ics9248-179 ETC-unknow, ics9248-179 Datasheet - Page 2

• Manufacturer Part Number: ics9248-179
• Description: 633/635/640; Main System Clock
• Manufacturer: ETC-unknow

Preliminary Product Preview
Pin Configuration
Third party brands and names are the property of their respective owners.
ICS9248-179
4, 5, 8, 14, 20, 24,
26, 34, 39, 42, 46
PIN NUMBER
1, 11, 17, 21,
16, 15, 13
37, 38, 43
41, 45, 48
19, 18
40, 44
25, 36
10
12
22
23
27
28
29
30
31
32
33
35
2
3
6
7
9
SDRAM_STOP#
AGPCLK (1:0)
CPUCLK (1:0)
PCICLK (4:2)
AGP_STOP#
CPU_STOP#
PIN NAME
PCI_STOP#
PCICLK_F
24_48M Hz
PCICLK0
PCICLK1
AGPSEL
SDRAM
SDATA
48MHz
VDDL
SCLK
REF0
REF1
VDD
GND
PD#
FS0
FS1
FS2
FS3
FS4
NC
X1
X2
TYPE
PWR
PWR
PWR
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
I/O
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
-
3.3V Power supply for SDRAM output buffers, PCI output buffers,
reference output buffers and 48MHz output.
Frequency select pin.
14.318 MHz reference clock.
Frequency select pin.
14.318 MHz reference clock.
Ground pin for outputs.
Crystal input,nominally 14.318M Hz.
Crystal output, nominally 14.318MHz.
Frequency select pin.
PCI clock output, not affected by PCI_STOP#.
Frequency select pin.
PCI clock output.
Frequency select pin.
PCI clock output.
PCI clock outputs.
AGP outputs defined as 2X PCI. These may not be stopped.
48M Hz output clock.
AGP frequency select pin.
Clock output for super I/O/USB default is 24M Hz.
Clock pin of I
Data pin for I
Stops all AGP clocks besides the AGP_F clocks at logic 0 level,
when input low.
Stops all SDRAM clocks at logic 0 level, when input low.
Asynchronous active low input pin used to power down the device 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 3ms.
Stops all CPUCLKs clocks at logic 0 level, when input low
Stops all PCICLKs besides the PCICLK_F clocks at logic 0 level,
when input low.
SDRAM clock output.
No connect pins.
CPU clock outputs.
Supply for CPU and IOAPIC clocks at 2.5V nominal.
2
2
2
C circuitry 5V tolerant.
C circuitry 5V tolerant.
DESCRIPTION