ICS9219 Datasheet, PDF (2/8 Pages) Integrated Circuit Systems – Direct Rambus Clock Generator Lite

ICS9219
Pin Descriptions
PIN #
1
2
3
4
5
6
7
8
PIN NAME
VDDT
GND
X2
X1
VDD
REF
GND
FS1*
PIN TYPE
PWR/IN
PWR
OUT
IN
PWR
OUT
PWR
IN
9
FS2*
IN
10
VDD
11
GND
PWR
PWR
12
BUSCLKC
OUT
13
BUSCLKT
OUT
14
GND
PWR
15
VDD
PWR
16
FS0*
IN
* Pins have 60K internal pull-up to VDD
DESCRIPTION
Power supply, nominal 3.3V/Test mode
Ground pin.
Crystal output (14MHz to 25MHz)
Crystal input (14MHz to 25MHz)
Power supply, nominal 3.3V
Reference of Input
Ground pin.
Frequency select pin.
Real-time frequency select pin with internal 120Kohm pull-up resistor (check
SMBus HW/SW setting for priority).
Power supply, nominal 3.3V
Ground pin.
Output clock connected to the Rambus channel. This output is the complement
of BUSCLK.
Output clock connected to the Rambus channel. This output is the true
component of BUSCLK.
Ground pin.
Power supply, nominal 3.3V
Frequency select pin.
Table 2: Function Table
VDDT
FS(2:0)
INPUT
MULT
MODE
BUSCLKT
BUSCLKC
3.3V 0 0 0 16 NORMAL INPUT x MULT BUSCLKC
3.3V 1 1 1 21.33 NORMAL INPUT x MULT BUSCLKC
3.3V 1 1 0 16 NORMAL INPUT x MULT BUSCLKC
3.3V 0 0 1 21.33 NORMAL INPUT x MULT BUSCLKC
3.3V 1 0 X
-
TEST
BUSCLKT/2
BUSCLKC/2
3.3V 0 1 X
-
TEST
BUSCLKT/4
BUSCLKC/4
0
00X
-
TEST
X1
X1(INVERT)
0
11X
-
TEST
X1
X1(INVERT)
0
10X
-
TEST
X1/2
X1(INVERT)/2
0
01X
-
TEST
X1/4
X1(INVERT)/4
REF
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
0931B—10/25/04
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