Datasheet

Table Of Contents
ADV7188
Rev. A | Page 90 of 112
Bit
1
Address Register Bit Description 7 6 5 43210Comments Notes
0x31 Reserved. 0 1 0 Set to default
Vsync Field
Control 1
0 Start of line relative to HSE HSE = hsync end.
HVSTIM. This bit selects where within a line of
video the VS signal is asserted.
1 Start of line relative to HSB HSB = hsync begin.
NEWAVMODE. Sets the EAV/SAV mode. 0 EAV/SAV codes generated to suit
ADI encoders
1 Manual VS/FIELD position
controlled by Registers 0x32, 0x33,
and 0xE5 to 0xEA
Reserved. 0 0 0 Set to default
0x32 Reserved. 0 0 0 0 0 1 Set to default NEWAVMODE bit must be set high.
Vsync Field
Control 2
0 VS goes high in the middle of the
line (even field)
VSBHE.
1 VS changes state at the start of the
line (even field)
0 VS goes high in the middle of the
line (odd field)
VSBHO.
1 VS changes state at the start of the
line (odd field)
Reserved. 0 0 0 1 0 0 Set to default
0 VS goes low in the middle of the
line (even field)
VSEHE.
1 VS changes state at the start of the
line (even field)
0 VS goes low in the middle of the
line (odd field)
0x33 Vsync Field
Control 3
VSEHO.
1 VS changes state at the start of the
line (odd field)
NEWAVMODE bit must be set high.
HSE [10:8]. HS end. These bits allow the posi-
tioning of the HS output within the video line.
0 0 0 HS output ends HSE [10:0] pixels
after the falling edge of hsync
Using HSB and HSE, the user can
program the position and length of
the output hsync.
Reserved. 0 Set to 0
HSB [10:8]. HS begin. These bits allow the posi-
tioning of the HS output within the video line.
0 0 0 HS output starts HSB [10:0] pixels
after the falling edge of hsync
0x34 Hsync Position
Control 1
Reserved.
0 Set to 0
0x35 Hsync Position
Control 2
HSB [7:0]. Using HSB [10:0] and HSE [10:0]
(see Register 0x34), the user can program the
position and length of the HS output signal.
0 0 0 0 0 0 1 0
0x36 Hsync Position
Control 3
HSE [7:0]. See Registers 0x34 and 0x35. 0 0 0 0 0 0 0 0
0Invert polarity PCLK. Sets the polarity of LLC.
1 Normal polarity, as per the timing
diagrams (
Figure 2 to Figure
4
)
Sets the polarity of LLC on both LLC1
and LLC2.
Reserved. 0 0 Set to 0
0 Active high PF. Sets the FIELD polarity.
1 Active low
Reserved. 0 Set to 0
0 Active high PVS. Sets the VS polarity.
1 Active low
Reserved. 0 Set to 0
0 Active high
0x37 Polarity
PHS. Sets the HS polarity.
1 Active low
0x38 NTSC Comb Control 0 0 0 Adaptive 3-line, 3-tap luma
100Use low-pass notch
101Fixed luma comb (two lines) Top lines of memory.
110Fixed luma comb (three lines) All lines of memory.
YCMN [2:0]. Luma comb mode NTSC.
111Fixed luma comb (two lines) Bottom lines of memory.