參數(shù)資料
型號(hào)： GS1503-CFZ
廠商： Gennum Corporation
元件分類(lèi)： Codec
英文描述： HD EMBEDDED AUDIO CODEC
中文描述： 高清嵌入式音頻編解碼
文件頁(yè)數(shù)： 12/83頁(yè)
文件大小： 815K
代理商： GS1503-CFZ
15879 - 4
12 of 83
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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
b
/C
r
input with TRS and Line Numbers
8-bit Y and C
b
/C
r
input with TRS and Line Numbers
10-bit or 8-bit Y and C
b
/C
r
input without TRS and Line
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
b
/C
r
output
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 as an auxiliary data signal for proprietary
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.
Table 2: Supported Video Standards
VM [3:0]
INPUT FORMAT
REFERENCE SMPTE DOCUMENT
SMPTE 292M LEVEL
1110b
1035i (30 & 30/1.001 Hz)
260M
A, B
1100b
1080i (25 Hz)
295M
C
1000b
1080i/1080sF (30 & 30/1.001 Hz)
274M, RP211
D, E
1010b
1080i/1080sF (25 Hz)
274M, RP211
F
1111b
1080sF (24 & 24/1.001 Hz)
RP211
0010b
1080p (30 & 30/1.001 Hz)
274M
G, H
0100b
1080p (25 Hz)
274M
I
0110b
1080p (24 & 24/1.001 Hz)
274M
J, K
0000b
720p (60 & 60/1.001 Hz)
296M
L, M
0001b
720p (30 & 30/1.001 Hz)
296M
0011b
720p (50 Hz)
296M
0101b
720p (25 Hz)
296M
0111b
720p (24 & 24/1.001 Hz)
296M
All other settings are reserved
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