SIP5630_技术文档

SiP5630

Vishay Siliconix

New Product

9-Line SCSI Bus Terminators

D Pin Compatible with UCC5630 and UCC5670

FEATURES

D Auto Selection of S/E or LVD SCSI Termination

D Lead (Pb)-Free QSOP-36 Package

D 2.7-V to 5.25-V TERMPWR Range

D Meets SCSI-1, SCSI-2, SPI-2 (ULTRA-2), SPI-3

(ULTRA-160) and SPI-4 (ULTRA-320) Standards

D Differential Failsafe Bias

APPLICATIONS

D Disk Array (RAID)

D Storage Area Networks (SAN)

D Network Attached Storage (NAS)

D SCSI Cable

D Thermal Package

D On-Chip Thermal Shutdown Circuit

D Master/Slave Input

D Server and Workstation

D Industrial Computers

D Active Negation

D Hot Swap Compatible

D High-End Personal Computers

DESCRIPTION

The SiP5630 provides active bus termination suitable for all

SCSI bus operational modes from SCSI-1 through SPI-4

(Ultra 320). The termination includes impedance matching of

the SCSI bus to minimize signal reflections from the end of the

bus, as well as required SCSI bus biasing for either S/E (Single

Ended) or LVD (Low Voltage Differential) operation.

The SiP5630 senses the operational state of the SCSI bus via

the DIFFSENS bus signal, and automatically switches to S/E

or LVD operation as required. It cannot be used on an HPD

(High Power Differential) SCSI bus, and goes into high

impedance mode when the voltage on the DIFFSENS line

indicates HPD operation. The SiP5630 also presents high

impedance to the SCSI bus if the DISABLE pin is asserted, or

if TERMPWR is removed from the IC.

The SiP5630 has nine (9) output channels (T1-T9). Each

output channel provides termination for one SCSI data signal,

parity signal or control signal. Two SiP5630 ICs provide

complete termination for a narrow SCSI Bus; three ICs provide

complete termination for a wide SCSI bus.

The SiP5630 is available in a lead (Pb)-free QSOP-36

package for operation over the temperature range of 0 to

70_C.

FUNCTIONAL BLOCK DIAGRAM

HPD

35

LVD

34

S/E TERMPWR

33 36

Current Limited

Source/Sink

Regulator

1.3 V

20

19

DIFFS

Comparators

Enable

MSTR/SLV

V t 0.5 = S/E

21

MODE

0.7 t V t1.9 = LVD

V u 2.4 = HPD

5

4

T1N

T1P

Current Limited

Source/Sink

Regulator

SCSI

Terminator

Impedance

Circuits

10 mA

32

31

T9N

T9P

Mode Control And

Enable/Disable

Circuitry

17

DISABLE

See Functional Diagrams

(Page 6) for detailed descriptions

of SCSI Terminator Impedance

Circuits in LVD and S/E modes of

operation.

18

8

9

10 26 27 28

1

GND

Heat Sink GND Pins

REG

Document Number: 73007

S-41263—Rev. A, 05-Ju1-04

www.vishay.com

1

SiP5630

New Product

Vishay Siliconix

TYPICAL APPLICATION DIAGRAM

SCSI BUS

TERMPWR

SiP5630

T1N

T1P

TERMPWR

T1P

MSTR/SLV

DISABLE

LOW BYTE DATA (8) + PARITY

DISABLE

T9N

T9P

DIFFSENS

DIFFS

REG

GND

REG

GND

4.7 mF

50 kW

MODE

4.7 mF

SiP5630

T1N

T1P

T1N

T1P

TERMPWR

MSTR/SLV

DISABLE

TERMPWR

MSTR/SLV

DISABLE

CONTROL LINES (9)

T9N

T9P

T9N

T9P

DIFFS

MODE

DIFFS

MODE

REG

GND

REG

GND

4.7 mF

SiP5630

T1N

T1P

T1N

T1P

TERMPWR

MSTR/SLV

DISABLE

TERMPWR

MSTR/SLV

DISABLE

HIGH BYTE DATA (8) + PARITY

T9N

T9P

T9N

T9P

DIFFS

MODE

DIFFS

MODE

REG

GND

REG

GND

4.7 mF

GROUND

Document Number: 73007

S-41263—Rev. A, 05-Ju1-04

www.vishay.com

2

SiP5630

Vishay Siliconix

New Product

ABSOLUTE MAXIMUM RATINGS (ALL VOLTAGES REFERENCED TO GND = 0 V)

TERMPWR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 V

TXN, TXP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 to 6 V

MODE, DISABLE, M/S, STATUS . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 to 6 V

Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65 to 125 _C

Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 _C

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation

of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect device reliability.

RECOMMENDED OPERATING RANGE (ALL VOLTAGES REFERENCED TO GND = 0 V)

TERMPWR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7 V to 5.25 V

Operating Temperature Range (T

)

. . . . . . . . . . . . . . . . . . . . . . . . 0 to 70 _C

A)

SPECIFICATIONS

Test Conditions Unless Specified

Limits

TERMPWR = 2.7 to 5.25 V, DISABLE = 0 V

Parameter

Symbol

Min^a

Typ^bMax^a

Unit

T

= T = 0 to 70 _C

A

J

SCSI Channels (T1 to T9), LVD Operation

Differential Impedance

Common Mode Impedance

Differential Failsafe Bias

Common Mode Bias

Z

V

100

120

100

1.15

105

140

112

110

160

125

1.35

DIFF

W

Z

CM

MODE = 1.3 V

mV

V

DIFF

V

1.25

CM

SCSI Channels (T1 to T9), S/E Operation

Impedance

Z

100

2.5

108

2.7

116

3.0

W

S/E

MODE = 0 V

Bias Voltage

V

Channel Voltage = 0.2 V

Channel Voltage = 0.5 V

= 10 mA

TEST

−25.4

−22.4

−23

−20.5

Output Current

I

MODE = 0 V

MODE = 0 V, I

mA

S/E

GND Driver Impedance

Z

30

60

W

GS

SCSI Channels (T1 to T9), Termination Disabled

c

Channel Leakage

I

Channel Voltage = 0 to 5 V

Referenced to GND

−500

0

3

500

nA

pF

L

c, d

Channel Capacitance

C

T

SCSI Regulator, LVD Mode

e

Output Voltage

Source Current

Sink Current

REG

0.5 V v V

v 2.0 V

1.15

−800

200

1.25

−450

300

1.35

−250

800

V

(LVD)

CM

I

REG = 0 V

SO(LVD)

mA

I

REG = 4 V

SI(LVD)

SCSI Regulator, S/E Mode

f

Output Voltage

Source Current

Sink Current

REG

0.2 V v V

v 4.0 V

2.5

−800

200

2.7

−450

300

3.0

−250

800

V

(S/E)

CM

I

REG = 0 V

SO(S/E)

mA

I

REG = 4 V

SI(S/E)

DIFFSENS Regulator

Output Voltage

Source Current

Sink Current

V

−5 mA v I

v 50 mA

1.2

−15

50

1.3

−8

1.4

−5

V

DIFFS

I

V

= 0 V

mA

SO(DIFFS)

DIFFS

I

V

DIFFS

= 2.75 V

100

200

SI(DIFFS)

DISABLE Input

Input Threshold

V

0.8

−30

1.0

−10

0

1.2

−3

10

V

TH(DIS)

0 V v V

v 1.2 V

DISABLE

Input Current

I

mA

IN(DIS)

V

u 1.2 V

DISABLE

Document Number: 73007

S-41263—Rev. A, 05-Ju1-04

www.vishay.com

3

SiP5630

New Product

Vishay Siliconix

SPECIFICATIONS

Test Conditions Unless Specified

Limits

TERMPWR = 2.7 to 5.25 V, DISABLE = 0 V

Parameter

Symbol

Min^a

Typ^bMax^a

Unit

T

= T = 0 to 70 _C

A

J

MODE Input

S/E to LVD Threshold

LVD to HPD Threshold

Input Current

V

0.5

1.9

−1

0.6

2.1

0

0.7

2.4

1

TH(S/E)

V

TH(HPD)

I

0 Vv V

v 5.25 V

mA

IN(MODE)

MODE

MASTER/SLAVE Input

TERMPWR = 2.7 V

TERMPWR = 3.3 V

TERMPWR = 5.25 V

0.8

1

1.4

1.7

2.6

0

1.9

2.3

3.7

1

Input Threshold

V

I

V

TH(M/S)

1.5

−1

Input Current

0 Vv V

v TERMPWR

mA

IN(M/S)

M/S

STATUS Output Pins (LVD, S/E and HPD)

Source Current

Sink Current

I

TERMPWR = 2.7 V, V

= 2.4 V

−10

−5

SO(STAT)

mA

I

V

= 0.4 V

3

6

SI(STAT)

THERMAL Shutdown

d

Shutdown Temperature

T

Rising Temperature

160

10

OFF

HYS

_C

d

Hysteresis

TERMPWR Supply

LVD Mode

I

MODE = 1.3 V, Channels Unloaded

MODE = 0 V, Channels Unloaded

MODE = 3 V

20

10

30

20

DD(LVD)

S/E Mode

I

DD(S/E)

mA

HPD Mode

Disabled Mode

I

10

20

DD(HPD)

I

DISABLE = 3 V

500

1000

mA

DD(DIS)

Notes

a. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum is used in this data sheet.

b. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.

c. MODE = 3 V and/or DISABLE = 3 V and/or TERMPWR = 0 V.

d. Guaranteed by design, not subject to production test.

e.

f.

V

CM

V

CM

applied simultaneously to Line PLUS and Line MINUS pins of all SCSI channels T1-T9.

applied simultaneously to Line MINUS pins of all SCSI channels T1-T9.

Document Number: 73007

S-41263—Rev. A, 05-Ju1-04

www.vishay.com

4

SiP5630

Vishay Siliconix

New Product

PIN CONFIGURATION AND ORDERING INFORMATION

SiP5630 (QSOP-36)

ORDERING INFORMATION

REG

N/C

1

2

36 TERMPWR

35 HPD

Part Number

Temperature Range

Marking

N/C

3

34 LVD

SiP5630CG-T1—E3

0 to 70_C

SiP5630CG

T1P

4

33 S/E

T1N

5

32 T9N

T2P

6

31 T9P

T2N

7

30 T8N

H/S GND

8

29 T8P

9

28 H/S GND

27 H/S GND

10

T3P

T3N

11

12

26 H/S GND

25 T7N

T4P 13

T4N 14

T5P 15

T5N 16

DISABLE 17

GND 18

24 T7P

23 T6N

22 T6P

21 MODE

20 DIFFS

19 MSTR/SLV

Top View

PIN DESCRIPTION

Name

Function

1

REG

SCSI Regulator Output. Connect a 4.7-mF bypass capacitor from this pin to GND.

2, 3

N/C

No Connect.

Positive Terminator Channel Pins. Provide positive signal line termination in LVD operation, and are connected to

GND through low impedance in S/E operation. In HPD, DISABLE, or Power Off condition these pins present high

impedance to the SCSI Bus.

4, 6, 11, 13,15, 22,

24, 29, 31

TXP; X = 1...9

5, 7, 12, 14, 16, 23,

25, 30, 32

Negative Terminator Channel Pins. Provide negative signal line termination in LVD operation, and line termination for

S/E operation. In HPD, DISABLE, or Power Off condition these pins present high impedance to the SCSI Bus.

TXN; X = 1...9

H/S GND

8, 9, 10, 26, 27, 28

Heat Sink Ground. Should be connected to as large a grounded heat sink area on the PC board as is practical.

Chip Disable. There is a small (nominal 10 mA) pull up current on this pin. Pull this pin to GND to enable Bus

Termination. When this pin is left floating or pulled high all SCSI channel pins present high impedance to the SCSI

Bus, and the SCSI Regulator and DIFFSENS regulator are both disabled.

17

DISABLE

18

19

20

GND

MSTR/SLV

DIFFS

Electrical ground connection for the terminator IC. Connect to the ground lines of the SCSI Bus

Master/Slave. If this pin is tied to TERMPWR the output of the 1.3-V regulator for DIFFSENS is enabled. If this pin is

tied to GND the output of the 1.3-V regulator for DIFFSENS is inhibited.

DIFFSENS Regulator Output. Connect to the DIFFSENS line of the SCSI Bus to bias the mode selection function.

SCSI MODE Select Pin. Connect to the DIFFSENS line of the SCSI Bus to sense the present mode of operation on

the Bus. Decouple MODE from the DIFFSENS signal with a 50-kW/4.7mF low pass filter to meet SPI-3 mode change

requirements.

21

MODE

Status Output Pins. Respective pins are high when the terminator detects the corresponding mode of operation on

the SCSI Bus, and low otherwise.

33, 34, 35

36

S/E, LVD, HPD

TERMPWR

Power for the Terminator IC. Connect to the TERMPWR lines on the SCSI Bus and decouple with a 4.7-mF capacitor

to GND at the IC.

Document Number: 73007

S-41263—Rev. A, 05-Ju1-04

www.vishay.com

5

SiP5630

New Product

Vishay Siliconix

FUNCTIONAL BLOCK DIAGRAMꢀLVD OPERATION

HPD

35

LVD

34

S/E

33

Current Limited

Source/Sink

Regulator

1.3 V

20

19

DIFFS

Comparators

Enable

MSTR/SLV

V t 0.5 = S/E

21

MODE

0.7 t V t1.9 = LVD

V u 2.4 = HPD

1.07 mA

Current Limited

Source/Sink

Regulator

52.5 W

5

4

T1N

T1P

115 W

1.25 V

1.07 mA

10 mA

Mode Control And

Enable/Disable

Circuitry

17

DISABLE

52.5 W

32

31

115 W

T9N

T9P

1.07 mA

1

REG

FUNCTIONAL BLOCK DIAGRAMꢀS/E OPERATION

HPD

35

LVD

34

S/E

33

Current Limited

Source/Sink

Regulator

1.3 V

20

19

DIFFS

Comparators

Enable

MSTR/SLV

V t 0.5 = S/E

21

MODE

0.7 t V t1.9 = LVD

V u 2.4 = HPD

Current Limited

Source/Sink

Regulator

108 W

5

4

T1N

T1P

2.7 V

30 W

10 mA

Mode Control And

Enable/Disable

Circuitry

32

31

T9N

T9P

17

DISABLE

30 W

1

REG

Document Number: 73007

S-41263—Rev. A, 05-Ju1-04

www.vishay.com

6

SiP5630

Vishay Siliconix

New Product

LVD WAVEFORMS

160 Mbyte/sec data transfer. Top panel DB10 T- and T+ signals. Bottom panel DB9 T− and T+ signals. All bits except DB9

toggling at maximum data rate.

TEMPWR = 5.25 V

TEMPWR = 2.70 V

5 ns/div

S/E WAVEFORMS

40 Mbyte/sec data transfer. Top panel DB10 T- signals. Bottom panel DB9 T− signals.

TEMPWR = 5.25 V

TEMPWR = 2.70 V

50 ns/div

Document Number: 73007

S-41263—Rev. A, 05-Ju1-04

www.vishay.com

7

SiP5630

New Product

Vishay Siliconix

LVD TYPICAL CHARACTERISTICS

Differential Impedance vs. TERMPWR

Differential Impedance vs. Temperature

110

108

106

104

102

100

TERMPWR

0_C

5.25 V

3.5 V

2.7 V

108

106

104

102

100

25_C

70_C

2.5

3.0

3.5

4.0

4.5

5.0

5.5

0

10

20

30

40

50

60

70

Temperature (_C)

Differential Fail-Safe Bias vs. TERMPWR

Differential Fail-Safe Bias vs. Temperature

125

120

115

110

105

100

TERMPWR

0_C

5.25 V

3.5 V

2.7 V

120

115

110

105

100

25_C

70_C

2.5

3.0

3.5

4.0

4.5

5.0

5.5

0

10

20

30

40

50

60

70

TERMPWR (V)

Temperature (_C)

Common Mode Bias vs. TERMPWR

Common Mode Bias vs. Temperature

1.30

1.29

1.28

1.27

1.26

1.25

1.24

1.23

1.22

1.21

1.20

1.30

1.29

1.28

1.27

1.26

1.25

1.24

1.23

1.22

1.21

1.20

0_C

25_C

70_C

TERMPWR

5.25 V

3.5 V

2.7 V

2.5

3.0

3.5

4.0

4.5

5.0

5.5

0

10

20

30

40

50

60

70

TERMPWR (V)

Temperature (_C)

Document Number: 73007

S-41263—Rev. A, 05-Ju1-04

www.vishay.com

8

SiP5630

Vishay Siliconix

New Product

SE TYPICAL CHARACTERISTICS

Impedance vs. TERMPWR

Impedance vs. Temperature

116

114

112

110

108

106

104

102

100

TERMPWR

5.25 V

0_C

114

25_C

70_C

3.5 V

2.7 V

112

110

108

106

104

102

100

2.5

3.0

3.5

4.0

4.5

5.0

5.5

0

10

20

30

40

50

60

70

TERMPWR (V)

Temperature (_C)

Output Current @ 0.2 V vs. TERMPWR

Output Current @ 0.2 V vs. Temperature

−20.9

−21.4

−21.9

−22.4

−22.9

−23.4

−23.9

−24.4

−24.9

−25.4

−20.9

−21.4

−21.9

−22.4

−22.9

−23.4

−23.9

−24.4

−24.9

−25.4

TERMPWR

0_C

25_C

70_C

5.25 V

3.5 V

2.7 V

2.5

3.0

3.5

4.0

4.5

5.0

5.5

0

10

20

30

40

50

60

70

TERMPWR (V)

Temperature (_C)

Bias vs. TERMPWR

Bias vs. Temperature

3.0

2.9

2.8

2.7

2.6

2.5

3.0

2.9

2.8

2.7

2.6

2.5

TERMPWR

0_C

25_C

70_C

5.25 V

3.5 V

2.7 V

2.5

3.0

3.5

4.0

4.5

5.0

5.5

0

10

20

30

40

50

60

70

TERMPWR (V)

Temperature (_C)

Document Number: 73007

S-41263—Rev. A, 05-Ju1-04

www.vishay.com

9

SiP5630

New Product

Vishay Siliconix

DETAILED OPERATION

The SiP5630 is a multimode active terminator IC, which

detects the operating mode of the SCSI bus, and switches to

the appropriate termination configuration accordingly.

an external R/C low pass filter.

recommended component values for the filter to meet SPI-3

mode change requirements.

50 kW/4.7 mF are

Three SiP5630 terminators are required at each end of a wide

SCSI bus to terminate 27 lines (18 data, 9 control). In LVD

mode the SiP5630 provides 105-W differential impedance and

112-mV differential bias between each T−/T+ pair of terminator

lines. In S/E mode the SiP5630 provides 108W- impedance

and 2.7-V pull-up on each T− pin, and low impedance to

ground on each T+ pin. In HPD mode the SiP5630

disconnects from the bus and presents high impedance to all

T−/T+ lines.

Three status lines (S/E, LVD, and HPD) are provided by the

SiP5630. One and only one status line is asserted high when

its corresponding mode has been detected; the other two

status lines are driven low. The mode detection function

continues to work even when the SiP5630 is in disconnect

mode.

The DISABLE pin is used to connect/disconnect the SiP5630.

If it is pulled to GROUND the SiP5630 is in connect mode, and

operates as a terminator. If it is pulled to TERMPWR or left

open the device is in disconnect mode and presents high

impedance to the SCSI bus. In disconnect mode the

DIFFSENS regulator is disabled but the mode detection

circuitry continues to function and the status lines continue to

indicate which mode is detected.

Each SiP5630 IC has a 1.3-V DIFFSENS Regulator output that

can be used to drive the DIFFSENS line of a SCSI bus. Since

only one DIFFSENS regulator is required at each end of the

SCSI bus each SiP5630 includes a MASTER/SLAVE pin to

enable or disable its DIFFSENS regulator. The DIFFSENS

regulator attempts to drive the DIFFSENS control signal to

1.3 V, but is current limited so that S/E or HPD devices on the

SCSI bus can override the DIFFSENS regulator and put the

bus into S/E or HPD mode of operation.

The SiP5630 operates within SCSI specifications with the

TERMPWR voltage between 2.7 V and 5.25 V, which enables

it to operate in both 5-V and 3.3-V systems. The 2.7-V lower

limit guarantees correct performance in a 3.3-V system.

The MODE pin senses the operational state of the SCSI bus

by detecting the voltage on the DIFFSENS control line through

Document Number: 73007

S-41263—Rev. A, 05-Ju1-04

www.vishay.com

10


型号：	SIP5630
厂家：	VISHAY
描述：	9-Line SCSI Bus Terminators 9线SCSI总线终端
文件：	总10页 (文件大小：87K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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