November 2006
rev 1.6
Pin Configuration (6-pin TSOT- 23 Package)
REFOUT
1
XOUT
2
6
ASM3P2870A
V
SS
ModOUT
V
DD
ASM3P2870A
5
4
XIN / CLKIN
3
Pin Description
Pin#
1
2
3
4
5
6
Pin Name
REFOUT
XOUT
XIN / CLKIN
V
DD
ModOUT
V
SS
Type
O
O
I
P
O
P
Description
Buffered output of the input frequency
Crystal connection. If using an external reference, this pin must be left unconnected.
Crystal connection or external reference frequency input. This pin has dual functions. It
can be connected either to an external crystal or an external reference clock.
Power supply for the entire chip.
Spread spectrum clock output.
Ground connection.
Pin Configuration (8-pin SOIC and TSSOP Packages)
XIN / CLKIN
XOUT
REFOUT
NC
1
2
3
4
8
7
6
5
V
DD
NC
ModOUT
V
SS
ASM3P2870A
Pin Description
Pin#
1
2
3
4
5
6
7
8
Pin Name
XIN/CLKIN
XOUT
REFOUT
NC
V
SS
ModOUT
NC
V
DD
Type
I
O
O
-
P
O
-
P
Description
Crystal connection or external reference frequency input. This pin has dual functions. It
can be connected either to an external crystal or an external reference clock.
Crystal connection. If using an external reference, this pin must be left unconnected.
Buffered output of the input frequency
No connect.
Ground connection.
Spread spectrum clock output.
No connect.
Power supply for the entire chip.
Low Power Peak EMI Reducing Solution
Notice: The information in this document is subject to change without notice.
2 of 12