GS2962 Datasheet, PDF (43/82 Pages) Gennum Corporation – Integrated Narrow-Bandwidth PLL

For HD formats, the stream into which the ancillary data is to be inserted (Luma or
Chroma) is also programmed in these register addresses.
The non-zero video line numbers on which to insert the ancillary data, the ancillary data
type (HANC or VANC), and the total number of words to insert per line must be provided
via the host interface (see Section 4.12). At power up, or after system reset, all ancillary
data insertion line numbers and total number of words default to zero.
If the total number of Data Words specified per line exceeds 128 only the first 128 Data
Words will be inserted, the rest will be ignored.
The data words are programmed as two 8-bit values per address, starting at host
interface address 040h in the ANC_PACKET_BANK register (see Table 4-16).
The device automatically converts the provided 8-bit Data Words into the 10-bit data,
formatted according to SMPTE 291M prior to insertion.
4.7.1.2 Concatenated Operating Mode
In Concatenated mode, it is possible to insert up to 512 8-bit horizontal or vertical
ancillary Data Words on one line per video frame. Concatenated Line mode can be
selected by setting the ANC_INS_MODE bit in the host interface HIGH. By default, at
power up, Separate Line mode is selected.
In Concatenated mode, only the FIRST_LINE registers of the host interface need to be
programmed (addresses 025h and 026h). See Table 4-16.
The non-zero video line number on which to insert the ancillary data, the ancillary data
type (HANC or VANC), and the total number of words to insert must be provided via the
host interface. At power up, or after system reset, the ancillary data insertion line
number and total number of words default to zero.
If the total number of data words specified exceeds 512 only the first 512 Data Words
will be inserted, the rest will be ignored.
The data words are programmed as two 8-bit values per address, starting at host
interface address 040h in the ANC_PACKET_BANK register. See Table 4-16.
The device automatically converts the provided 8-bit data words into the 10-bit data
formatted according to SMPTE 291M prior to insertion.
4.7.2 3G ANC Insertion
4.7.2.1 Level A Mode
When operating in 3G (RATE _SEL0 = LOW, RATE_SEL1 = HIGH) Level A mode, the
GS2962 inserts VANC or HANC data packets into Data Stream One (default) or Data
Stream Two.
The data stream for insertion is selectable for each of the ANC insertion lines selected via
the host interface. Data Stream One is selected when the STREAM_TYPE_1 bit in the
register associated with the insertion line is set LOW (default). Data Stream Two is
selected when the STREAM_TYPE_1 bit associated with the insertion line is set HIGH.
GS2962 3G/HD/SD-SDI Serializer with Complete
SMPTE Video Support
Data Sheet
48005 - 7
October 2010
43 of 82