ICS91718 Datasheet, PDF (2/11 Pages) Integrated Circuit Systems – Low EMI, Spread Modulating, Clock Generator

ICS91718
Pin Descriptions
PIN
PIN NAME
#
PIN
TYPE
DESCRIPTION
1
CLKIN
IN Input clock
2
VDD
PWR Power supply, nominal 3.3V
3
GND
PWR Ground pin.
4 **CLKOUT/FS_IN0
CLKOUT modulated clock output
I/O _{FS_IN0 latched input, selects modulation percentage/type}
5 REF_OUT/FS_IN1** I/O ^{REF_OUT, unmodulated reference clock output}
FS_IN1 latched input, selects modulation percentage/type
6
SDATA
I/O Data pin for I2C circuitry 5V tolerant
7
SCLK
IN Clock pin of I2C circuitry 5V tolerant
Asynchronous active low input pin used to power down the device into a
8
PD#*
low power state. The internal clocks are disabled and the VCO and the
IN _{crystal are stopped. The latency of the power down will not be greater}
than 1.8ms.
* Internal Pull-Up Resistor
** Internal Pull-Down Resistor
0500D—07/15/04
2