GS1559 Gennum Corp., GS1559 Datasheet - Page 53

• Manufacturer Part Number: GS1559
• Description: GS1559 HD-LINX-TM II Multi-Rate Deserializer with Loop-Through Cable Driver
• Manufacturer: Gennum Corp.

Table 4-12: Host Interface Description for Error Mask Register
4.10.5.1 Video Standard Error Detection
4.10.5.2 EDH CRC Error Detection
Register Name
ERROR_MASK
Address: 01Ah
Bit
15-11
10
9
8
7
6
5
4
3
2
1
0
Name
–
VD_STD_ERR_MASK
FF_CRC_ERR_MASK
AP_CRC_ERR_MASK
LOCK_ERR_MASK
CCS_ERR_MASK
YCS_ERR_MASK
CCRC_ERR_MASK
YCRC_ERR_MASK
LNUM_ERR_MASK
SAV_ERR_MASK
EAV_ERR_MASK
If a mismatch between the received SMPTE 352M packets and the calculated
video standard occurs, the GS1559 will indicate a video standard error by setting
the VD_STD_ERR bit of the ERROR_STATUS register HIGH.
The GS1559 calculates Full Field (FF) and Active Picture (AP) CRC words
according to SMPTE RP165 in support of Error Detection and Handling packets in
SD signals.
These calculated CRC values are compared with the received CRC values. If a
mismatch is detected, the error is flagged in the AP_CRC_ERR and/or
FF_CRC_ERR bits of the ERROR_STATUS register. These two flags are shared
between fields 1 and 2.
The AP_CRC_ERR bit will be set HIGH when an active picture CRC mismatch has
been detected in field 1 or 2. The FF_CRC_ERR bit will be set HIGH when a full
field CRC mismatch has been detected in field 1 or 2.
EDH CRC errors will only be indicated when the device is operating in SD mode
(SD/HD = HIGH), and when the device has correctly received EDH packets.
SMPTE RP165 specifies the calculation ranges and scope of EDH data for
standard 525 and 625 component digital interfaces. The GS1559 will utilize these
standard ranges by default.
30572 - 4
July 2005
Description
Not Used.
Video Standard Error Flag Mask bit.
Full Field CRC Error Flag Mask bit.
Active Picture CRC Error Flag Mask bit.
Lock Error Flag Mask bit.
Chroma Checksum Error Flag Mask bit.
Luma Checksum Error Flag Mask bit.
Chroma CRC Error Flag Mask bit.
Luma CRC Error Flag Mask bit.
Line Number Error Flag Mask bit.
Start of Active Video Error Flag Mask bit.
End of Active Video Error Flag Mask bit.
GS1559 Data Sheet
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
–
Default
53 of 74
–
0
0
0
0
0
0
0
0
0
0
0