ASM3I2187AG-08TR PULSECORE [PulseCore Semiconductor], ASM3I2187AG-08TR Datasheet - Page 2

• Manufacturer Part Number: ASM3I2187AG-08TR
• Description: Spread Spectrum Clock Generator for Mobile Applications
• Manufacturer: PULSECORE [PulseCore Semiconductor]

Pin Description
* SSON Pin is available in ASM3P2187A Device and PDB Pin is available in ASM3P2187B Device
June 2006
rev 0.1
Pin Configurations
Pin#
1
2
3
4
5
6
7
8
SSON / PDB*
Pin Name
REFOUT
ModOUT
XOUT
VDD
VSS
SEL
XIN
Spread Spectrum Clock Generator for Mobile Applications
Type
O
O
O
P
P
I
I
I
Notice: The information in this document is subject to change without notice.
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.
Modulation enable pin/ Power down pin. Has an Internal pull up resistor
Modulation rate setting pin
Centre spread, SEL = “L” : Frequency Deviation ± 0.5%
Centre spread, SEL = “H” : Frequency Deviation ± 1.0%
Has an Internal pull up resistor.
Non-modulated clock output pin. The Frequency is same as input
frequency. This pin becomes to “L” at power-down.
Ground Connection. Connect to system ground.
Modulated clock output pin
This pin becomes to“L” at power-down.
Power Supply Voltage Pin. Connect to +3.3V.
SSON
XOUT
XOUT
PDB
XIN
SEL
XIN
SEL
1
2
3
4
1
2
3
4
ASM3P2187A
ASM3P2187B
Description
8
7
5
6
8
7
5
6
VDD
VSS
ModOUT
REFOUT
VDD
VSS
REFOUT
ModOUT
ASM3P2187A/B
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