-10.0

9

-5.5

2

3

4

5

6

RIN₁₂

-120

20

dB/Hz

57

% (pk-pk)

Deterministic Jitter

DJ

1. The minimum and maximum values of the average received power in dBm give the input power range to maintain a BER < 10^-12

These values take into account power penalties caused by the use of a transmitter with a worst-case combination of transmitter

spectral width, extinction ratio, and pulse shape characteristics.

.

2. Launched optical power is measured at the end of a 2 meter section of a 50/125 µm fiber (N.A.=0.20) for the IBM42M10SNYAA20

(short wavelength GLM) and a 9/125 µm fiber for the IBM42M10LNYAA10 (long wavelength GLM). The maximum and minimum of

the allowed range of average transmitter power coupled into the fiber are worst case values to account for manufacturing vari-

ances, drift due to temperature variations, and aging effects.

3. Extinction Ratio is the ratio of the average optical power (in dB) in a logic level one to the average optical power in a logic level zero

measured under fully modulated conditions in the presence of worst case reflections.

4. RIN₁₂is the laser noise, integrated over a specified bandwidth, measured relative to average optical power with 12 dB return loss.

See ANSI Fibre Channel Specification Annex A.5 [1].

5. Eye opening is the portion of the bit time which is error free for a given bit error rate (BER). The Fibre Channel standard for BER is

<10^-12. The general laser transmitter pulse shape characteristics are specified in the form of a mask of the transmitter eye diagram.

These characteristics include rise time, fall time, pulse overshoot, pulse undershoot, and ringing, all of which should be controlled

to prevent excessive degradation of the receiver sensitivity. When assessing the transmit signal, it is important to consider not only

the eye opening, but also the overshoot and undershoot limitations.

6. Deterministic Jitter is measured as the peak-to-peak timing variation of the 50% optical signal crossings when transmitting repeti-

tive K28.5 characters. It is defined in FC-PH, version 4.1, clause 3.1.84 as:

Timing distortions caused by normal circuit effects in the transmission system. Deterministic jitter is often subdivided into

duty cycle distortion (DCD) caused by propagation differences between the two transitions of a signal and data depen-

dent jitter (DDJ) caused by the interaction of the limited bandwidth of the transmission system components and the sym-

bol sequence.

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 16 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Long Wavelength

Parameter

Symbol

OPB

Min.

9

Typical

Max.

Units

dB

Notes

7

Optical Power Budget

Receiver Specifications

Return Loss of Receiver

Received Power

RL

12

dB

dBm(avg)

nm

-20.0

1270

-3.0

1

λ

Operating Wavelength

1355

Transmitter Specifications

λ_C

∆λ

PT

Spectral Center Wavelength

Spectral Width

1270

1355

6

nm

nm (RMS)

Launched Optical Power

Optical Extinction Ratio

Relative Intensity Noise

Eye Opening

-9.0

9

-3.0

dBm (avg)

dB

2

3

4

5

6

RIN₁₂

-116

dB/Hz

57

% (pk-pk)

Deterministic Jitter

DJ

20

1. The minimum and maximum values of the average received power in dBm give the input power range to maintain a BER < 10^-12

These values take into account power penalties caused by the use of a transmitter with a worst-case combination of transmitter

spectral, extinction ratio, and pulse shape characteristics.

.

2. Launched optical power is measured at the end of a 2 meter section of a 50/125 µm fiber (N.A.=0.20) for the IBM42M10SNYAA20

(short wavelength GLM) and a 9/125 mm fiber for the IBM42M10LNYAA10 (long wavelength GLM). The maximum and minimum of

the allowed range of average transmitter power coupled into the fiber are worst case values to account for manufacturing vari-

ances, drift due to temperature variations, and aging effects.

3. Extinction Ratio is the value of the ratio of the average optical power (in dB) in a logic level one to the average optical power in a

logic level zero measured under fully modulated conditions in the presence of worst case reflections.

4. RIN₁₂is the laser noise, integrated over a specified bandwidth, measured relative to average optical power with 12 dB return loss.

See ANSI Fibre Channel Specification Annex A.5 [1].

5. Eye opening is the portion of the bit time which is error free for a given bit error rate (BER). The Fibre Channel standard for BER is

<10^-12. The general laser transmitter pulse shape characteristics are specified in the form of a mask of the transmitter eye diagram.

These characteristics include rise time, fall time, pulse overshoot, pulse undershoot, and ringing, all of which should be controlled

to prevent excessive degradation of the receiver sensitivity. For the purpose of an assessment of the transmit signal, it is important

to consider not only the eye opening, but also the overshoot and undershoot limitations.

6. Deterministic Jitter is measured as the peak-to-peak timing variation of the 50% optical signal crossings when transmitting repeti-

tive K28.5 characters. It is defined in FC-PH, version 4.1, clause 3.1.84 as:

Timing distortions caused by normal circuit effects in the transmission system. Deterministic jitter is often subdivided into

duty cycle distortion (DCD) caused by propagation differences between the two transitions of a signal and data depen-

dent jitter (DDJ) caused by the interaction of the limited bandwidth of the transmission system components and the sym-

bol sequence.

7. This 9dB optical power budget is a result of the difference between the worst case transmitted launch power, the receiver sensitiv-

ity and a 2 dB optical path power penalty (as specified in the ANSI Fibre Channel specification):

(-9 dBm) - (-20 dBm + 2 dB) = 9 dB

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 17 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Optical Cable/Connector Requirements

Parameter

Symbol

Min.

2

Typical

Max.

Units

Notes

9/125 µm Cable and Connector Specifications (Single mode)

Length

L

m

10000

0.5

µ_c

dB/km

Attenuation @1300 nm

SC Optical Connector (Single Mode)

µ_con

σ_con

Nominal Attenuation

0.75

0.2

1

Attenuation Standard Deviation

Connects/Disconnects

250

550

3.0

cycles

50/125 µm Cable and Connector Specifications (Multimode)

Length

L

2

m

BW

µ_c

500

MHz-km

dB/km

Bandwidth @ 850 nm

Attenuation @ 850 nm

Numerical Aperture

N.A.

0.20

62.5/125 µm Cable Specifications (Multimode)

Length

2

300

3.0

m

BW

160

MHz-km

dB/km

Bandwidth @ 850 nm

Attenuation @ 850 nm

Numerical Aperture

N.A.

0.275

SC Optical Connector (Multimode)

µ_con

σ_con

Nominal Attenuation

0.3

0.2

0.5

dB

1

Attenuation Standard Deviation

Connects/Disconnects

250

cycles

1. The optical interface connector dimensionally conforms to the industry standard SC type connector documented in JIS-5973. A

dual keyed SC receptacle serves to align the optical transmission fiber mechanically to the GLM. See “Duplex SC Receptacle” on

page 22 for a drawing of the duplex SC receptacle that is part of the GLM.

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 18 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Thermal Characteristics

External Thermal Resistance (R_ext) (°C/W)

Air Speed (lfpm)

Notes

Ser/Des IC Module

161

268

25.9

20.9

1

375

Laser Driver/Post Amp IC Module

161

18.0

51.2

43.2

1

268

375

38.7

1. The case temperature can be calculated using the following equation:

CASE = T_ambient+ R_ext× ACF × Power

where ACF = Altitude Correction Factor (1 for Sea Level & 1.12 for 4200 ft.) and Power = power dissipated in the serializer or

deserializer IC module (calculated from table below).

V_CC= 4.75 V to 5.25 V

IC Module

Serializer/Des.

Typical

0.92W

0.65W

Max

1.32W

0.84W

Laser Driver/Post Amp

Reliability Projections

Parameter

Symbol

AFR

Min

Typical

Max.

Units

Notes

1

Average Failure Rate

0.0195

%/khr

1. AFR specified over 44 khours. To meet the specified AFR, the case temperatures of the serializer and deserializer IC modules

should not exceed 85°C. In addition, the case temperature of the laser should not exceed 50°C.

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 19 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Mechanical Description

Card Layout

77.5 Max

Mounting

Axis

A

43.1 Max

28.5 ± 0.5

7.5 Max

Pin A20

0.46 ± ± 0.05

37.5 Min

Optical

Axis

B

4.8

2.5 ± 0.05

Post

D

Receiver

Side

4 Rows X 20

Terminal Strip

Placement

Axis

Transmitter

Side

1.35 Min

30.5 Min

36.1 Max

Pin A01

0.46 ±± 0.05

(2X) 2 ± ± 0.025 Hole

Countersink 2.36 ±±

0.05 X 20° 5.9 Deep

Minimum For Thread

Forming Screw

C

2.5 ± ± 0.05

63.53

Post

Note: All dimensions are in millimeters.

The transmit and receive circuits are electrically isolated on opposite sides of a double sided surface mount

card. Two optical receptacles are at the end of the card. They are spaced 12.7 mm apart to accept a standard

duplex SC connector such as the one shown on page 22.

The optical receptacles on the end of the IBM42M10LNYAA10 (long wavelength GLM) do not contain the

Fibre Channel specified “single mode keying” features. Both singlemode and multimode SC duplex connec-

tors can be inserted.

The Host Card Footprint with essential keepout areas is shown on page 21.

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 20 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Host Card Footprint

Socket A01

Accommodates

A Pin Spec’d

0.46 ± 0.05

R 1.6 Typ

36.4 Min

30.2 Max

4.8

C

2.65 ± 0.08

No Electrical

Traces

D

Transmitter

Side

4 Rows X 20 Surface

Mount Or Pin-In-Hole

Socket Strip

Placement

Axis

Receiver

Side

(2X) 2.6 Min

37.2 Max

43.4 Min

7.5 Min

Optical

B

Axis

Socket A20

2.65 ± 0.08

Accommodates

A Pin Spec’d

0.46 ± 0.05

63.53

(2X) 64.27 Min

Mounting

Axis

A

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 21 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

System Board Thickness

These GLMs are optimized for use with a board that is between 0.053 inches (1.35 mm) and 0.073 inches

(1.85 mm) thick. Thicker boards can be used by:

• Routing out the area where the L-Clip latches into the board so that it does not exceed a thickness of

0.073 inches.

• Routing out a larger area than required by the L-Clips and using some other retention mechanism (e.g.

the screw holes on the optical end of the card).

Duplex SC Receptacle

13.7

Bracket opening shown with aperture divided between ports

Size to fit ferrule

(2 surfaces)

7.4

4.79

13.7

9

12.7

Receiver Side

4.79

7.4

Size to fit ferrule

Optical Plane

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 22 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

System Board Configurations

These GLMs are designed to be used in multiple configurations:

• Back-to-back: All necessary card features are offset to allow ease of installation on opposite sides of a

host card. This requires the use of female surface mount connectors on the system card.

• Close pitch side-to-side: Cards can be placed on a 36.8 mm pitch by sharing common holes for L-Clip

retention.

• Both: Back-to-back and close pitch side-to-side are completely compatible.

Mechanical Features

Positive Retention: The integrated L-Clips provide sufficient retention for most environments. Screw holes

are integrated into the retainer on the optical end of the product for use in environments with high vibration

content or where tail stock or other additional mounting hardware is not used to secure the SC connectors.

Integrated Extraction Tool: This tool provides a simple method to remove the GLM from the host card with-

out requiring access to the sides or back of the card. It also minimizes stress to both the GLM and the system

card during removal of the GLM.

Alignment Pins: These pins are integrated into the product. The center of the round pin is the GDT (Geomet-

rical Dimension and Tolerance, an industry standard mechanical drawing methodology) registration point.

These pins also provide stress relief for the 80-pin connector. This is especially important when the system

card uses a surface mount connector.

EMI Slot: There is a small (2 mm) vertical slot in the SC connector. This allows the system to cut the aperture

of SC connector in half. This is extremely important in applications where the SC connector extends outside

the system box. We strongly encourage designing the tail stock with a hole for each of the SC connectors

(i.e., have a small metal strip between the connectors).

Connector Availability

One source for the mating connectors is:

Samtec

810 Progress Blvd., PO Box 1147

New Albany, IN 47151-1147

(812) 944-6733

Samtec Part Numbers:

Pin-in-hole: FOLC-120-01-P-Q-LC

Surface-mount with Standard Clipping:

FOLC-120-02-P-Q-LC

Surface-mount with Reverse Clipping:

FOLC-120-02-P-Q-LCR

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 23 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

References

1. American National Standards Institute Inc. (ANSI), X3T11, Fibre Channel-Physical and Signaling Inter-

face (FC-PH). Copies of this document may be purchased from:

Global Engineering

15 Inverness Way East

Englewood, CO 80112-5704

Phone: (800) 854-7179 or (303) 792-2181

Fax: (303) 792-2192.

2. Fibre Channel Systems Initiative. (FCSI), Gigabaud Link Module Family FCSI-301-Revision1.0, Feb. 16,

1994. This document may be downloaded under anonymous ftp from: playground.sun.com. It is in the file

pub/incoming/fcsi-301-rev1.ps

3. A.X. Widmer and P.A. Franaszek, “A DC-Balanced, Partitioned-Block, 8B/10B Transmission Code,” IBM

Journal of Research and Development, vol. 27, no. 5, pp. 440-451, September 1983. This paper fully

defines the 8b/10b code. It is primarily a theoretical work pinned in coding theory.

4. A.X. Widmer, The ANSI Fibre Channel Transmission Code, IBM Research Report, RC 18855 (82405),

April, 23 1993. Copies may be requested from:

Publications

IBM Thomas J. Watson Research Center

Post Office Box 218

Yorktown Heights, New York 10598

Phone: (914) 945-1259

Fax: (914) 945-4144

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 24 of 26

IBM42M10SNYAA20

IBM42M10LNYAA10

1063 Mbps Gigabit Link Module - No OFC

Revision Log

Rev. Date

11/09/98

3/22/99

Contents of Modification

Initial release (00).

First revision (01). Corrected maximum wavelength to 10km. Corrected part numbers to end in -10 instead of -20.

Second revision (02). On page 3, added Laser Safety Compliance Requirements and corrected 780nm to 850nm

in Ordering Information table. Deleted notes 2 and 3 from Optical Cable/Connector Requirements on page 18.

11/10/99

Third revision (03).

Adjusted fault time on page 7.

Changed voltage from 5.5 to 5.25 for second Current entry in the Power Supply table on page 14.

Changed Resistance and V_CCvalues in the Thermal Characteristics table on page 19.

11/29/00

Changed abbreviations for megabits per second from Mb/s and Mbit/s to Mbps. Changed abbreviation for mega-

bytes per second from Mbytes/s to MBps. Used a blank space before every unit of measure. Changed capitaliza-

tion of 8B/10B to 8b/10b (to more clearly show that the “b” stands for “bit”), except in title of published article.

GLM1063N.03

November 29, 2000

Use is further subject to the provisions at the end of this document.

Page 25 of 26

â

Copyright and Disclaimer

International Business Machines Corporation 1999

Printed in the United States of America November 2000

The following are trademarks of International Business Machines Corporation in the United States, or other countries,

or both.

IBM

IBM Logo

Other company, product and service names may be trademarks or service marks of others.

All information contained in this document is subject to change without notice. The products described in this docu-

ment are NOT intended for use in implantation or other life support applications where malfunction may result in injury

or death to persons. The information contained in this document does not affect or change IBM product specifications

or warranties. Nothing in this document shall operate as an express or implied license or indemnity under the intellec-

tual property rights of IBM or third parties. All information contained in this document was obtained in specific environ-

ments, and is presented as an illustration. The results obtained in other operating environments may vary.

THE INFORMATION CONTAINED IN THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS. In no event will IBM

be liable for damages arising directly or indirectly from any use of the information contained in this document.

IBM Microelectronics Division

1580 Route 52, Bldg. 504

Hopewell Junction,

NY 12533-6351

The IBM home page can be found at

http://www.ibm.com

The IBM Microelectronics Division home page

can be found at http://www.chips.ibm.com

GLM1063N.03

November 29, 2000


型号：	IBM42M10SNYAA20
厂家：	IBM
描述：	Interface Circuit, 电信电信集成电路
文件：	总26页 (文件大小：259K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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