Data Sheet
ADV7180
Bits
(Shading Indicates Default State)
Subaddress
Register
Bit Description
7
6
5
4
3
2
1
0
Comments
LQFP
Notes
0xC4
ADC Switch 2
MUX2[2:0]; manual
LFCSP
MAN_MUX_EN = 1
muxing control for MUX2;
this setting controls which
input is routed to the ADC
for processing
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
No connect
No connect
AIN2
No connect
No connect
No connect
No connect
No connect
AIN3
No connect
No connect
AIN5
AIN6
No connect
No connect
No connect
Reserved
0
0
0
0
0
1
MAN_MUX_EN; enable
manual setting of the
input signal muxing
0
1
Disable
Enable
This bit must be set
to 1 for manual
muxing
0xDC
0xDD
Letterbox
Control 1
LB_TH[4:0]; sets the
threshold value that
determines if a line is
black
1
1
0
0
0
0
Default threshold for the detection of
black lines
01101 to 10000—increase threshold,
00000 to 01011—decrease threshold
Reserved
1
0
0
1
1
0
Set as default
Letterbox
Control 2
LB_EL[3:0]; programs the
end line of the activity
window for LB detection
(end of field)
1
LB detection ends with the last line of
active video on a field, 1100b: 262/525
LB_SL[3:0]; programs the
start line of the activity
window for LB detection
(start of field)
0
x
Letterbox detection aligned with the
start of active video, 0100b: 23/286 NTSC
0xDE
0xDF
0xE1
ST Noise
Readback 1
(read only)
ST_NOISE[10:8]
ST_NOISE_VLD
x
x
x
x
x
x
x
x
When = 1, ST_NOISE[10:0] is valid
ST Noise
Readback 2
(read only)
ST_NOISE[7:0]
x
x
x
SD Offset Cb
SD_OFF_Cb[7:0]; adjusts
the hue by selecting the
offset for the Cb channel
0
1
1
0
1
1
0
1
1
0
1
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
0
1
0
0
1
0
0
1
0
0
1
0
0
0
1
0
0
1
0
0
1
0
0
1
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
0
1
0
0
1
0
0
1
0
0
1
1
−312 mV offset applied to the Cb channel
0 mV offset applied to the Cb channel
+312 mV offset applied to the Cb channel
−312 mV offset applied to the Cr channel
0 mV offset applied to the Cr channel
+312 mV offset applied to the Cr channel
Gain on Cb channel = −42 dB
0xE2
0xE3
0xE4
0xE5
SD Offset Cr
SD_OFF_Cr[7:0]; adjusts
the hue by selecting the
offset for the Cr channel
SD Saturation Cb
SD Saturation Cr
SD_SAT_Cb[7:0]; adjusts
the saturation by affecting
gain on the Cb channel
Gain on Cb channel = 0 dB
Gain on Cb channel = +6 dB
SD_SAT_Cr[7:0]; adjusts
the saturation by affecting
gain on the Cr channel
Gain on Cr channel = −42 dB
Gain on Cb channel = 0 dB
Gain on Cb channel = +6 dB
NTSC V bit
begin
NVBEG[4:0]; number of
lines after lCOUNT rollover
to set V high
NTSC default (ITU-R BT.656)
NVBEGSIGN
0
1
Set to low when manual programming
Not suitable for user programming
No delay
NVBEGDELE; delay V bit
going high by one line
relative to NVBEG (even
field)
0
1
Additional delay by one line
NVBEGDELO; delay V bit
going high by one line
relative to NVBEG (odd
field)
0
1
No delay
Additional delay by one line
Rev. G | Page 95 of 120
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