ICS952623 Datasheet, PDF (1/27 Pages) Integrated Circuit Systems – Programmable Timing Control Hub for Next Gen P4 processor

Integrated
Circuit
Systems, Inc.
ICS952623
Advance Information
Programmable Timing Control Hub™ for Next Gen P4™ processor
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
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
• Supports undriven differential CPU, SRC pair in PD#
and CPU_STOP# for power management.
Key Specifications:
Pin Configuration
• 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
REF0 1
REF1 2
VDDREF 3
X1 4
X2 5
GND 6
Functionality
PCICLK_F0 7
PCICLK_F1 8
CPU SRC 3V66 PCI REF USB/DOT
B6b5 FS_A FS_B MHz MHz MHz MHz MHz MHz
0 0 100 100/200 66.66 33.33 14.318 48.00
0 MID Ref/N₀ Ref/N₁ Ref/N₂ Ref/N₃ Ref/N₄ Ref/N₅
0
0
1
1 200 100/200 66.66 33.33 14.318 48.00
0 133 100/200 66.66 33.33 14.318 48.00
PCICLK_F2 9
VDDPCI 10
GND 11
PCICLK0 12
PCICLK1 13
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
1
0
1
1 400 100/200 66.66 33.33 14.318 48.00
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
PCICLK2 14
PCICLK3 15
VDDPCI 16
GND 17
PCICLK4 18
PCICLK5 19
PCICLK6 20
PD# 21
3V66_0 22
3V66_1 23
VDD3V66 24
GND 25
3V66_2 26
3V66_3 27
SCLK 28
56 FS_B
55 VDDA
54 GNDA
53 GND
52 IREF
51 FS_A
50 CPU_STOP#
49 PCI_STOP#
48 VDDCPU
47 CPUCLKT2
46 CPUCLKC2
45 GND
44 CPUCLKT1
43 CPUCLKC1
42 VDDCPU
41 CPUCLKT0
40 CPUCLKC0
39 GND
38 SRCCLKT
37 SRCCLKC
36 VDD
35 Vtt_PWRGD#
34 VDD48
33 GND
32 48MHz_DOT
31 48MHz_USB
30 SDATA
29 3V66_4/VCH
56-pin SSOP & TSSOP
0758—02/08/05
ADVANCE INFORMATION documents contain information on products in the formative or design phase development. Characteristic data and other specifications are design goals.
ICS reserves the right to change or discontinue these products without notice. Third party brands and names are the property of their respective owners.