AK8857VQ Datasheet, PDF (91/105 Pages) Asahi Kasei Microsystems – Dual Channel Digital Video Decoder

[AK8857VQ]
AGC & ACC A Control Register (R/W) [Sub Address 0x12] (A block register)
AGC & ACC B Control Register (R/W) [Sub Address 0x2A] (B block register)
AGC and ACC setting register.
Sub Address 0x12, 0x2A
bit 7
bit 6
bit 5
ACCFRZA ACCA1 ACCA0
ACCFRZB ACCB1 ACCB0
Default Value
0
0
0
bit 4
AGCFRZA
AGCFRZB
0
bit 3
AGCCA1
AGCCB1
0
bit 2
AGCCA0
AGCCB0
0
Default Value : 0x00
bit 1
bit 0
AGCTA1 AGCTA0
AGCTB1 AGCTB0
0
0
AGC & ACC A/B Control Register Definition
Bit Register Name
bit 0 AGCTA/B 0
~
~
bit 1 AGCTA/B 1
AGC Time Constant_A/B
bit 2 AGCCA/B 0
~
~
bit 3 AGCCA/B 1
AGC Coring Control_A/B
bit 4 AGCFRZA/B AGC Freeze_A/B
bit 5 ACCTA/B 0
~
~
bit 6 ACCTA/B 1
ACC Time Constant_A/B
bit 7 ACCFRZA/B ACC Freeze_A/B
R/W Definition
AGC time constant (T) setting*
(if disabled, PGA can be set manually)
[ AGCT1 : AGCT0 ]
R/W [00] : Disable
[01] : Fast [ T = 1Field ]
[10] : Middle [ T =7Fields ]
[11] : Slow [ T = 29Fields ]
AGC non-sensing bandwidth (LSB) setting
[ AGCC1 : AGCC0 ]
[00] : ±2LSB
R/W
[01] : ±3LSB
[10] : ±4LSB
[11] : No non-sensing band
AGC freeze function (ON/OFF) setting
R/W ^{(AGC set values are saved during freeze)}
[0] : Non-frozen
[1] : Frozen
ACC time constant (T) setting
[ ACCT1 : ACCT0 ]
[00] : Disable
R/W
[01] : Fast [ T = 2Fields ]
[10] : Middle [ T =8Fields ]
[11] : Slow [ T = 30Fields ]
ACC freeze function (ON/OFF) setting
(ACC set values are saved during freeze)
R/W
[0] : Non-frozen
[1] : Frozen
MS1189-E-01
-91-
2010/12