ICS9118-01 Datasheet, PDF (1/5 Pages) Integrated Circuit Systems – Frequency Generator for Digital Video Systems

Integrated
Circuit
Systems, Inc.
ICS9118-01
Obsolete _ICS9118-02
Frequency Generator for Digital Video Systems
General Description
The ICS9118-01 and ICS9118-02 are low-cost, high-
perform-ance clock generators designed to support digital
video sys-tems. 27 MHz VIDEO, 1.8 MHz UART and
AUDIO clocks are generated from the recovered 27 MHz
signal. The on-chip crystal oscillator can be used in
conjunction with an exter-nal D/A conversation circuit to
provide ±130 ppm clock recovery using a standard 27
MHz crystal (contact ICS for application details).
The audio clock is synthesized from 27 MHz using a high
accuracy, low jitter PLL to meet the synchronization and
-96dB signal-to-noise ratios required by 16-bit DSP systems.
Fast output clock edge rates minimize board-induced jitter.
Features
• Generates 27 MHz VIDEO, 1.8 MHz UART and
synchronous AUDIO codec clocks
• Selectable AUDIO clock supports 256x and 384x
over-sampling of 16.00, 22.05, 24.00, 32.00, 44.10
and 48.00 kHz
• On-chip crystal oscillator enables 27 MHz
clock recovery
• 80ps one sigma jitter maintains 16-bit performance
• 3.0V - 5.5V supply range
• 14-pin, 150-mil SOIC package
Pin Configuration
Applications
• Specifically designed to support the high
performance clocking requirements of digital video
set-top and multi-media systems
14-Pin SOIC
ICS9118-02 Obsolete
Block Diagram
Functionality
VDD=3.0-5.5V, TEMP=0-70°
X1, X2
(MHz)
27.00
27.00
27.00
27.00
27.00
27.00
27.00
27.00
FS
[2:0]
000
001
010
011
100
101
110
111
AUDIO
01
(MHz)
Tristate
4.096
5.644
6.144
8.192
11.289
12.288
Low
AUDIO
02
(MHz)
Tristate
6.144
8.467. 2
9.216
12.288
16.934. 2
18.432
Low
REF
(MHz)
Tristate
27.00
27.00
27.00
27.00
7.00
27.00
Low
UART
(MHz)
Tristate
1.8620
1.8620
1.8620
1.8620
1.8620
1.8620
Low
9118-01 9118-02 RevB 7/27/99
PRODUCT PREVIEW documents contain information on products in the formative or
design phase development. Charactersitic data and other specifications are design
goals. ICS reserves the right to change or discontinue these procucts without notice.