TM
MultiGEN GF9105A
Component Digital Transcoder
DATA SHEET
FEATURES
DEVICE OVERVIEW
• drop in replacement for the GF9105 with lower power
and increased functionality
The GF9105A is a drop in replacement for the GF9105 with
lower power and increased functionality. This increased
functionality gives the user the option of having HVF output
signals and the option of using a low frequency clock when
operating with non-multiplexed input and output data. The
GF9105A is a flexible VDSP engine capable of performing a
variety of format conversions. The flexible architecture of
the GF9105A also allows the user to perform a wide range
of DSP functions that require a general 3X3 multiplier
structure and/or high performance 1:2 interpolation and 2:1
decimation filters. Device configuration is selected by
• new mode for HVF output
• new mode for using low frequency clocks with non-
multiplexed I/O data
• optimized HOST IF control signals for ensured shared
bus compatibility
• multiple format conversions from one device
4:2:2:4 <-> 4:4:4:4
4:2:2:4 <-> R/G/B/KEY
4:2:2:4 <-> Y/U/V/KEY
Y/U/V/KEY <-> R/G/B/KEY
4:4:4:4 <-> R/G/B/KEY
4:4:4:4 <-> Y/U/V/KEY
writing
configuration words through an asynchronous
parallel interface (HOST IF).
The GF9105A accepts either multiplexed or non-
multiplexed input data and may produce either multiplexed
or non-multiplexed output data. External H, V and F inputs
allow for the insertion of TRS words into multiplexed output
data streams.
• ITU-R-601 compliant interpolation/decimation filters
• supports both single link 4:4:4:4 (SMPTE RP174) and
dual link 4:4:4:4 (SMPTE RP175) compliant I/O
All interpolation and decimation filtering required for ITU-R-
601 compliant 4:2:2:4 <-> 4:4:4:4 sample rate conversions
has been integrated into the GF9105A. In addition, all input
and output offset adjustments required for transparent
conversions between the Y/U/V and R/G/B color spaces
have been included within the GF9105A.
• transparent conversions between Y/U/V and R/G/B
color spaces.
• fully programmable 3X3 Color Space Converter (CSC)
• 13 bit Color Space Converter coefficients
• 13 bit KEY Channel scaling coefficient
The color space converter within the GF9105A has 13 bit
multiplier coefficients, has 13 bit output resolution,
maintains full precision throughout the 3X3 calculation and
has a true unity gain by-pass mode. Sufficient resolution is
maintained within the color space converter to ensure that
truly transparent Y/U/V <-> R/G/B conversions may be
achieved. A user programmable output clipper allows the
GF9105A to output a variety of word lengths to meet
specific system requirements.
• multiplexed and non-multiplexed I/O data
• bi-directional I/O data ports with tri-stating
• parallel HOST IF for reading and writing multiplier
coefficients and device configuration words
• single +5V power supply.
ORDERING INFORMATION
PART NUMBER
GF9105ACQQ
PACKAGE
The GF9105A is packaged in a 160 pin MQFP package,
operates from a single +5V supply.
160 Pin MQFP
13
13
13
11
13
Y/G, CB/B, CR/R, KEY OR
Y/G, CB/B, CR/R, OR Y/G
Y/G, CB/B, CR/R, KEY OR
Y/G
Y/G
Y/G
Y/G
Y/G
Y/G
Y/G
Y/G, CB/B, CR/R, OR Y/G
3 X 3
MATRIX
MULTIPLIER
INT
DEC
DEC
13
13
H_BLANK
AND
INPUT
OFFSET
ADJUST
DEMUX
4:4:4:4
OR
XX OR CB/B
XX OR CR/R
CB/B OR XX
CB/B
CR/R
CB/B
CR/R
CB/B
CR/R
CB/B
OUTPUT
OFFSET
ADJUST
CB/B
CR/R
OUTPUT
MULTIPLEXER
OUTPUT
CLIP
CB/B
CR/R
CB/B
CR/R
INT
4:2:2:4
CR/R OR XX
CR/R
11
KEY SCALER
KEY OR KEY, CB/B, CR/R
KEY, CB/B, CR/R OR KEY
KEY
KEY
KEY
KEY
KEY
KEY
KEY
GENERAL FUNCTIONALITY OF GF9105A CORE
Revision Date: March 2000
Document No. 521 - 88 - 03
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: info@gennum.com
www.gennum.com
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