Figure 72: Cp Automatic Gain Controls - Analog Devices Advantiv ADV7604 Hardware Manual

0b1000 to 0b1110
HDMI_MODE
YES
INPUT
OP_656_RANGE GAIN
RANGE
0 (0-255 output) 1
0-255
(235-16)/255
1 (16-235 Y/RGB
= 0.859
16-240 CrCb)
255/(235-16)
0 (0-255 output)
= 1.164
16-235
1 (16-235 Y/RGB
1
16-240 CrCb)
AGC_MODE_MAN AGC Mode Manual Enable , CP Map, Address 0x73, [6]
Function
AGC_MODE_MAN
0
1
Rev. F August 2010
0-255 if HDMI_COLORSPACE = 0b001
16-235 if HDMI_COLORSPACE = 0b010
16-235 if HDMI_COLORSPACE = 0b011
0-255 if HDMI_COLORSPACE = 0b100
0-255 if HDMI_COLORSPACE = 0b101
0-255 if HDMI_COLORSPACE = 0b110
0-255 if HDMI_COLORSPACE = 0b111
Reserved
NO
AGC_MODE_MAN
NO
OP_656_RANGE
GAIN
(255-0+1)x16/1344
0 (0-255 output)
= 3.047
(235-16+1)x16/1344
1 (16-235 Y/RGB
= 2.617
16-240 CrCb)

Figure 72: CP Automatic Gain Controls

Description
Enables AGC based on SSPD decision
Gain operation controlled by GAIN_MAN
YES
GAIN_MAN
YES
YES
Set gain based on
A/B/C_GAIN[9:0
AGC
value
ACTIVE
232
NO
Sspd detedted
NO
Embedded syncs??
OP_656_RANGE
0 (0-255 output)
1 (16-235 Y/RGB
16-240 CrCb)
ADV7604
GAIN
(255-0+1)x16/1344
= 3.047
(235-16+1)x16/1344
= 2.617