Integrated
Circuit
Systems, Inc.
ICS932S208
Programmable Timing Control Hub™ for Next Gen P4™ processor
Recommended Application:
CK409B clock, Intel Yellow Cover part, Server Applications
Output Features:
•
4 - 0.7V current-mode differential CPU pairs
•
1 - 0.7V current-mode differential SRC pair
•
7 - PCI (33MHz)
•
3 - PCICLK_F, (33MHz) free-running
•
1 - USB, 48MHz
•
1 - DOT, 48MHz
•
2 - REF, 14.318MHz
•
4 - 3V66, 66.66MHz
•
1 - VCH/3V66, selectable 48MHz or 66MHz
Key Specifications:
•
CPU/SRC outputs cycle-cycle jitter < 125ps
•
3V66 outputs cycle-cycle jitter < 250ps
•
PCI outputs cycle-cycle jitter < 250ps
•
CPU outputs skew: < 100ps
•
+/- 300ppm frequency accuracy on CPU & SRC clocks
Features/Benefits:
•
Supports tight ppm accuracy clocks for Serial-ATA
•
Supports spread spectrum modulation, 0 to -0.5%
down spread and +/- 0.25% center spread
•
•
Supports CPU clks up to 400MHz in test mode
Uses external 14.318MHz crystal
Pin Configuration
Functionality
CPU
B6b5 FS_A FS_B MHz
0
0
100
0
MID Ref/N
0
0
1
200
0
1
0
133
1
1
166
1
MID Hi-Z
0
0
200
0
1
400
1
1
0
266
1
1
333
SRC
MHz
100/200
Ref/N
1
100/200
100/200
100/200
Hi-Z
100/200
100/200
100/200
100/200
3V66
MHz
66.66
Ref/N
2
66.66
66.66
66.66
Hi-Z
66.66
66.66
66.66
66.66
PCI
MHz
33.33
Ref/N
3
33.33
33.33
33.33
Hi-Z
33.33
33.33
33.33
33.33
REF U
SB/DOT
MHz
MHz
14.318
48.00
Ref/N
4
Ref/N
5
14.318
48.00
14.318
48.00
14.318
48.00
Hi-Z
Hi-Z
14.318
48.00
14.318
48.00
14.318
48.00
14.318
48.00
REF0
REF1
VDDREF
X1
X2
GND
PCICLK_F0
PCICLK_F1
PCICLK_F2
VDDPCI
GND
PCICLK0
PCICLK1
PCICLK2
PCICLK3
VDDPCI
GND
PCICLK4
PCICLK5
PCICLK6
PD#
3V66_0
3V66_1
VDD3V66
GND
3V66_2
3V66_3
SCLK
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
FS_B
VDDA
GNDA
GND
IREF
FS_A
CPUCLKT3
CPUCLKC3
VDDCPU
CPUCLKT2
CPUCLKC2
GND
CPUCLKT1
CPUCLKC1
VDDCPU
CPUCLKT0
CPUCLKC0
GND
SRCCLKT
SRCCLKC
VDD
Vtt_PWRGD#
VDD48
GND
48MHz_DOT
48MHz_USB
SDATA
3V66_4/VCH
56-pin SSOP & TSSOP
0743D—07/07/04
ICS932S208
ICS [ INTEGRATED CIRCUIT SYSTEMS ]
