PCS3I2189A PulseCore Semiconductor, PCS3I2189A Datasheet - Page 2

• Manufacturer Part Number: PCS3I2189A
• Description: Spread Spectrum Clock Generator
• Manufacturer: PulseCore Semiconductor

Pin Description
May 2008
rev 0.2
Pin Configuration
Spread Deviation Selection Table
Modulation Enable Setting Table
(For an Input CLK=15MHz)
Pin#
1
2
3
4
5
6
7
8
S1
0
0
1
1
CLKIN / XIN
SSON
Pin Name
ModOUT
XOUT
SSON
H
L
VDD
VSS
S1
S0
S0
0
1
0
1
Type
O
O
O
P
P
I
I
I
Notice: The information in this document is subject to change without notice.
Spread Spectrum Clock Generator
CLKIN / XIN
Deviation (
No Modulation
Modulation
Crystal connection or External reference Clock Input
Crystal connection. If using an external reference, this pin must be left
unconnected.
Modulation enables pin. When HIGH enables spread spectrum modulation. Has an
Internal pull up resistor
Spread range select. Digital logic input used to select frequency deviation
(Refer Spread Deviation Table). This pin has an internal pull-up resistor.
Spread range select. Digital logic input used to select frequency deviation
(Refer Spread Deviation Table). This pin has an internal pull-up resistor.
Ground Connection. Connect to system ground.
Low EMI 4x clock output.
Power Supply Voltage Pin. Connect to +3.3V.
Modulation
XOUT
SSON
0.5
1.0
1.5
2.0
S1
1
2
4
3
± %)
PCS3P2189A
8
7
5
6
Description
S0
VDD
VSS
ModOUT
PCS3P2189A
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