GS1560A/GS1561 Data Sheet
The EDH_FLAG register may be read by the host interface at any time during the
received frame except on the lines defined in SMPTE RP165 where these flags are
updated.
NOTE 1: By programming the ANC_TYPE1 register (005h) with the DID word for
EDH ancillary packets, the application layer may detect a high-to-low transition on
either the YANC or CANC output pin of the GS1560A/GS1561 to determine (a)
when EDH packets have been received by the device, and (b) when the
EDH_FLAG register can be read by the host interface. See Ancillary Data
Detection and Indication on page 48 for more information on ancillary data
detection and indication.
NOTE 2: The bits of the EDH_FLAG register are sticky and will not be cleared by
a read operation. If the GS1560A/GS1561 is decoding a source containing EDH
packets, where EDH flags may be set, and the source is replaced by one without
EDH packets, the EDH_FLAG register will not be cleared.
NOTE 3: The GS1560A/GS1561 will detect EDH flags, but will not update the flags
if an EDH CRC error is detected. Gennum's GS1532 Multi-Rate Serializer allows
the host to individually set EDH flags.
Table 3-15: Host Interface Description for EDH Flag Register
Register
Name
Bit
Name
Description
R/W
Default
EDH_FLAG
Address: 003h
15
14
13
12
11
10
9
–
Not Used.
–
–
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
ANC-UES out
ANC-IDA out
ANC-IDH out
ANC-EDA out
ANC-EDH out
FF-UES out
FF-IDA out
FF-IDH out
FF-EDA out
FF-EDH out
AP-UES out
AP-IDA out
AP-IDH out
AP-EDA out
AP-EDH out
Ancillary Unknown Error Status Flag.
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Ancillary Internal device error Detected Already Flag.
Ancillary Internal device error Detected Here Flag.
Ancillary Error Detected Already Flag.
Ancillary Error Detected Here Flag.
Full Field Unknown Error Status Flag.
8
Full Field Internal device error Detected Already Flag.
Full Field Internal device error Detected Here Flag.
Full Field Error Detected Already Flag.
7
6
5
Full Field Error Detected Here Flag.
4
Active Picture Unknown Error Status Flag.
Active Picture Internal device error Detected Already Flag.
Active Picture Internal device error Detected Here Flag.
Active Picture Error Detected Already Flag.
Active Picture Error Detected Here Flag.
3
2
1
0
27360 - 8 September 2005
64 of 80
GENNUM [ GENNUM CORPORATION ]
