ICS9178-03 Datasheet, PDF (7/8 Pages) Integrated Circuit Systems – 245 MHz Clock Generator and Integrated Buffer for PowerPC

Applications
PwrPC 601/601+Processor Modules
ICS9178-03
Frequency Combinations
(XCLK pairs selectable)
SYS 9178
BUS MODE
F
x4
F
x6
F
8F
2XPCLK
(2XCPU)
4F
6F
8F
PCLK(0,1)
(CPU)
2F
3F
4F
XCLK(0,5)
(BUS)
2F, 1F
3F, 1.5F, 1F
4F, 2F, 1F
BCLK(0,1)
ABCLK
1F
1.5F
2F
PwrPC 601\601+ System Clock Diagram
Frequency Combinations
(selectable SCLK)
OSC
9178
MODE
F
x4
F
x6
F
8F
33
x4
33
x6
33
x8
30
x4
30
x6
30
x8
25
x4
25
x6
25
x8
2XPCLK
(2XCPU)
4F
6F
8F
132
196
264
120
180
240
100
150
200
PCLK
(CPU)
2F
3F
4F
66
99
132
60
90
120
50
75
100
XCLK
(BUS)
2F, 1F
3F, 1.5F, 1F
4F, 2F, 1F
66, 33
99, 48, 33
132, 66, 33
60, 30
90, 45, 30
120, 60, 30
50, 25
75, 37, 25
100, 50, 25
Q (PCI)
1F
1.5F
2F
33
33
33
30
30
30
25
25
25
PwrPC 603/604 System Clock Diagram
Frequency Combinations
(9178 x4 mode)
OSC
PwrPC
MODE
F
-
33 x1, x2
40 x1, x2
33
x3
30 x2, x4
40
x3
33 x2, x4
PCLK,
DCLK
(CPU)
2F, 1F
66, 33
80, 40
-, 33
60, 30
-, 40
66, 33
PwrPC
INTERNAL
CLOCK
-
66
80
100
120
120
132
PCLK(0,1)
XCLK(0,3)
(BUS)
2F, 1F
66, 33
80, 40
66, 33
60, 30
80, 40
66, 33
ABCLK,
BCLK(0,1)
XCLK(4,5)
F
33 PCI)
40 (VL)
33 (PCI)
30 (PCI)
40 (VL)
33 (PCI)
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