ICS932S825
Pin Description
PIN #
PIN NAME
TYPE
IN
DESCRIPTION
Crystal input, Nominally 14.318MHz.
1
2
3
X1
X2
OUT
PWR
Crystal output, Nominally 14.318MHz
VDDREF_STB
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.
4
5
6
REF0_RUN_2x
FS1/REF1_2x
FS2/REF2_2x
OUT
I/O
Frequency select latch input pin / 14.318 MHz reference clock. Default 2
load drive.
I/O
7
GNDREF
VDD48
PWR
PWR
OUT
OUT
PWR
IN
Ground pin for the REF outputs.
8
Power pin for the 48MHz output.3.3V
9
48MHz_0_2x
48MHz_1_2x
GND48
48MHz clock output. Default 2 load drive strength
48MHz clock output. Default 2 load drive strength
Ground pin for the 48MHz outputs
10
11
12
13
14
15
16
17
SCLK
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.
SDATA
I/O
VDDPCI
PWR
OUT
OUT
PWR
PCICLK0_2x
PCICLK1_2x
GNDPCI
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.
18
CLKPWRGD/PD#
IN
19
20
21
22
GND
PWR
PWR
PWR
PWR
Ground pin.
VDDA
GNDA
GND
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)
23
24
25
26
PCIeT_L0
PCIeC_L0
PCIeT_L1
PCIeC_L1
OUT
OUT
OUT
OUT
27
28
GND
PWR
PWR
Ground pin.
VDDPCIe
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)
29
30
31
32
PCIeT_L2
PCIeC_L2
PCIeT_L3
PCIeC_L3
OUT
OUT
OUT
OUT
1276E—12/14/07
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