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C9821GQ Datasheet

  • C9821GQ

  • SINGLE CLOCK DRIVER|SSOP|24PIN|PLASTIC

  • 18頁

  • ETC

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APPROVED PRODUCT
C9821
Direct Rambus
餂?/div>
Plus Clock Generator
Product Features
鈥?/div>
High Speed Clock support - provides a 267 to
400MHz differential clock source for Direct
Rambus餂?memory systems for an 1.6 GbPS
data transfer rate
Synchronization Flexibility - provides signals to
synchronize the clock domains of the Rambus餂?/div>
Channel with an external system or processor
clock, provided by C9801, C9812, C9830,
C9840, C9850, C9851, and the C9853.
Power Management Support permits channel
clocks to be enabled and disabled as required
Supports Independent Channel Clocking
24 pin 150 mil SSOP Package
Supports Intel Architecture platforms
Product Description
The C9821 is a Rambus餂?compliant DRCG clock
synchronizer. It contains a Phase Locked Loop that
provides complimentary Rambus餂?memory clocks.
Included in its functionality is the control logic to
phase and frequency synchronizing the device鈥檚
output clocks with the system reference clock. Power
management logic is also provided for Mobile
application and green PC functionality. Also included
are separate power pins for each internal functional
block so as to minimize interaction of these sections
with each other and thus maximize the device
performance.
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Pin Configuration
Block Diagram
VddlR
Refclk
VddP
VssP
VssI
PclkM
SynClkN
VssC
VddC
VddlPD
StopB
PwrDnB
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
S0
S1
VddO
VssO
Clk
N/C
ClkB
VssO
VddO
Mult0
Mult1
S2
REFCLK
MULT 0:1
PLL
PCLKM
SYNCLKN
Phase
Aligner
Output
Control
Logic
CLK
CLKB
S0:2
STOPB
Test
Logic
Figure: 2
Figure: 1
Cypress Semiconductor Corporation
525 Los Coches St.
Milpitas, CA 95035. Tel: 408-263-6300, Fax: 408-263-6571
http://www.cypress.com
Document#: 38-07092 Rev. **
05/03/2001
Page 1 of 18

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  • 英文版
    CHANNEL PHOTO MULTIPLIER
    PERKINELMER
  • 英文版
    CHANNEL PHOTO MULTIPLIER
    PERKINELMER&nbs...
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    CHANNEL PHOTO MULTIPLIER
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    PERKINELMER&nbs...
  • 英文版
    High Performance Pentium 4 Clock Synthesizer
    CYPRESS
  • 英文版
    High Performance Pentium 4 Clock Synthesizer
    CYPRESS [C...
  • 英文版
    SINGLE CLOCK DRIVER|SSOP|24PIN|PLASTIC
    ETC
  • 英文版
    SINGLE CLOCK DRIVER|SSOP|24PIN|PLASTIC
    ETC
  • 英文版
    High Performance Pentium 4 Clock Synthesizer
    CYPRESS
  • 英文版
    High Performance Pentium 4 Clock Synthesizer
    CYPRESS [C...
  • 英文版
    High Performance Pentium 4 Clock Synthesizer
    CYPRESS
  • 英文版
    High Performance Pentium 4 Clock Synthesizer
    CYPRESS [C...
  • 英文版
    CPU SYSTEM CLOCK GENERATOR|TSSOP|56PIN|PLASTIC
    ETC
  • 英文版
    CPU SYSTEM CLOCK GENERATOR|SSOP|56PIN|PLASTIC
    ETC

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