Vdp Ancillary Data Output - Analog Devices Advantiv ADV7604 Hardware Manual

ADAP2_GEM2X_SWING_EN , VDP Map, Address 0x9B, [5]
Function
ADAP2_GEM2X_SWING_EN
0
1
ADAP2_VITC_SWING_EN , VDP Map, Address 0x9B, [6]
Function
ADAP2_VITC_SWING_EN
0
1
ADAP2_TTXT_SWING_EN , VDP Map, Address 0x9B, [7]
Function
ADAP2_TTXT_SWING_EN
0
1

11.5 VDP Ancillary Data Output

Reading the data back via I
example, Teletext. An alternative is to place the sliced data in a packet in the line blanking of the
digital output CCIR656 stream. This is available for all standards sliced by the VDP module.
When VBI data is sliced on a given line, the corresponding ancillary data packet is placed
immediately after the next EAV code that occurs at the output, that is, sliced data from multiple lines
are not buffered up and then emitted in a burst. Note that the line number on which the packet is
placed differs from the line number on which the data was sliced due to the vertical delay through the
comb filters.
The user can enable or disable the insertion of VDP decoded results into the 656 ancillary streams by
using the ADF_EN bit.
ADF_EN (VDP) , VDP Map, Address 0x62, [7]
This bit enables ancillary data output through the 656 stream.
Function
ADF_ENABLE
0
1
The user can select the Data Identification Word (DID) DID6_2[4:0] and the Secondary Data
Identification SDID7_2[5:0] by programming the VDP_ADF_CONFIG_1 and
VDP_ADP_CONFIG_2 registers respectively.
Rev. F August 2010
Description
Disables adaptive slice level generator for GEM2X standard
Enables adaptive slice level generator for GEM2X standard
Description
Disables adaptive slice level generator for VITC standard
Enables adaptive slice level generator for VITC standard
Description
Disables adaptive slice level generator for TTXT standard
Enables adaptive slice level generator for TTXT standard
2
C may not be feasible for VBI data standards with high data rates, for
Description
Disables insertion of VBI decoded data into ancillary 656 stream
Enables insertion of VBI decoded data into ancillary 656 stream
332
ADV7604