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| 型號： | GS9090-CNE3 |
| 廠商： | Gennum Corporation |
| 英文描述： | GS9090 GenLINX-R III 270Mb/s Deserializer for SDI and DVB-ASI |
| 中文描述： | GS9090 GenLINX - R的第三270Mb / s的SDI和DVB解串器，意大利航天局 |
| 文件頁數(shù)： | 41/70頁 |
| 文件大?。?/td> | 696K |
| 代理商： | GS9090-CNE3 |
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GS9090 Data Sheet
28201 - 1
July 2005
41 of 70
If the received video format does not correspond to 525 or 625 digital component
video standards as determined by the flywheel pixel and line counters, then one of
two schemes for determining the EDH calculation ranges will be employed:
1. Ranges will be based on the line and pixel ranges programmed by the host
interface; or
2. In the absence of user-programmed calculation ranges, ranges will be
determined from the received TRS timing information.
The registers available to the host interface for programming EDH calculation
ranges include active picture and full field line/pixel start and end positions for both
fields.
Table 3-13
shows the relevant registers, which default to '0' after a device
reset.
If any or all of these register values are zero, then the EDH CRC calculation ranges
will be determined from the flywheel generated timing. The first active and full field
pixel will always be the first pixel after the SAV TRS code word. The last active and
full field pixel will always be the last pixel before the start of the EAV TRS code
words.
Table 3-13: Host Interface Description for EDH Calculation Range Registers
Register Name
Bit
Name
Description
R/W
Default
AP_LINE_START_F0
Address: 15h
15-11
–
Not Used
–
–
10-0
AP_LINE_START_F0[10:0]
Field 0 Active Picture start line data used
to set EDH calculation range outside of
SMPTE RP 165 values.
R/W
0
AP_LINE_END_F0
Address: 16h
15-11
–
Not Used
–
–
10-0
AP_LINE_END_F0[10:0]
Field 0 Active Picture end line data used
to set EDH calculation range outside of
SMPTE RP 165 values.
R/W
0
AP_LINE_START_F1
Address: 17h
15-11
–
Not Used
–
–
10-0
AP_LINE_START_F1[10:0]
Field 1 Active Picture start line data used
to set EDH calculation range outside of
SMPTE RP 165 values.
R/W
0
AP_LINE_END_F1
Address: 18h
15-11
–
Not Used
–
–
10-0
AP_LINE_END_F1[10:0]
Field 1 Active Picture end line data used
to set EDH calculation range outside of
SMPTE RP 165 values.
R/W
0
FF_LINE_START_F0
Address: 19h
15-11
–
Not Used
–
–
10-0
FF_LINE_START_F0[10:0]
Field 0 Full Field start line data used to
set EDH calculation range outside of
SMPTE RP 165 values.
R/W
0
FF_LINE_END_F0
Address: 1Ah
15-11
–
Not Used
–
–
10-0
FF_LINE_END_F0[10:0]
Field 0 Full Field end line data used to
set EDH calculation range outside of
SMPTE RP 165 values.
R/W
0
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