
DATASHEET
MPEG CLOCK SYNTHESIZER
ICS650-12
IDT / ICS MPEG CLOCK SYNTHESIZER
1
ICS650-12
REV E 051310
Description
The ICS650-12 is a low cost, low-jitter, high-performance
clock synthesizer designed to produce fixed clock outputs of
13.5 MHz and 27.0 MHz, and four selectable clock outputs:
two Processor Clocks (PCLK1) and PCLK2), an Audio
Clock, and a Communications Clock (CCLK). Using analog
Phase-Locked Loop (PLL) techniques, the device uses a
27.0 MHz clock or fundamental crystal to produce clocks
ideal for Digital Video/MPEG-based applications.
Features
Packaged in 20-pin tiny SSOP (QSOP)
RoHS 5 (green) or RoHS 6 (green and lead free)
compliant package
Input frequency of 27.0 MHz
Zero ppm synthesis error in output clocks
Provides fixed 13.5 MHz and 27.0 MHz. Also provides
two selectable processor clocks, one audio clock, and
one communications clock.
Ideal for digital video MPEG-based applications
3.3 V or 5.0 V operating voltage
Entire chip powers down (when CS1=CS0=0)
Block Diagram
Input
Buffer/
Crystal
Oscillator
Clock
Synthesis
and Control
Circuitry
27.0 MHz crystal
or clock
PS2:0
CS1:0
AS2:0
PCLK1
PCLK2
ACLK
CCLK
13.5 MHz
27.0 MHz
/2