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GS1503 Datasheet

  • GS1503

  • HD Embedded Audio CODEC

  • 1181.23KB

  • 82頁

  • ETC

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GS1503
HD EMBEDDED AUDIO CODEC
DATA SHEET
FEATURES
鈥?complies with SMPTE 292M and SMPTE 299M
鈥?single chip HD embedded audio solution
鈥?operates as an embedded audio multiplexer or
demultiplexer
鈥?full support for 48kHz synchronous 24-bit audio
鈥?support for 8 channels of audio per device
鈥?cascadable architecture supports up to 16 audio channels
鈥?integrated scrambler/descrambler and word alignment
鈥?CRC error detection and insertion
鈥?audio control packet insertion and extraction
鈥?arbitrary data packet insertion and extraction
鈥?3.3V power supply with 5V tolerant I/O
鈥?144 pin LQFP package
APPLICATIONS
HD SDI Embedded Audio
ORDERING INFORMATION
PART NUMBER
PACKAGE
TEMPERATURE
DESCRIPTION
The GS1503 is a highly integrated, single chip solution for
embedding/extracting digital audio streams into and out of
high definition digital video signals. The GS1503 supports
insertion/extraction of 24-bit synchronous audio data with a
48kHz sample rate. Audio signals with different sample
rates may be converted to 48kHz by using audio sample
rate converters before or after the GS1503.
Each GS1503 supports all processing required for
embedding/extracting up to eight digital audio channels in
the horizontal ancillary data space of the video chroma
channel. Two GS1503鈥檚 can be cascaded for insertion/
extraction of up to 16 audio channels with no external glue
logic.
The GS1503 supports embedding/extracting of audio
control and arbitrary data packets in the horizontal ancillary
data space of the video luma channel. It also supports line
CRC detection and insertion.
The GS1503 supports HD video standards at 74.25MHz
and 74.25/1.001MHz rates. It has an on chip SMPTE
compliant scrambler/de-scrambler, and integrated word
alignment. Use the GS1503 with Gennum鈥檚 GS1545 or
GS1522 for two chip HD SDI receive or transmit solutions.
The GS1503 operates from a single 3.3V power supply with
5V tolerant I/O and is packaged in a 144 pin LQFP
package.
GS1503
GS1503-CFZ
144 pin LQFP
0擄C to 70擄C
DSCBYPASS
EXTH
EXTF
SCRBYPASS
VIN[19:0]
20
De-scrambler &
Word Alignment
20
20
TRS
Inserter
20
CRC Inserter &
Scrambler
20
VOUT[19:0]
VIDEO_DET
OPERATE
ERROR
CRC_ERR
VM[3:0]
4
Video Detection &
Synchronization
ANCI Timing
Generation
4
CPUADR[8:0]
CPUDAT[7:0]
CPUCS, CPUWE,
CPURE
PKT[7:0]
PKTEN
AIN1/2
AIN3/4
AIN5/6
AIN7/8
WCINA/B
9
8
3
Host
Interface
Control
Packet
Mux
HOST INTERFACE
8
Arbitrary
Packet
Mux
PKTENO
HOST INTERFACE
4
Audio
Input
Interface
2
AM[1:0]
MUTE
Audio
Packet
Mux
2
MULTIPLEX MODE BLOCK DIAGRAM
Revision Date: April 2002
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
Document No. 15879 - 1

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