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Электронный компонент: CS9883A

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GENERAL DESCRIPTION
FEATURES
CS9883/CS9883A
110 MSPS/140 MSPS Analog Flat Panel Interface
USA:
4020 Moorpark Avenue Suite 115
San Jose, CA, 95117
Tel: 408-243-8388 Fax: 408-243-3188
Sales@myson.com.tw
www.myson.com.tw
Rev. 0.92 November2002
page 1 of 41
Myson Century, Inc.
Taiwan:
No. 2, Industry East Rd. III,
Science-Based Industrial Park, Hsin-Chu, Taiwan
Tel: 886-3-5784866 Fax: 886-3-5784349
APPLICATIONS
140 Msps maximum conversion rate.
350MHz analog bandwidth.
0.5V to 1.0V analog input range.
500ps p-p PLL clock jitter.
Power-Down Mode.
3.3V power supply.
Midscale clamping.
Sync detect for "Hot Plugging".
Full sync processing.
Low power: 1W typical at 140MHz.
Internal PLL generates CLOCK from HSYNC.
Serial port interface.
Fully Programmable.
4:2:2 output format mode.
The CS9883 is a complete 8-bit 140 Msps
monolithic analog interface optimized for capturing
RGB graphics signals from personal computers and
workstations. Its 140 Msps encode rate capability
and full-power analog bandwidth of 350MHz
supports display resolutions of up to 1280x1024
(SXGA) at 85Hz with sufficient input bandwidth to
accurately acquire and digitize each pixel.
To minimize system cost and power dissipation,
the CS9883 includes an internal +1.25V reference,
PLL to generate a pixel clock from HSYNC, and
programmable gain, offset and clamp circuits. The
users provide only a +3.3V power supply, analog
input, and HSYNC and COAST signals.
The CS9883 is on-chip PLL generates a pixel
clock from the HSYNC and COAST inputs. Pixel
clock output frequencies range from 20MHz to
140MHz. PLL clock jitter is typically 500ps p-p. When
the COAST signal is presented, the PLL maintains its
output frequency in the absence of HSYNC. A 32-
step sampling phase adjustment is provided. Data,
HSYNC and data clock output phase relationships
are always maintained. The CS9883 also offers full
sync processing for composite sync and sync-on-
green applications.
A clamp signal is generated internally or may be
provided by the user through the CLAMP input pin.
This device is fully programmable via two-wire serial
port.
Fabricated in an advanced CMOS process, the
CS9883 is provided in a space-saving 80-lead LQFP
surface mount plastic package and is specified over
a 0
C to +70
C temperature range.
RGB graphics processing
LCD monitors and projectors.
Plasma display panels.
Scan converters.
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BLOCK DIAGRAM
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CS9883/CS9883A
CLAMP
CLAMP
CLAMP
A/D
A/D
A/D
Sync Processing
Clock Generation
Serial Register
and
Power Management
and
REF
8
8
8
R
AIN
G
AIN
B
AIN
HSYNC
COAST
CLAMP
FILT
SCL
SDA
A
0
R
OUTA
G
OUTA
B
OUTA
MIDSCV
DTACK
HSOUT
VSOUT
SOGOUT
REF
BYPASS
CS9883/
CS9883A