Analog Devices ADV7181BCP Manual page 87

Subaddress Register
0xF4 Drive
Strength
0xF8 IF Comp
Control
0xF9 VS Mode
Control
Downloaded from Elcodis.com electronic components distributor
Bit Description
DR_STR_S[1:0]. Select the drive
strength for the Sync output signals.
DR_STR_C[1:0]. Select the drive
strength for the Clock output signal.
DR_STR[1:0]. Select the drive
strength for the data output signals.
Can be increased or decreased for
EMC or crosstalk reasons.
Reserved.
IFFILTSEL[2:0]. IF filter selection for
Pal and NTSC.
Reserved.
EXTEND_VS_MAX_FREQ.
EXTEND_VS_MIN_FREQ.
VS_COAST_MODE[1:0].
Reserved.
Bits
7 6 5 4 3 2 1 0
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
x x
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
0 0 0 0 0
0
1
0
1
0 0
0 1
1 0
1 1
0 0 0 0
Rev. B | Page 87 of 100
ADV7181B
Comments Notes
Low drive strength (1x)
Medium-low drive
strength (2x)
Medium-high drive
strength (3x)
High drive strength (4x)
Low drive strength (1x)
Medium-low drive
strength (2x)
Medium-high drive
strength (3x)
High drive strength (4x)
Low drive strength (1x)
Medium-low drive
strength (2x)
Medium-high drive
strength (3x)
High drive strength (4x)
No delay
Bypass mode 0 dB.
2 MHz 5 MHz NTSC filters.
−3 dB −2 dB
−6 dB
+3.5 dB
−10 dB
+5 dB
Reserved
3 MHz 6 MHz PAL filters.
−2 dB
+2 dB
−5 dB
+3 dB
−7 dB
+5 dB
Limit maximum Vsync
frequency to 66.25 Hz
(475 lines/frame)
Limit maximum Vsync
frequency to 70.09 Hz
(449 lines/frame)
Limit minimum Vsync
frequency to 42.75 Hz
(731 lines/frame)
Limit minimum Vsync
frequency to 39.51 Hz
(791 lines/frame)
Auto coast mode This value sets up
the output coast
50 Hz coast mode
frequency.
60 Hz coast mode
Reserved