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Integrated Circuit Systems - Programmable Timing Control Hub for Next Gen P4 processor

Numéro de référence ICS952606
Description Programmable Timing Control Hub for Next Gen P4 processor
Fabricant Integrated Circuit Systems 
Logo Integrated Circuit Systems 





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ICS952606 fiche technique
Integrated
Circuit
Systems, Inc.
ICS952606
Programmable Timing Control Hub™ for Next Gen P4™ processor
Recommended Application:
CK409 48-pin part
Output Features:
• 2 - 0.7V current-mode differential CPU pairs
• 1 - 0.7V current-mode differential CPU pairs for ITP
• 1 - 0.7V current-mode differential SRC pair
• 9 - PCI (33MHz)
• 1 - USB, 48MHz
• 1 - DOT, 48MHz
• 2 - REF, 14.318MHz
• 3 - 3V66, 66.66MHz
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#
for power management.
• 1 - 3V66/VCH, 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
Pin Configuration
*FSA/REF0 1
*FSB/REF1 2
VDDREF 3
• +/- 300ppm frequency accuracy on CPU & SRC clocks
X1 4
X2 5
GND 6
Functionality
PCICLK_F0 7
PCICLK_F1 8
FS2 CPU SRC
B6b5 FS_A FS_B MHz MHz
0 0 100.00 100/200
0
0
1
1 200.00 100/200
0 133.33 100/200
1 1 166.66 100/200
0 0 200.00 100/200
1
0
1
1 400.00 100/200
0 266.66 100/200
1 1 333.33 100/200
3V66
MHz
66.66
66.66
66.66
66.66
66.66
66.66
66.66
66.66
PCI
MHz
33.33
33.33
33.33
33.33
33.33
33.33
33.33
33.33
REF
MHz
14.318
14.318
14.318
14.318
14.318
14.318
14.318
14.318
USB/
DOT
MHz
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
PCICLK_F2 9
VDDPCI 10
GND 11
PCICLK0 12
PCICLK1 13
PCICLK2 14
PCICLK3 15
VDDPCI 16
GND 17
PCICLK4 18
PCICLK5 19
PD# 20
48MHz_DOT 21
48MHz_USB 22
GND 23
VDD48 24
48 VDDA
47 GND
46 IREF
45 CPUCLKT_ITP
44 CPUCLKC_ITP
43 GND
42 CPUCLKT1
41 CPUCLKC1
40 VDDCPU
39 CPUCLKT0
38 CPUCLKC0
37 GND
36 SRCCLKT
35 SRCCLKC
34 VDD
33 Vtt_Pwrgd#
32 SDATA
31 SCLK
30 3V66_0
29 3V66_1
28 GND
27 VDD3V66
26 3V66_2
25 3V66_3/VCH
**120KW pull-down
48-pin SSOP
0717F—06/10/05

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