ICS932S825 Datasheet, PDF (2/20 Pages) Integrated Circuit Systems – Low Power Clock Chip for Serverworks HT2400 Servers

ICS932S825
Pin Description
PIN #
PIN NAME
1 X1
2 X2
3 VDDREF_STB
4 REF0_RUN_2x
5 FS1/REF1_2x
6 FS2/REF2_2x
7 GNDREF
8 VDD48
9 48MHz_0_2x
10 48MHz_1_2x
11 GND48
12 SCLK
13 SDATA
14 VDDPCI
15 PCICLK0_2x
16 PCICLK1_2x
17 GNDPCI
18 CLKPWRGD/PD#
19 GND
20 VDDA
21 GNDA
22 GND
23 PCIeT_L0
24 PCIeC_L0
25 PCIeT_L1
26 PCIeC_L1
27 GND
28 VDDPCIe
29 PCIeT_L2
30 PCIeC_L2
31 PCIeT_L3
32 PCIeC_L3
1276D—10/25/07
TYPE
IN
OUT
PWR
OUT
I/O
I/O
PWR
PWR
OUT
OUT
PWR
IN
I/O
PWR
OUT
OUT
PWR
IN
PWR
PWR
PWR
PWR
OUT
OUT
OUT
OUT
PWR
PWR
OUT
OUT
OUT
OUT
DESCRIPTION
Crystal input, Nominally 14.318MHz.
Crystal output, Nominally 14.318MHz
Ref, XTAL power supply, nominal 3.3V standby power
14.318MHz Free Running XTAL Output. This output runs as long as
standby VDD is applied to the part. Default drive is 2 loads.
Frequency select latch input pin / 14.318 MHz reference clock. Default 2
load drive.
Frequency select latch input pin / 14.318 MHz reference clock. Default 2
load drive.
Ground pin for the REF outputs.
Power pin for the 48MHz output.3.3V
48MHz clock output. Default 2 load drive strength
48MHz clock output. Default 2 load drive strength
Ground pin for the 48MHz outputs
Clock pin of SMBus circuitry, 5V tolerant.
Data pin for SMBus circuitry, 3.3V tolerant.
Power supply for PCI clocks, nominal 3.3V
3.3V PCI clock output. Default 2 load drive strength.
3.3V PCI clock output. Default 2 load drive strength.
Ground pin for the PCI outputs
This 3.3V LVTTL input is a level sensitive strobe used to determine when
latch inputs are valid and are ready to be sampled. This is an active high
input. / Asynchronous active low input pin used to power down the device
into a low power state.
Ground pin.
3.3V power for the PLL core.
Ground pin for the PLL core.
Ground pin.
True clock of 0.8V differential push-pull PCI_Express pair (no 50ohm
resistor to GND needed)
Complement clock of 0.8V differential push-pull PCI_Express pair. (no
50ohm resistor to GND needed)
True clock of 0.8V differential push-pull PCI_Express pair (no 50ohm
resistor to GND needed)
Complement clock of 0.8V differential push-pull PCI_Express pair. (no
50ohm resistor to GND needed)
Ground pin.
Power supply for PCI Express clocks, nominal 3.3V
True clock of 0.8V differential push-pull PCI_Express pair (no 50ohm
resistor to GND needed)
Complement clock of 0.8V differential push-pull PCI_Express pair. (no
50ohm resistor to GND needed)
True clock of 0.8V differential push-pull PCI_Express pair (no 50ohm
resistor to GND needed)
Complement clock of 0.8V differential push-pull PCI_Express pair. (no
50ohm resistor to GND needed)
2