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ICS9220B bảng dữ liệu(PDF) 2 Page - Integrated Device Technology

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Giải thích chi tiết về linh kiện  Programmable RambusTM XDRTM Clock Generator
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ICS9220B bảng dữ liệu(HTML) 2 Page - Integrated Device Technology

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1427A—01/26/10
ICS9220B
Programmable Rambus
TM XDRTMClock Generator
2
IDTTM
Programmable RambusTM XDRTMClock Generator
Pin Description
PIN #
PIN NAME
PIN TYPE
DESCRIPTION
1
AVDD2.5
PWR
2.5V Analog Power pin for Core PLL
2AGND
PWR
Analog Ground pin for Core PLL
3IREFY
IN
This pin establishes the reference current for the differential
clock pairs. This pin requires a fixed precision resistor tied to
ground in order to establish the appropriate current.
4AGND
PWR
Analog Ground pin for Core PLL
5
CLK_INT
IN
"True" reference clock input.
6
CLK_INC
IN
"Complementary" reference clock input.
7
VDD2.5
PWR
Power supply, nominal 2.5V
8
GND
PWR
Ground pin.
9
SMBCLK
IN
Clock pin of SMBUS circuitry, 5V tolerant
10
SMBDAT
I/O
Data pin of SMBUS circuitry, 5V tolerant
11
OE
IN
Active high input for enabling outputs.
0 = tri-state outputs, 1= enable outputs
12
AS1
IN
Default SMBus Address Select.
13
AS2
IN
Default SMBus Address Select.
14
BYPASS#/PLL
IN
Input to select Bypass(fan-out) or PLL (ZDB) mode
0 = Bypass mode, 1= PLL mode
15
VDD2.5
PWR
Power supply, nominal 2.5V
16
GND
PWR
Ground pin.
17
GND
PWR
Ground pin.
18
ODCLK_C1
OUT
"Complementary" side of open drain differential clock output.
This open drain output needs an external resistor network..
19
ODCLK_T1
OUT
"True" side of open drain differential clock output. This open
drain output needs an external resistor network..
20
GND
PWR
Ground pin.
21
VDD2.5
PWR
Power supply, nominal 2.5V
22
VDD2.5
PWR
Power supply, nominal 2.5V
23
GND
PWR
Ground pin.
24
ODCLK_C0
OUT
"Complementary" side of open drain differential clock output.
This open drain output needs an external resistor network..
25
ODCLK_T0
OUT
"True" side of open drain differential clock output. This open
drain output needs an external resistor network..
26
GND
PWR
Ground pin.
27
GND
PWR
Ground pin.
28
VDD2.5
PWR
Power supply, nominal 2.5V



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