ICS9148-17 Просмотр технического описания (PDF) - Integrated Circuit Systems
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ICS9148-17 Datasheet PDF : 15 Pages
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ICS9148 - 17
Pin Descriptions
PIN NUMBER
1
2
PIN NAME
VDD1
REF0
CPU3.3#_2.51,2
3,9,16,22,27,
33,39,45
GND
4
X1
5
X2
6,14
7
8
10, 11, 12, 13
15, 47
VDD2
PCICLK_F
FS11, 2
PCICLK0
FS21, 2
PCICLK (1:4)
AGP (0:1)
CPU_STOP#1
17
SDRAM 11
18
20, 21,28, 29, 31,
32, 34, 35,37,38
19,30,36
PCI_STOP#1
SDRAM 10
SDRAM (0:9)
VDD3
23
SDATA
24
SCLK
24MHz
25
MODE1, 2
26
40, 41, 43, 44
42
46
48
48MHz
FS01, 2
CPUCLK (0:3)
VDDL
REF1
VDD4
TYPE
PWR
OUT
IN
DESCRIPTION
Ref (0:2), XTAL power supply, nominal 3.3V
14.318 MHz reference clock.
Indicates whether VDDL is 3.3V or 2.5V. High=2.5V CPU, LOW=3.3V
CPU1. Latched input.
PWR Ground.
IN
OUT
PWR
OUT
IN
OUT
IN
OUT
OUT
IN
OUT
IN
OUT
Crystal input, has internal load cap (33pF) and feedback
resistor from X2.
Crystal output, nominally 14.318MHz. Has internal load
cap (33pF).
Supply for PCICLK_F and PCICLK (0:4), nominal 3.3V
Free running PCI clock
Frequency select pin. Latched input
PCI clock output.
Frequency select pin. Latched input
PCI clock outputs.
Advanced Graphic Port outputs, powered by VDD4.
Halts CPUCLK (0:3) clocks and AGP (0:1) clocks at logic 0 level, when
input low (in Mobile Mode, MODE=0)
SDRAM clock output
Halts PCICLK (0:5) clocks at logic 0 level, when input low
(in mobile mode, MODE=0)
SDRAM clock output
OUT SDRAM clock outputs.
PWR
IN
IN
OUT
IN
OUT
IN
OUT
PWR
OUT
PWR
Supply for SDRAM (0:11), Core, 24MHz and 48MHz clocks,
nominal 3.3V.
Data input for I2C serial input.
Clock input of I2C input
24MHz output clock.
Pin 17, 18 function select pin, 1=Desktop Mode, 0=Mobile Mode.
Latched input.
48MHz output clock
Frequency select pin. Latched input
CPU clock outputs, powered by VDDL.
Supply for CPU (0:3), either 2.5V or 3.3V nominal
14.318MHz reference clock.
Supply for AGP (0:1)
Notes:
1: Internal Pull-up Resistor of 240K to 3.3V on indicated inputs
2: Bidirectional input/output pins, input logic levels are latched at internal power-on-reset. Use 10Kohm resistor to
program logic Hi to VDD or GND for logic low.
2
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