STV82X8 Datasheet, PDF (89/157 Pages) STMicroelectronics – Digital Audio Decoder / Processor for BTSC Television/Video Recorders

STV82x8
Register List
12.13 Matrixing
DOWNMIX_MODE
Downmix Mode Configuration
Address: 9Fh
Type: R/W
Bit 7
LT_RT_OUT_M
ODE
Bit 6
Bit 5
Bit 4
MIX_OUT_MODE[2:0]
Bit 3
LFE_IN
Bit 2
Bit 1
Bit 0
MIX_IN_MODE[2:0]
Bit Name
Reset
Function
LT_RT_OUT_MOD
E
Define to format for downmix Lt/Rt output:
0 _{0: Lt/Rt Prologic compatible mode}
1: L/R stereo mode
MIX_OUT_MODE[
2:0]
Select output channels configuration for downmix:
111
see table 3.
LFE_IN
To select if LFE is inputed on I2S1 in multichannel input mode:
1 _{0: No LFE on I2S1 input}
1: LFE on I2S1 input
MIX_IN_MODE[2:0]
Select input channels configuration for downmix:
111
see table 2.
Table 11: DownMix IN modes
Parameter
Coding (bin)
000
001
010
011
100
101
110
111
Parameter
Field Lebel
Function
MODE11
MODE10
MODE20
MODE30
MODE21
MODE31
MODE22
MODE32
not used
1/0 (C)
2/0 (L,R)
3/0 (L,R,C)
2/1 (L,R,S)
3/1 (L,R,C,S)
2/2 (L,R,Ls,Rs)
3/2 (L,R,C,Ls,Rs)
Table 12: DownMix OUT modes
Parameter
Coding (bin)
000
001
010
Parameter
Field Lebel
Function
MODE20t
MODE10
MODE20
2/0 Dolby Surround (Lt,Rt)
1/0 (C)
2/0 (L,R)
89/157