Integrated
Circuit
Systems, Inc.
ICS9222-01
Dual Memory Clock Generator
General Description
The
ICS9222-01
is a High-speed clock generator providing
two channels up to 450 MHz differential clock source for
direct Rambus_memory system. It includes two independent
DDLL鈥檚 (Distributed Delay locked loop) and phase detection
mechanisms to synchronize eachdirect Rambus_ channel
clock to an external system clock.
ICS9222-01
provides a
solution for a broad range of Direct Rambus memory
applications. The device works in conjunction with the
ICS964S101, as well as 9250-22 and others (depending on
chipset).
The
ICS9222-01
power management support system turns
鈥渙ff鈥?the Rambus channel clock to minimize power
consumption for mobile and other power sensitive
applications. In 鈥渃lock off鈥?mode the device remains 鈥渙n鈥?/div>
while the output is disabled, allowing fast transitions between
clock-off and clock鈥搊n states. In 鈥減ower down鈥?mode it
completely powers down for minimum power dissipation.
Features
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Compatible with all Direct Rambus鈩?based ICs
Up to 450 MHz differential clock source for direct
Rambus鈩?memory system
Cycle to cycle jitter is less than 100 ps
3.3 鹵 5% supply
Synchronization flexibility: Supports systems that need
clock domains of Rambus channel to synchronize with
system or processor clock, or systems that do not
require synchronization of the Rambus clock to another
system clock.
Excellent power management support
REFCLK input is from the main clock generator such as
a 9250-22.
鈥?/div>
鈥?/div>
Block Diagram
CLK_STOP#
PD#
FS (2:0)
GND
PLLclk
PCLK1
SYNCLK1
Test MUX
Bypass MUX
Pin Configuration
VDDREF
REFCLK
VDDC
SYNCLK0
PCLK0
GND
VDDP
GND
SYNCLK1
PCLK1
VDDC
VDDIPD
CLK_STOP#
PD#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
FS0
FS1
FS2
GND
CLKB0
CLK0
VDDCLK
VDDCLK
CLK1
CLKB1
GND
MULT_0
MULT_1
MULT_2
Bypclk
Phase
Detector
Phase
Aligner
REFCLK
B
A
MULT (2:0)
2
GND
CLK1
CLKB1
PLL
Phase
Aligner
Phase
Detector
GND
PAclk
CLK0
CLKB0
PCLK0
SYNCLK0
28-Pin TSSOP
0274C鈥?1/14/05
ICS9222-01
ICS9222-01相關(guān)型號(hào)PDF文件下載
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