Analog Devices Advantiv ADV7611 Hardware User's Manual page 137

Hardware User Guide
DIS_AUTO_PARAM_BUFF, Addr 44 (CP), Address 0xC9[0]
A control to disable the buffering of the timing parameters used for free run in HDMI mode.
Function
DIS_AUTO_PARAM_BUFF
0 (default)
1
It is also possible to custom program the resolution that the ADV7611 should expect for free run Mode 1 by programming the free-run
line length, line count max, and interlaced registers. Refer to the Free Run Mode section for the configuration of these registers.
Note: This mode (that is, DIS_AUTOPARAM_BUFFER = 1) does not support HDMI input with deep color.
Free Run Default Color Output
In the event of loss of input signal, the ADV7611 may enter free run and can be configured to output a default color rather than noise.
The default color values are given in Table 60.
The times at which the default colors are inserted can be set as follows:

Free run is forced: default colors are always output

Automatic free run mode: default colors are output when the system detects a loss of video signal
Table 60. Default Color Output Values (CP)
Mode
Default—GR
Default—COMP
Man. Override
CP_FORCE_FREERUN, Addr 44 (CP), Address 0xBF[0]
A control to force the CP to free run.
Function
CP_FORCE_FREERUN
0 (default)
1
CP_DEF_COL_AUTO, Addr 44 (CP), Address 0xBF[1]
A control to enable the insertion of default color when the CP free runs.
Function
CP_DEF_COL_AUTO
0
1 (default)
CP_DEF_COL_MAN_VAL, Addr 44 (CP), Address 0xBF[2]
A control to enable manual selection of the color used when the CP core free runs.
Function
CP_DEF_COL_MAN_VAL
0 (default)
1
Description
Buffer the last measured parameters in HDMI mode used to determine video resolution the part free runs into.
Disable the buffering of measured parameters in HDMI mode. Free run standard determined by
PRIM_MODE[3:0], VID_STD[5:0], and V_FREQ[2:0].
CP_DEF_COL_MAN_VAL
0
0
1
Description
Do not force the CP core free run.
Force the CP core to free run.
Description
Disable automatic insertion of default color
Output default colors when the CP free runs
Description
Uses default color blue
Outputs default colors as given in CP_DEF_COL_CHA, CP_DEF_COL_B and CP_DEF_COL_C
Signal
CH_A (G)
CH_B (R)
CH_C (B)
CH_A (Y)
CH_A (Pr)
CH_A (Pb)
CH_A
CH_B
CH_C
Rev. A | Page 137 of 184
UG-180
Value
0
0
135
d
35
d
114
d
212
d
4·DEF_COL_CHA[7:0]
4·DEF_COL_CHB[7:0]
4·DEF_COL_CHC[7:0]