ICS9169AM-70 [ICSI]
Frequency Generator for Workstation Systems; 频率发生器的工作站系统
| 型号： | ICS9169AM-70 |
| 厂家： | 
INTEGRATED CIRCUIT SOLUTION INC |
| 描述： | Frequency Generator for Workstation Systems |
| 文件： | 总7页 (文件大小：199K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Integrated
Circuit
Systems, Inc.
ICS9169A-70
Frequency Generator for Workstation Systems
General Description
Features
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9 PCI outputs selectable from 30 to 66.6MHz
3 SCSI outputs, selectable from 10 to 80MHz
TheICS9169A-70 isalow-costfrequencygeneratordesigned
specifically for workstation or PC system clocks. The
integrated buffer minimizes skew and provides all the clocks
required. A 14.318 MHz XTAL oscillator provides the
reference clock to generate standard Pentium frequencies.
The CPU clock makes gradual frequency transitions without
violating the PLL timing of internal microprocessor clock
multipliers.
500ps skew window for all synchronous clock edges
Integrated buffer outputs drive up to 30pF loads
500ps output to output skew window
Buffers drive 30pF loads nominally 0.8V/ns skew rate
3.0V-3.7Vsupplyrange
32-pinSOICpackage
48 MHz clock for USB support and 24 MHz clock
for FD
Pin Configuration
Block Diagram
32-Pin SOIC
9169A-70RevB2/14/01
ICS reserves the right to make changes in the device data identified in this
publication without further notice. ICS advises its customers to obtain the latest
version of all device data to verify that any information being relied upon by the
customer is current and accurate.
ICS9169A-70
Pin Descriptions
PIN NUMBER
PIN NAME
TYPE
DESCRIPTION
1
VDD1
PWR
Power for logic, PLL and output buffers.
XTAL or external reference frequency input. This
input includes XTAL load capacitance and feedback
bias for a 12-16 MHz crystal, nominally 14.31818
Mhz.
2
3
X1
X2
IN
XTAL output which includes XTAL load
capacitance.
OUT
5,6,9,10,13,14,20,23,24 PCI(0:8)
OUT
PWR
PWR
PCI clock outputs
4,7,11,19,22,25
8,12,21
GND
Ground for logic, PLL and output buffers.
Power for PCI clock outputs
VDD3
Frequency multiplier select pins. See table above.
These inputs have internal pull up devices.
15,16,17
FS(0:2)A
IN
29
VDD2
PWR
OUT
Power for SCSI clock outputs
SCSI clock outputs
28,27,26
SCSI (0:2)
Frequency multiplier select pins. See table next
page. These inputs have internal pull up devices
31,30,18
32
FS(0:2)B
REF0
IN
REF is a buffered copy of the crystal oscillator or
reference input clock, nominally 14.31818 MHz.
OUT
Note:
X1, X2 contain iternal 18pF crystal load cap. Intended to have external load
caps of 15 to 18pF required for nominal crystal of 17 to 18pF crystal total load.
2
ICS9169A-70
VDD = 3.3 10ꢀ, TA = 0 to 70°C
Crystal = 14.31818MHz
SCSI outputs: SCSI(0:2)
(Assume divide by 2 from VCO)
Target Actual
REF
MHz
FS2B
FS1B
FS0B
MHz
MHz
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
24
48
10
20
40
50
60
80
24
14.318
48.07
10.02
20.05
40.09
50.11
60.14
80.18
14.318
14.318
14.318
14.318
14.318
14.318
14.318
PCI outputs: PCI (0:8)
(Assume divide by 2 from VCO)
Target Actual
MHz MHz
REF
MHz
FS2A
FS1A
FS0A
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Tristate Tristate Tristate
REF/2
30
REF/2
30.07
33.27
50.11
54.89
60.14
66.63
REF
14.318
14.318
14.318
14.318
14.318
14.318
33.3
50
55
60
66.6
Note: When FS(0:2)A is 000 or 001, the Tristate and
Test modes applies to all outputs for REF, PCI, and
SCSI outputs.
REF
FS2A
FS1A
FS0A
PCI
SCSI
0
0
0
0
0
1
Tristate Tristate Tristate
REF/21 REF/21 REF1
Note:1. InTestmode, eachPLLisbypassed.Theclock
signal at X1 (externally driven clock or the
crystal) is applied to the divider circuits.
3
ICS9169A-70
Absolute Maximum Ratings
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0 V
Logic Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND –0.5 V to VDD +0.5 V
Ambient Operating Temperature . . . . . . . . . . . . 0°C to +70°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are
stress specifications only and functional operation of the device at these or any other conditions above those listed in the
operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended
periods may affect product reliability.
Electrical Characteristics - Input/Supply/Common Output Parameters
TA = 0 - 70C; Supply Voltage VDD = 3.3 V +/-10% (unless otherwise stated)
PARAMETER
Input High Voltage
Input Low Voltage
Input High Current
Input Low Current
Supply Current
SYMBOL
VIH
CONDITIONS
MIN
2.0
-
TYP
-
MAX UNITS
-
0.9
5
V
V
VIL
-
IIH1
VIN = VDD
VIN = 0 V
-5
0.2
mA
mA
mA
MHz
IIL1
-20
-50.0
50
-
IDD
CL = 0 pF; Select @ 66M
VDD = 3.3 V;
110
Input frequency
Fi
14.318
Input Capacitance1
CIN
Logic Inputs
5
pF
pF
CINX
X1 & X2 pins
27.0
36.0
0.136
63.0
1.7
45.0
Transition Time1
Settling Time1
Clock Overshoot1
Clk Stabilization1
Ttrans
Ts
To 1st crossing of target Freq.
2.0
600
4.0
3
mS
µS
From 1st crossing to 1% target Freq.
Tsh
MHz
mS
TSTAB
From VDD = 3.3 V to 1% target Freq.
1Guarenteed by design, not 100% tested in production.
Electrical Characteristics - REF
TA = 0 - 70C; VDD = VDDL = 3.3 V +/-10%; CL = 20 pF (unless otherwise stated)
PARAMETER
Output High Voltage
Output Low Voltage
Output High Current
Output Low Current
Rise Time
SYMBOL
VOH1
CONDITIONS
MIN
2.4
TYP MAX UNITS
IOH = -14 mA
IOL = 11 mA
VOH = 2.0 V
VOL = 0.8 V
2.9
0.3
-43.0
31.0
0.7
0.6
53
V
V
VOL1
0.4
IOH1
23.0
mA
mA
nS
nS
%
IOL1
20.0
1
tr5
VOL = 0.8 V, VOH = 2.4 V
VOH = 2.4 V, VOL = 0.8 V
VT = 1.5 V
1.5
1.5
60
1
Fall Time
tf5
1
Duty Cycle
dt5
40
-
1
Jitter
tj1s5
VT = 1.5 V
182
-
400
700
pS
pS
1
tjabs5
VT = 1.5 V
-700
1Guarenteed by design, not 100% tested in production.
4
ICS9169A-70
Electrical Characteristics - SCSI
TA = 0 - 70C; VDD = VDDL = 3.3 V +/-10%; CL = 20 pF (unless otherwise stated)
PARAMETER
SYMBOL
VOH1
CONDITIONS
MIN
2.4
TYP
MAX UNITS
V
Output High Voltage
Output Low Voltage
Output High Current
Output Low Current
IOH = -14 mA
IOL = 11 mA
VOH = 2.0 V
VOL = 0.8 V
2.9
0.3
VOL1
0.4
V
IOH1
-43.0
31.0
23.0
mA
mA
IOL1
20.0
1
Rise Time
Fall Time
tr5
VOL = 0.8 V, VOH = 2.4 V
0.7
0.6
50
-
1.5
1.5
nS
nS
%
1
tf5
VOH = 2.4 V, VOL = 0.8 V
1
Duty Cycle
Skew (window)
Jitter
dt5
VT = 1.5 V
45
-250
-
55
1
tsk1
VT = 1.4 V
250
300
150
700
400
pS
pS
pS
1
tj1s5
VT = 1.5 V; Rs= 33; (10 to 24 MHz Clocks)
VT = 1.5 V; Rs= 33; (40 to 80 MHz Clocks)
VT = 1.5 V; Rs= 33; (10 to 24 MHz Clocks)
VT = 1.5 V; Rs= 33; (40 to 80 MHz Clocks)
200
90
-
1
tj1s5
-
1
tjabs5
-700
-400
1
tjabs5
-
pS
1Guarenteed by design, not 100% tested in production.
Electrical Characteristics - PCI
TA = 0 - 70C; VDD = 3.3 V +/-10%; CL = 30 pF (unless otherwise stated)
PARAMETER
SYMBOL
VOH1
CONDITIONS
MIN
2.4
TYP
2.9
MAX UNITS
V
Output High Voltage
Output Low Voltage
Output High Current
Output Low Current
IOH = -14 mA
IOL = 11 mA
VOH = 2.0 V
VOL = 0.8 V
VOL1
0.3
0.4
V
IOH1
-43.0
31.0
23.0
mA
mA
IOL1
20.0
1
Rise Time
Fall Time
tr1
VOL = 0.8 V, VOH = 2.4 V
VOH = 2.4 V, VOL = 0.8 V
VT = 1.4 V
0.8
0.9
1.5
1.5
nS
nS
%
1
tf1
1
Duty Cycle
Skew (window)
Jitter
dt1
45.0
-250
51.0
55.0
250
150
300
1
tsk1
VT = 1.4 V
pS
pS
pS
1
tj1s1
VT = 1.5 V; Rs= 33
VT = 1.5 V; Rs= 33
88
1
tjabs1
-300
1Guarenteed by design, not 100% tested in production.
5
ICS9169A-70
GeneralLayoutPrecautions:
1) Use a ground plane on the top layer
of the PCB in all areas not used by
traces.
2) Make all power traces and vias as
wide as possible to lower inductance.
Notes:
1 All clock outputs should have series
terminating resistor. Not shown in all
places to improve readibility of
diagram
2 Optional EMI capacitor should be
used on all CPU, SDRAM, and PCI
outputs.
3 Optional crystal load capacitors are
recommended.
CapacitorValues:
C1, C2 : Crystal load values determined by user
All unmarked capacitors are 0.01µF ceramic
6
ICS9169A-70
LEAD COUNT
DIMENSONL
32L
.804
SOIC Package
Ordering Information
ICS9169AM-70
Example:
ICS XXXX M - PPP
Pattern Number (2 or 3 digit number for parts with ROM code patterns)
Package Type
M=SOIC
Device Type (consists of 3 or 4 digit numbers)
Prefix
ICS, AV = Standard Device
ICS reserves the right to make changes in the device data identified in this
publication without further notice. ICS advises its customers to obtain the latest
version of all device data to verify that any information being relied upon by the
customer is current and accurate.
7
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