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ICS951412B bảng dữ liệu(PDF) 2 Page - Renesas Technology Corp

tên linh kiện ICS951412B
Giải thích chi tiết về linh kiện  System Clock Chip for ATI RS480 K8-based Systems
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nhà sản xuất  RENESAS [Renesas Technology Corp]
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ICS951412B bảng dữ liệu(HTML) 2 Page - Renesas Technology Corp

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ICS951412B
1232A—06/12/06
Pin Descriptions
PIN
#
PIN NAME
PIN
TYPE
DESCRIPTION
1
X1
IN
Crystal input, Nominally 14.318MHz.
2
X2
OUT
Crystal output, Nominally 14.318MHz
3
VDD48
PWR
Power pin for the 48MHz output.3.3V
4
USB_48MHz
OUT
48.00MHz USB clock
5
GND
PWR
Ground pin.
6
NC
N/A
No Connection.
7
SCLK
IN
Clock pin of SMBus circuitry, 5V tolerant.
8
SDATA
I/O
Data pin for SMBus circuitry, 5V tolerant.
9
**FS2
IN
Frequency select pin.
10
**CLKREQA#
IN
Output enable for PCI Express (SRC) outputs. SMBus selects which
outputs are controlled.
0 = enabled, 1 = tri-stated
11
**CLKREQB#
IN
Output enable for PCI Express (SRC) outputs. SMBus selects which
outputs are controlled.
0 = enabled, 1 = tri-stated
12
SRCCLKT7
OUT
True clock of differential SRC clock pair.
13
SRCCLKC7
OUT
Complement clock of differential SRC clock pair.
14
VDDSRC
PWR
Supply for SRC clocks, 3.3V nominal
15
GNDSRC
PWR
Ground pin for the SRC outputs
16
SRCCLKT6
OUT
True clock of differential SRC clock pair.
17
SRCCLKC6
OUT
Complement clock of differential SRC clock pair.
18
SRCCLKT5
OUT
True clock of differential SRC clock pair.
19
SRCCLKC5
OUT
Complement clock of differential SRC clock pair.
20
GNDSRC
PWR
Ground pin for the SRC outputs
21
VDDSRC
PWR
Supply for SRC clocks, 3.3V nominal
22
SRCCLKT4
OUT
True clock of differential SRC clock pair.
23
SRCCLKC4
OUT
Complement clock of differential SRC clock pair.
24
SRCCLKT3
OUT
True clock of differential SRC clock pair.
25
SRCCLKC3
OUT
Complement clock of differential SRC clock pair.
26
GNDSRC
PWR
Ground pin for the SRC outputs
27
ATIGCLKT1
OUT
True clock of differential SRC clock pair.
28
ATIGCLKC1
OUT
Complementary clock of differential SRC clock pair.



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