ICS952601
IDT
TM
Progammable Timing Control Hub
TM
for Next Gen P4
TM
Processor 701J—01/25/10
Programmable Timing Control Hub
TM
for Next
Gen P4
TM
Processor
1
DATASHEET
Pin Configuration
Recommended Application:
CK409 clock, Intel Yellow Cover part
Output Features:
• 3 - 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.
• Supports CPU clks up to 400MHz in test mode.
• Uses external 14.318MHz crystal, external crystal load
caps are required for frequency tuning.
• Supports undriven differential CPU, SRC pair in PD#
and CPU_STOP# for power management.
56-pin SSOP & TSSOP
REF0 1 56 FS_B
REF1 2 55 VDDA
VDDREF 3 54 GNDA
X1 4 53 GND
X2 5 52 IREF
GND 6 51 FS_A
PCICLK_F0
7 50 CPU_STOP#
PCICLK_F1
849PCI_STOP#
PCICLK_F2
948
VDDCPU
VDDPCI
10 47 CPUCLKT2
GND
11 46 CPUCLKC2
PCICLK0
12 45
GND
PCICLK1
13 44 CPUCLKT1
PCICLK2
14 43 CPUCLKC1
PCICLK3
15 42
VDDCPU
VDDPCI
16 41 CPUCLKT0
GND
17 40 CPUCLKC0
PCICLK4
18 39 GND
PCICLK5
19 38
SRCCLKT
PCICLK6
20 37
SRCCLKC
PD# 21 36 VDD
3V66_0
22 35 Vtt_PWRGD#
3V66_1
23 34
VDD48
VDD3V66
24 33 GND
GND
25 32
48MHz_DOT
3V66_2
26 31
48MHz_USB
3V66_3
27 30
SDATA
SCLK
28 29
3V66_4/VCH
ICS952601
Functionality
B6b5 FS_A FS_B
CPU
MHz
SRC
MHz
3V66
MHz
PCI
MHz
REF
MHz
U
SB/DOT
MHz
0 0 100 100/200 66.66 33.33 14.318 48.00
0MIDRef/N
0
Ref/N
1
Ref/N
2
Ref/N
3
Ref/N
4
Ref/N
5
0 1 200 100/200 66.66 33.33 14.318 48.00
1 0 133 100/200 66.66 33.33 14.318 48.00
1 1 166 100/200 66.66 33.33 14.318 48.00
1 MID Hi-Z Hi-Z Hi-Z Hi-Z Hi-Z Hi-Z
0 0 200 100/200 66.66 33.33 14.318 48.00
0 1 400 100/200 66.66 33.33 14.318 48.00
1 0 266 100/200 66.66 33.33 14.318 48.00
1 1 333 100/200 66.66 33.33 14.318 48.00
0
1
