January 2007
rev 1.1
ASM3P2579A
Pin Configuration (8-pin SOIC and TSSOP Packages)
XIN/CLKIN
XOUT
SSON
NC
VDD
1
2
3
8
7
6
5
NC
ASM3P2579A
ModOUT
VSS
4
Pin Description
Pin# Pin Name Type
Description
Crystal connection or external reference frequency input. This pin has dual functions. It
1
2
XIN/CLKIN
XOUT
I
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.
O
When SSON is HIGH, the spread spectrum is enabled and when LOW, it turns off the
spread spectrum. Connect the pin to ground When Spread Spectrum feature is not
required.
SSON
3
I
4
5
6
7
8
NC
VSS
-
P
O
-
No connect.
Ground connection.
Spread spectrum clock output.
No connect.
ModOUT
NC
VDD
P
Power supply for the entire chip
Modulation Profile
Specifications
Description
Frequency Range
Specification
12MHz < CLKIN < 30MHz
FIN/640
Modulation Equation
Frequency Deviation
±1% @ 24MHz
Low Power Peak EMI Reducing Solution
3 of 12
Notice: The information in this document is subject to change without notice.
PULSECORE [ PulseCore Semiconductor ]
