GF9103 반도체 회로 부품 판매점
Over-Sampling Color Space Converter
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 Gennum |
www.DataSheet4U.com
MultiGEN ™ GF9103 Over-Sampling
Color Space Converter for Video
Monitoring
DATA SHEET
FEATURES
• 4:2:2 to over-sampled RGB or YCBCR conversion in a
single device
• single 10 bit 4:2:2 input
• internal 4:2:2 de-multiplexer
• 4:2:2 to 8:8:8 interpolation filters
• internal YCBCR to RGB color space conversion
• optional YCBCR (8:8:8) output mode
• setup insertion in Luminance channel under user
control
• user selectable digital SIN X/X correction
• rounding to 10/8 bit resolution per output channel
• 40 MHz maximum clock rate
• single +5 V power supply
APPLICATIONS
• Over-Sampling 4:2:2 to Analog RGB Conversions for
video monitoring
• Over-Sampling 4:2:2 to Analog YCBCR Conversions for
video monitoring
ORDERING INFORMATION
PART NUMBER
PACKAGE
TEMPERATURE RANGE
GF9103-CPS
68 pin PLCC
0° to 70° C
GF9103-CTS
68 pin PLCC Tape
0° to 70° C
DEVICE DESCRIPTION
The GF9103 is specifically designed to simplify conversions
from 4:2:2 component digital video to analog RGB or
analog YCBCR component video. The GF9103 simplifies
this process by performing 4:2:2 to 8:8:8 interpolation,
digital color space conversion and digital SIN X/X
correction in a single device. Immediately following the
GF9103, three over-sampled channels of RGB or YCBCR
data may be passed through Digital to Analog converters
and simplified analog reconstruction filters.
The GF9103 accepts a single 10 bit stream of 4:2:2 data
and internally de-multiplexes it into three 10 bit channels of
YCBCR data. The YCBCR data is then passed through
three linear phase FIR filters that over-sample the Y data by
a factor of 2 and the CB and CR data by a factor of 4.
While operating in an over-sampled RGB output mode, the
interpolated YCBCR data is passed through the internal
color space converter to convert the YCBCR data to RGB
data according to CCIR-601. Alternatively, the color space
converter may be bypassed to obtain over-sampled YCBCR
(8:8:8) output data. While operating in YCBCR output mode,
setup may be dynamically inserted into the Luminance
channel.
Prior to output rounding, over-sampled YCBCR or RGB data
may be corrected for SIN X/X characteristics of D/A
conversion. Output data may be rounded to 10 or 8 bit
resolution per channel. CB and CR may be presented as
signed or unsigned data.
The GF9103 is packaged in a 68 pin PLCC package,
operates with a single +5 V power supply and typically
consumes only 85 mA of current when operated at 27 MHz.
SETUP
SELECT_MATRIX
BYPASS
CONVERT
OE
MULTIPLEXED 10
4:2:2 DATA
STREAM IN
CLK
SYNC
Y
4:2:2 CB
DEMUX
CR
Y
X2
SETUP
Y
X4 CB
CB
CR
X4
CR
Y/G
YCBCR
TO
RGB
MATRIX
CB/B
CR/R
Y/G
SIN X/X
CB/B
SIN X/X
CR/R
SIN X/X
CLIP & ROUND
Y/G
CB/B
CLIP & ROUND
CB/B
2's COMP
CR/R CR/R
CLIP & ROUND
2's COMP
FUNCTIONAL BLOCK DIAGRAM
10
Y/G
10
CB/B
10
CR/R
Revision Date: August 1997
Document No. 521 - 33 - 04
GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3
Tel. +1 (905) 632-2996 Fax. +1 (905) 632-5946 E-mail: [email protected]
www.gennum.com
PIN DESCRIPTION
PIN NO.
SYMBOL
DESCRIPTION
10, 18, 27, 36, 44, 52,
61, 68
VDD ±5 V ± 5% power supply.
1, 6, 7, 9, 26, 30, 35,
40, 43, 60, 64
GND
Ground.
3
SCAN_EN
Set Low.
8, 11-17, 19, 20
SI9..0
Input Data Port: Input data port with internal pull-downs. Input data is assumed to be a
multiplexed stream of CBYCR [Y] CB..., where [Y] denotes an isolated Luminance sample.
SI9 is the Most Significant Bit and SI0 is the Least Significant Bit.
4 OE Output Enable: Active low input with internal pull-up. When OE is high, the output data ports
are in high impedance state.
59-53, 51-49
SOA9..0
Output Data Port A: Depending on device configuration, SOA9..0 may output over-sampled
Y or G video. SOA9 is the Most Significant Bit and SOA0 is the Least Significant Bit.
48-45, 42, 41, 39-37,
34
SOB9..0
Output Data Port B: Depending on device configuration, SOB9..0 may output over-sampled
CB or B video. SOB9 is the Most Significant Bit and SOB0 is the Least Significant Bit.
33-31, 29, 28, 25-21
SOC9..0
Output Data Port C: Depending on device configuration, SOC9..0 may output over-sampled
CR or R video. SOC9 is the Most Significant Bit and SOC0 is the Least Significant Bit.
2 CLK System Clock: All timing information relative to rising edge of clock.
5
SYNC
Synchronization: Control signal input with internal pull-up. This input is used to synchronize
the incoming data by holding SYNC high on clock period N and low on clock period N+1
when the first CB sample is presented to the SI9..0 inputs. SYNC may be held low until re-
synchronization is desired or may be toggled at every occurrence of a CB sample.
65 SELECT_MATRIX Select Color Space Conversion: Control signal input with internal pull-down.
SELECT_MATRIX is used to enable and disable the internal YCBCR to RGB color space
converter. Color space conversion is enabled while SELECT_MATRIX is high and is
disabled while SELECT_MATRIX is low.
66
BYPASS
Bypass SIN X/X Correction: Control signal input with internal pull-up. When BYPASS is
high, SIN X/X correction for the three output channels is enabled. While BYPASS is low, SIN
X/X correction is by-passed.
63
SETUP
Setup: Control signal input with internal pull-down. SETUP is used to enable and disable
setup insertion in the Luminance channel.
62
CONVERT
Two's Complement Conversion: Control signal input with internal pull-up. While CONVERT
is high, SOB9..0 and SOC9..0 output signed (two’s complement) digital data. While
CONVERT is low, SOB9..0 and SOC9..0 output unsigned (offset binary) data. When
operating in RGB output mode, the CONVERT pin is over-ridden and both SOB9..0 and
SOC9..0 output unsigned digital data. SOA9..0 outputs unsigned digital data in all operating
modes.
67
RND10/8
Output Rounding: Control signal input with internal pull-up. RND10/8 selects rounding to
10 bit resolution per channel when high and rounding to 8 bit resolution per channel when
low.
521 - 33 - 04
2
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GF9103 converter
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