January 2007
rev 1.7
ASM3P2869A
Pin Configuration (8-pin SOIC and TSSOP Packages)
1
2
3
4
8
7
6
VDD
XIN / CLKIN
XOUT
ASM3P2869A
ModOUT
VSS
REFOUT
NC
5
Pin Description
Pin# Pin Name
Type
Description
Crystal connection or external reference frequency input. This pin has dual functions. It
1
XIN / CLKIN
I
can be connected either to an external crystal or an external reference clock.
2
3
4
5
6
7
8
XOUT
REFOUT
NC
O
O
-
Crystal connection. If using an external reference, this pin must be left unconnected.
Buffered output of the input frequency.
No connect.
VSS
P
O
-
Ground connection.
ModOUT
NC
Spread spectrum clock output.
No connect.
VDD
P
Power supply for the entire chip
Modulation Profile
Specifications
Description
Specification
For 2.5V Supply
6MHz < CLKIN < 12MHz
6MHz < CLKIN < 13MHz
FIN/256
Frequency Range
For 3.3V Supply
Modulation Equation
Frequency Deviation
±1% (Typ) @ 10MHz
Low Power Peak EMI Reducing Solution
3 of 12
Notice: The information in this document is subject to change without notice.