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 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 C9822 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>
Block Diagram
Pin Configuration
REFCLK
MULT 0:1
PLL
PCLKM
SYNCLKN
Phase
Aligner
Output
Control
Logic
CLK
CLKB
S0:2
STOPB
Test
Logic
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
Figure: 1
Figure: 2
Cypress Semiconductor Corporation
525 Los Coches St.
Milpitas, CA 95035. Tel: 408-263-6300, Fax: 408-263-6571
http://www.cypress.com
Document#: 38-07093 Rev. **
05/04/2001
Page 1 of 19
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