GS1503-CFZ Gennum Corp., GS1503-CFZ Datasheet - Page 12

• Manufacturer Part Number: GS1503-CFZ
• Description: HD EMBEDDED AUDIO CODEC
• Manufacturer: Gennum Corp.

DETAILED DESCRIPTION
1. MULTIPLEX MODE
1.1 FUNCTIONAL OVERVIEW
The GS1503 HD Embedded Audio CODEC fully supports
the multiplexing of Audio Data Packets, Audio Control
Packets and Arbitrary Data Packets as per SMPTE 291M
and 299M. The device can be configured to operate with all
video standards defined in SMPTE 292M, levels A through
M. The GS1503 also supports the 1080/24PsF, 25PsF and
30PsF video formats as described in SMPTE RP211.
The video input format can be one of the following
configurations:
10-bit Y and C
8-bit Y and C
10-bit or 8-bit Y and C
Numbers (GS1503 will insert TRS and Line Numbers based
on EXTF and EXTH inputs)
20-bit scrambled input
The video output format can be one of the following
configurations:
20-bit scrambled output
10-bit Y and C
Table 2: Supported Video Standards
VM [3:0]
1110b
1100b
1000b
1010b
1111b
0010b
0100b
0110b
0000b
0001b
0011b
0101b
0111b
b
/C
b
b
/C
/C
r
r
input with TRS and Line Numbers
r
input with TRS and Line Numbers
output
1035i (30 & 30/1.001 Hz)
1080i (25 Hz)
1080i/1080sF (30 & 30/1.001 Hz)
1080i/1080sF (25 Hz)
1080sF (24 & 24/1.001 Hz)
1080p (30 & 30/1.001 Hz)
1080p (25 Hz)
1080p (24 & 24/1.001 Hz)
720p (60 & 60/1.001 Hz)
720p (30 & 30/1.001 Hz)
720p (50 Hz)
720p (25 Hz)
720p (24 & 24/1.001 Hz)
b
/C
r
input without TRS and Line
INPUT FORMAT
All other settings are reserved
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REFERENCE SMPTE DOCUMENT
Up to a maximum of 8 channels of 48kHz digital audio can
be multiplexed per device. The audio input format can be
selected as either AES/EBU, or one of two serial audio data
input modes. A maximum of 16 channels of audio can be
multiplexed by serially cascading two devices.
Audio control packets, as defined in SMPTE 299M, can also
be multiplexed to provide information to receivers about the
nature of the embedded audio data. The contents of the
audio control packet can be programmed via the Host
Interface.
The GS1503 will also multiplex arbitrary data packets as
defined in SMPTE 291M. The arbitrary data packets can
serve
applications. The GS1503 can be configured to multiplex
arbitrary data packets, input via the Host Interface or using
dedicated external pins. Up to a maximum of 255 8-bit
words can be multiplexed (excluding Ancillary Data Flags
and Checksum).
To use the GS1503 in Multiplex Mode, set the MUX/DEMUX
external pin LOW.
1.2 VIDEO STANDARD
The video standard is selected from the VM[3:0] external
pins or VM[3:0] bits 3-0 in Host Interface register 000h. To
configure the video standard via the Host Interface,
VM_SEL bit 7 in Host Interface register 000h must be set
HIGH. The GS1503 will default to the VM[3:0] external pin
setting. The supported video standards are listed in Table 2.
274M, RP211
274M, RP211
as
RP211
260M
295M
274M
274M
274M
296M
296M
296M
296M
296M
an
auxiliary
data
SMPTE 292M LEVEL
signal
G, H
L, M
A, B
D, E
J, K
C
F
I
for
proprietary
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