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參數(shù)資料
| 型號： | GS1532-CF |
| 廠商： | Gennum Corporation |
| 英文描述： | GS1532 HD-LINX-TM II Multi-Rate Serializer |
| 中文描述： | GS1532的HD - LINX進程，商標(biāo)第二多速率串行器 |
| 文件頁數(shù)： | 34/52頁 |
| 文件大?。?/td> | 512K |
| 代理商： | GS1532-CF |
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GS1532 Data Sheet
21498 - 6
June 2005
34 of 52
3.6.3.1 SMPTE 352M Payload Identifier Insertion
The GS1532 can generate and insert SMPTE 352M payload identifier ancillary
data packets into the data stream, based on information programmed into the host
interface.
When this feature is enabled, the device will automatically generate the ancillary
data preambles, (DID, SDID, DBN, DC), and calculate the checksum. The SMPTE
352M packet will be inserted into the data stream according to the line numbers
programmed in the LINE_352M registers (
Table 3-6
).
The insertion process will only take place if one or more of the four
VIDEO_FORMAT registers (
Table 3-7
) have been programmed with non-zero
values. In addition, the GS1532 requires the 352M_INS bit of the
IOPROC_DISABLE register be set LOW.
NOTE 1: For the purpose of determining the line and pixel position for insertion, the
GS1532 will differentiate between PsF and interlaced formats by interrogating bits
14 and 15 of the VIDEO_FORMAT_A register.
The packets will be inserted immediately after the EAV word in SD video streams
and immediately after the line-based CRC word in the Y channel of HD video
streams.
NOTE 2: It is the responsibility of the user to ensure that there is sufficient space
in the horizontal blanking interval for the insertion of the SMPTE 352M packets.
If there are other ancillary data packets present, the SMPTE 352M packet will be
inserted in the first available location in the horizontal ancillary space. Ancillary
data must be adjacent to the EAV in SD streams or to the line based-CRC in HD
streams. Where there is insufficient space available, the 352M packets will not be
inserted.
Table 3-6: Host Interface Description for SMPTE 352M Packet Line Number Insertion Registers
Register Name
Bit
Name
Description
R/W
Default
LINE_352M_f1
Address: 01Bh
15-11
–
Not Used.
–
–
10-0
LINE_0_352M[10:0]
Line number where SMPTE352M packet is inserted
in field 1.
R/W
0
LINE_352M_f2
Address: 01Ch
15-11
–
Not Used.
–
–
10-0
LINE_1_352M[10:0]
Line number where SMPTE352M packet is inserted
in field 2.
R/W
0
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