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ICS952623 Datasheet Preview

ICS952623 Datasheet

Programmable Timing Control Hub

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ICS952623 pdf
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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
REF1
VDDREF
X1
X2
1
2
3
4
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
00
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
10
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.



ICS
ICS

ICS952623 Datasheet Preview

ICS952623 Datasheet

Programmable Timing Control Hub

No Preview Available !

ICS952623 pdf
www.DataSheet4U.com
Integrated
Circuit
Systems, Inc.
ICS952623
Advance Information
Pin Description
PIN
#
PIN NAME
1 REF0
2 REF1
3 VDDREF
4 X1
5 X2
6 GND
7 PCICLK_F0
8 PCICLK_F1
9 PCICLK_F2
10 VDDPCI
11 GND
12 PCICLK0
13 PCICLK1
14 PCICLK2
15 PCICLK3
16 VDDPCI
17 GND
18 PCICLK4
19 PCICLK5
20 PCICLK6
21 PD#
22 3V66_0
23 3V66_1
24 VDD3V66
25 GND
26 3V66_2
27 3V66_3
28 SCLK
PIN TYPE
DESCRIPTION
OUT
OUT
PWR
IN
OUT
PWR
OUT
OUT
OUT
PWR
PWR
OUT
OUT
OUT
OUT
PWR
PWR
OUT
OUT
OUT
14.318 MHz reference clock.
14.318 MHz reference clock.
Ref, XTAL power supply, nominal 3.3V
Crystal input, Nominally 14.318MHz.
Crystal output, Nominally 14.318MHz
Ground pin.
Free running PCI clock not affected by PCI_STOP# .
Free running PCI clock not affected by PCI_STOP# .
Free running PCI clock not affected by PCI_STOP# .
Power supply for PCI clocks, nominal 3.3V
Ground pin.
PCI clock output.
PCI clock output.
PCI clock output.
PCI clock output.
Power supply for PCI clocks, nominal 3.3V
Ground pin.
PCI clock output.
PCI clock output.
PCI clock output.
Asynchronous active low input pin used to power down the device
IN
into a low power state. The internal clocks are disabled and the
VCO and the crystal are stopped. The latency of the power down
will not be greater than 1.8ms. Internal pull-up of 150K nominal.
OUT
OUT
PWR
PWR
OUT
OUT
IN
3.3V 66.66MHz clock output
3.3V 66.66MHz clock output
Power pin for the 3V66 clocks.
Ground pin.
3.3V 66.66MHz clock output
3.3V 66.66MHz clock output
Clock pin of I2C circuitry 5V tolerant
0758—02/08/05
2


Part Number ICS952623
Description Programmable Timing Control Hub
Maker ICS
Total Page 27 Pages
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