November 2006
rev 0.2
P2027A
Pin Configuration
XIN / CLKIN
XOUT
1
8
VDD
SRO
2
3
4
7
6
5
P2027A
ModOUT
SSON
MRA
VSS
Pin Description
Pin#
Pin Name
Type
Description
Crystal connection or external reference frequency input. This pin has dual
functions. It can be connected to either an external crystal or an external
reference clock.
1
XIN/CLK
I
Crystal connection. Input connection for an external crystal. If using an
external reference, this pin must be left unconnected.
Digital logic input used to select Modulation Rate (see Table 1). This pin
has an internal pull-up resistor.
2
XOUT
O
3
4
MRA
VSS
I
P
Ground Connection. Connect to system ground.
Digital logic input used to enable Spread Spectrum function (Active Low).
Spread Spectrum function enable when low. This pin has an internal pull-low
resistor.
5
SSON
I
6
7
8
ModOUT
SR0
O
I
Spread Spectrum Clock Output.
Digital logic input used to select Spreading Range (see Table 1). This pin
has an internal pull-up resistor.
VDD
P
Connect to +3.3V Power Supply.
General Purpose EMI Reduction IC
2 of 8
Notice: The information in this document is subject to change without notice.
PULSECORE [ PulseCore Semiconductor ]
