Av Code Block - Analog Devices Advantiv ADV7604 Hardware Manual

• ADV7604 employs sequencers for the offset values that prohibit intermediate wrong values
to be applied.
2
• The I
C sequencer treats the three offset values as separate entities. To update all three offset
values, a single sweep of I
sufficient.
A_OFFSET[9:0] Channel A Offset , CP Map, Address 0x77, [5:0]; Address 0x78, [7:4]
Function
A_OFFSET[9:0]
xx xxxx xxxx
0x3FF
Note: To change the A_OFFSET[9:0] value, register 0x77 and 0x78 must be written to in this order
2
with no other I C access in between.
B_OFFSET[9:0] Channel B Offset , CP Map, Address 0x78, [3:0]; Address 0x79, [7:2]
Function
B_OFFSET[9:0]
xx xxxx xxxx
0x3FF
Note: To change the B_OFFSET[9:0] value, registers 0x78 and 0x79 must be written to in this
2
order with no other I
C_OFFSET[9:0] Channel C Offset , CP Map, Address 0x79, [1:0]; Address 0x7A, [7:0]
Function
C_OFFSET[9:0]
xx xxxx xxxx
0x3FF
Note: To change the C_OFFSET[9:0] value, registers 0x79 and 0x7A must be written to in this
2
order with no other I

10.5 AV Code Block

The AV Code block is used to insert AV codes into the video data stream. The codes follow the
standards outlined in ITU-R BT.656 - 4.
The following functions are supported by this block:
• The AV Code insertion can be enabled or disabled.
• Data between the end of active video (EAV) and the start of active video (SAV) can be
blanked, for example, overwritten with default values. This function can be enabled or
disabled. In addition, the default blanking value can be set for RGB or YPbPr.
Rev. F August 2010
2
C writes to the CP Map, registers 0x77, 0x78, 0x79, and 0x7A is
Description
Adds value to digital data.
Double buffering and I
Default value
Description
Adds value to digital data. Double buffering and I
by default.
Default value.
C access in between.
Description
Adds value to digital data. Double buffering and I
by default.
Default value.
C access in between.
2
C sequencing applies by default.
242
ADV7604
2
C sequencing applies
2
C sequencing applies