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 GS1559 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 40 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 GS1559 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 GS1559 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 4-15: 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.
–
R
R
R
R
R
R
R
R
R
R
R
R
–
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
Ancillary Unknown Error Status flag.
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.
Full Field Internal device error Detected Already flag.
Full Field Internal device error Detected Here flag.
Full Field Error Detected Already flag.
Full Field Error Detected Here flag.
8
7
6
5
4
Active Picture Unknown Error Status flag.
3
Active Picture Internal device error Detected Already
flag.
2
1
0
AP-IDH out
AP-EDA out
AP-EDH out
Active Picture Internal device error Detected Here flag.
Active Picture Error Detected Already flag.
Active Picture Error Detected Here flag.
R
R
R
0
0
0
GS1559 HD-LINX™ II Multi-Rate Deserializer with
Loop-Through Cable Driver
Data Sheet
56 of 71
30572 - 8
July 2008
GENNUM [ GENNUM CORPORATION ]
