Integrated
Circuit
Systems, Inc.
ICS9342
133MHz Clock Generator and Integrated Buffer for PowerPC™
Recommended Application:
Power PC System Clock
Pin Configuration
VDDREF
REF1
REF0
GNDREF
X1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
OUTSEL1*
VDDCPU
GNDCPU
CPU0
CPU1
CPU2
VDDCPU
GNDCPU
CPU3
CPU4
CPU5
VDDCPU
GNDCPU
CPU6
CPU7
CPU8
VDDCPU
GNDCPU
CPU9
CPU10
CPU11
Output Features:
•
•
•
•
•
12- CPUs @ 3.3V, up to 146MHz
1- PCIREF @ 3.3V, up to 73MHz
1 - OUT 3.3V, 64MHz
1 - OUT/2 3.3V, OUT/2MHz
2 - REF @ 3.3V, 14.318MHz
X2
*PD#
*CPU-STOP#
VDD
GND
*PCI_STOP#
*SS_EN#
VDDPCI
PCIREF
GNDPCI
*FS0
Features:
•
•
Up to 146MHz frequency support
Support power management: CPU, PCI stop and power
down mode.
*FS1
*FS2
VDDFP
•
•
•
•
Spread spectrum for EMI control (0 to -0.5%, ± 0.25%).
Uses external 14.318MHz crystal
FS pins for frequency select
GNDFP
*TEST#/OUT
*BOOST#/OUT_DIV2
*PDFP#
VDDA
VDDCPU
GNDCPU
OUTSEL0*
Support for industrial temperature range (-40C° to 85C°)
48-Pin 300mil SSOP
* Internal pull-up resistor of 120K to VDD
on indicated inputsꢀ
Key Specifications:
•
•
•
•
CPU Output Skew: <200ps
CPU - PCI Output Skew: <500ps
CPU Output Jitter: <150ps
PCI Output Jitter: <500ps
Functionality
Block Diagram
CPU
MHz
PCI
MHz
REF
MHz
PLL2
OUT
TEST
FS2
FS1 FS0
OUT/DIV2
/ 2
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
133.33
100.00
83.33
33.33
33.33
33.33
33.33
66.66
66.66
66.66
66.66
14.318
14.318
14.318
14.318
14.318
14.318
14.318
14.318
X1
X2
XTAL
OSC
REF (1:0)
2
PLL1
Spread
Spectrum
CPU
DIVDER
Stop
CPUCLK (11:0)
12
66.66
133.33
100.00
83.33
OUTSEL (1:0)
SS_EN#
PCI
DIVDER
Control
Logic
Stop
PCIREF
66.66
FS (2:0)
PD#
Config.
Reg.
PDFP#
TEST#
BOOST#
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
9342 Rev E 9/06/00
Third party brands and names are the property of their respective owners.
information being relied upon by the customer is current and accurate.