ICS9148-11 데이터 시트보기 (PDF) - Integrated Circuit Systems
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ICS9148-11 Datasheet PDF : 14 Pages
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ICS9148 - 11
Pin Descriptions
PIN NUMBER
2
3, 9, 16, 22, 27,
33, 39, 45
PIN NAME
REF0
GND
4
X1
5
25
7
8, 10, 11, 12
13, 15
26
23
24
1, 6, 14,
19, 30, 36,
17, 18, 20, 21,
32, 34, 35, 37, 38
X2
MODE
PCLK_F
PCICLK (0:5)
OE
SDATA
SCLK
VDD1, VDD2,
VDD3
SDRAM
(0:4) (8:11)
42, 48
VDDL2, VDDL1
40, 41, 43, 44
46, 47
28
29
31
CPUCLK (0:3)
IOAPIC (0:1)
SDRAM7
PCI_STOP#
SDRAM6
CPU_STOP#
SDRAM5
PWR_DWN#
TYPE
DESCRIPTION
OUT 14.318 MHz reference clock outputs.
PWR Ground.
IN
OUT
IN
OUT
XTAL_IN 14.318MHz Crystal input, has internal 33pF load cap and feed
back resistor from X2
XTAL_OUT Crystal output, has internal load cap 33pF
Mode select pin for enabling power management features.
Free running BUS clock during PCI_STOP# = 0.
OUT BUS clock outputs.
IN Logic input for output enable, tristates all outputs when low.
IN Serial data in for serial config port.
IN Clock input for serial config port.
PWR Nominal 3.3V power supply, see power groups for function.
OUT SDRAM clocks 66.6MHz.
PWR
OUT
OUT
OUT
IN
OUT
IN
OUT
IN
CPU and IOAPIC clock power supply, either
2.5 or 3.3V nominal
CPU output clocks, powered by VDDL2 (66.6 MHz)
IOAPIC clock output, (14.318 MHz) powered by VDDL1
SDRAM clock 66.6 MHz selected
Halts PCICLK (0:5) at logic "0" level when low
SDRAM clock 66.6 MHz selected
Halts CPUCLK clocks at logic "0" level when low
SDRAM clock 66.6 MHz selected
Powers down chip, active low
Power Groups
VDD1 = REF0, X1, X2
VDD2 = PCICLK_F, PCICLK (0:5)
VDD3 = SDRAM (0:4) (8:11) SDRAM5/PWR_DWN#,
SDRAM6/CPU_STOP#, SDRAM7/PCI_STOP#, supply for PLL Core.
VDDL1 = IOAPIC (0:1)
VDDL2 = CPUCLK (0:3)
2
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