November 2003
rev 1.0
ASM3P2531A
Pin Configuration
8
7
NC
NC
CLKIN
VDD
1
2
NC
6
5
3
4
VSS
STOP
ModOUT
ASM3P2531A
Spread Range Selection, VDD = 3.3 V
CLKIN frequency
Spreading range
Modulation rate
(CLKIN/1280) KHz
35 MHz – 55 MHz
±1.65%
Pin Description
Pin# Pin Name Type
Description
1
2
3
4
CLKIN
VDD
I
External reference frequency input.
Power supply for the entire chip.
Ground to entire chip.
P
P
O
VSS
ModOUT
Spread spectrum clock output or reference output. Refer Standby Mode Selection.
5
STOP
I
Active LOW signal. When HIGH, enables ModOUT and when LOW, ModOUT
would be LOW.
6
7
8
NC
NC
NC
-
-
-
No connect.
No connect.
No connect.
Low Frequency EMI Reduction
2 of 8
Notice: The information in this document is subject to change without notice.
PULSECORE [ PulseCore Semiconductor ]
