ADV7181BCP Analog Devices Inc, ADV7181BCP Datasheet - Page 42

• Manufacturer Part Number: ADV7181BCP
• Description: IC VIDEO DECODER NTSC 64-LFCSP
• Manufacturer: Analog Devices Inc
• Type: Video Decoderr

Specifications of ADV7181BCP

• Applications: Recorders, Set-Top Boxes
• Voltage - Supply, Analog: 3.15 V ~ 3.45 V
• Voltage - Supply, Digital: 1.65 V ~ 2 V
• Mounting Type: Surface Mount
• Package / Case: 64-LFCSP
• Adc/dac Resolution: 9b
• Screening Level: Industrial
• Package Type: LFCSP EP
• Pin Count: 64
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With: EVAL-ADV7181BEB - BOARD EVALUATION FOR ADV7181
• Lead Free Status / RoHS Status: Compliant, Contains lead / RoHS non-compliant

ADV7181
VS and FIELD Configuration
The following controls allow the user to configure the behavior
of the VS and FIELD output pins, as well as the generation of
embedded AV codes:
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NEWAVMODE New AV Mode, Address 0x31 [4]
Table 100. NEWAVMODE Function
NEWAVMODE
0
1 (default)
o
o
o
o
o
o
ADV encoder-compatible signals via NEWAVMODE
PVS, PF
HVSTIM
VSBHO, VSBHE
VSEHO, VSEHE
For NTSC control:
For PAL control:
NVBEGDELO, NVBEGDELE, NVBEGSIGN,
NVBEG[4:0]
NVENDDELO, NVENDDELE, NVENDSIGN,
NVEND[4:0]
NFTOGDELO, NFTOGDELE, NFTOGSIGN,
NFTOG[4:0]
PVBEGDELO, PVBEGDELE, PVBEGSIGN,
PVBEG[4:0]
PVENDDELO, PVENDDELE, PVENDSIGN,
PVEND[4:0]
PFTOGDELO, PFTOGDELE, PFTOGSIGN,
PFTOG[4:0]
Description
EAV/SAV codes generated to suit ADI
encoders. No adjustments possible.
Enable Manual Position of VSYNC, Field, and
AV codes using 0x34 to 0x37 and 0xE5 to 0xEA.
Default register settings are CCIR656
compliant; see Figure 20 for NTSC and
Figure 25 for PAL. For recommended manual
user settings, see Table 108 and Figure 21 for
NTSC; see Table 121 and Figure 26 for PAL.
Rev. B | Page 42 of 104
HVSTIM Horizontal VS Timing, Address 0x31 [3]
The HVSTIM bit allows the user to select where the VS signal is
asserted within a line of video. Some interface circuitry may
require VS to go low while HS is low.
Table 101. HVSTIM Function
HVSTIM
0 (default)
1
VSBHO VS Begin Horizontal Position Odd, Address 0x32 [7]
The VSBHO and VSBHE bits select the position within a line at
which the VS pin (not the bit in the AV code) becomes active.
Some follow-on chips require the VS pin to change state only
when HS is high/low.
Table 102. VSBHO Function
VSBHO
0 (default)
1
VSBHE VS Begin Horizontal Position Even, Address 0x32 [6]
The VSBHO and VSBHE bits select the position within a line at
which the VS pin (not the bit in the AV code) becomes active.
Some follow-on chips require the VS pin to change state only
when HS is high/low.
Table 103. VSBHE Function
VSBHE
0
1 (default)
VSEHO VS End Horizontal Position Odd, Address 0x33 [7]
The VSEHO and VSEHE bits select the position within a line at
which the VS pin (not the bit in the AV code) becomes active.
Some follow-on chips require the VS pin to change state only
when HS is high/low.
Table 104. VSEHO Function
VSEHO
0
1 (default)
Description
Start of line relative to HSE.
Start of line relative to HSB.
Description
VS pin goes high at the middle of a line of video
(odd field).
VS pin changes state at the start of a line (odd
field).
Description
VS pin goes high at the middle of a line of video
(even field).
VS pin changes state at the start of a line (even
field).
Description
VS pin goes low (inactive) at the middle of a line
of video (odd field).
VS pin changes state at the start of a line (odd
field).