October 2005
rev 1.0
Pin Configuration (6-pin TSOT- 23 Package)
ASM3P2474A
FSEL
XOUT
1
2
6
VSS
ASM3P2474A
5
4
ModOUT
VDD
XIN / CLKIN
3
Pin Description
Pin#
1
2
3
4
5
6
Pin Name
FSEL
XOUT
XIN / CLKIN
VDD
ModOUT
VSS
Type
I
O
I
P
O
P
Description
Selection Pin for 1X and 2X Output Frequency Options. Please refer the table
“Frequency Selection Options” for further details
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
1
2
8
7
6
5
VDD
NC
ModOUT
VSS
ASM3P2474A
FSEL
3
NC
4
Pin Description
Pin#
1
2
3
4
5
6
7
8
Pin Name
XIN/CLKIN
XOUT
FSEL
NC
VSS
ModOUT
NC
VDD
Type
I
O
I
-
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.
Selection Pin for 1X and 2X Output Frequency Options. Please refer the table
“Frequency Selection Options” for further details
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.
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ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]
