ICS952606 Datasheet, PDF (2/20 Pages) Integrated Circuit Systems – Programmable Timing Control Hub for Next Gen P4 processor

Integrated
Circuit
Systems, Inc.
Pin Description
PIN #
PIN NAME
1 *FSA/REF0
2 *FSB/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 PD#
21 48MHz_DOT
22 48MHz_USB
23 GND
24 VDD48
ICS952606
PIN TYPE
DESCRIPTION
I/O
I/O
PWR
IN
OUT
PWR
OUT
OUT
OUT
PWR
PWR
OUT
OUT
OUT
OUT
PWR
PWR
OUT
OUT
IN
OUT
OUT
PWR
PWR
Frequency select latch input pin / 14.318 MHz reference clock.
Frequency select latch input pin / 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.
Asynchronous active low input pin, with 120Kohm internal pull-up
resistor, used to power down the device. The internal clocks are
disabled and the VCO and the crystal are stopped.
48MHz clock output.
48MHz clock output.
Ground pin.
Power pin for the 48MHz output.3.3V
0717F—06/10/05
2