adv7180 Analog Devices, Inc., adv7180 Datasheet - Page 87

• Manufacturer Part Number: adv7180
• Description: 10-bit, 4 X Oversampling Sdtv Video Decoder
• Manufacturer: Analog Devices, Inc.

Subaddress
0x2F
0x30
0x31
0x32
0x33
0x34
0x35
0x36
Register
Luma Gain
Control 1
Luma Gain
Control 2
VS/FIELD
Control 1
VS/FIELD
Control 2
VS/FIELD
Control 3
HS Position
Control 1
HS Position
Control 2
HS Position
Control 3
Bit Description
LMG[11:8]/LG[11:8]. In
manual mode, luma gain
control can be used to
program a desired manual
chroma gain. In auto mode,
it can be used to read
back the actual gain value
used.
Reserved.
LAGT[1:0]. Luma auto-
matic gain timing allows
adjustment of the luma
AGC tracking speed.
LMG[7:0]/LG[7:0]. Luma
manual gain lower eight
bits. See LMG[11:8]/
LG[11:8] for description.
Reserved.
HVSTIM. Selects where
within a line of video the
VS signal is asserted.
NEWAVMODE. Sets the
EAV/SAV mode.
Reserved.
Reserved.
VSBHE.
VSBHO.
Reserved.
VSEHE.
VSEHO.
HSE[10:8]. HS end allows
positioning of the HS
output within the video
line.
Reserved.
HSB[10:8]. HS begin
allows positioning of the
HS output within the
video line.
Reserved.
HSB[7:0] See above, using
HSB[10:0] and HSE[10:0],
users can program the
position and length of HS
output signal.
HSE[7:0] See above.
7
0
0
1
1
x
0
0
1
0
1
0
0
0
(Shading Indicates Default State)
6
0
1
0
1
x
0
0
1
0
1
0
0
0
Rev. B | Page 87 of 112
5
1
x
0
0
0
0
0
0
4
1
x
0
1
0
0
0
0
0
Bits
3
x
x
0
1
0
0
0
0
0
2
x
x
0
0
1
0
0
0
1
x
x
1
0
0
0
1
0
0
x
x
0
1
0
0
0
0
LAGC[1:0] settings decide in which
mode LMG[11:0] operates
Set to 1
Fast (TC = 0.2 sec)
Adaptive
LMG[11:0] = 1600d; gain is 1 in NTSC
LMG[11:0] = 1630d; gain is 1 in PAL
Set to default
Start of line relative to HSE
Start of line relative to HSB
EAV/SAV codes generated to suit
Analog Devices encoders
Manual VS/FIELD position controlled by
the 0x32, 0x33, and 0xE5 to 0xEA registers
Set to default
Set to default
VS goes high in the middle of the line
(even field)
VS changes state at the start of the line
(even field)
VS goes high in the middle of the line
(odd field)
VS changes state at the start of the line
(odd field)
Set to default
VS goes low in the middle of the line
(even field)
VS changes state at the start of the line
(even field)
VS goes low in the middle of the line
(odd field)
VS changes state at the start of the line
odd field
HS output ends HSE[10:0] pixels after
the falling edge of hsync
Set to 0
HS output starts HSB[10:0] pixels after
the falling edge of hsync
Set to 0
LQFP-64
Slow (TC = 2 sec)
Medium (TC = 1 sec)
Comments
LFCSP-40
Notes
Only has an effect
if LAGC[1:0] is set
to auto gain (001,
010, 011,or 100)
Minimum value
NTSC 2048 (G = 0.5)
PAL 2048 (G = 0.5)
Maximum value
NTSC 4095 (G = 2)
PAL 4095 (G = 2)
HSE = Hsync end
HSB = Hsync begin
NEWAVMODE bit
must be set high
NEWAVMODE bit
must be set high
Using HSB and HSE
the user can
program the
position and
length of
the output hsync
ADV7180