AK4141 Datasheet, PDF (65/96 Pages) Asahi Kasei Microsystems – NICAM/A2/EIA-J Digital Stereo Decoder

CONFIDENTIAL
[AK4141]
Addr
Register Name
D7
D6
D5
D4
D3
D2
D1
D0
4DH NICAM Error Rate 1
NERR[15:8]
4EH NICAM Error Rate 0
NERR[7:0]
R/W
RD
RD
RD
RD
RD
RD
RD
RD
Default
0
0
0
0
0
0
0
0
NERR[15:0]
NICAM エラーレートhigh/low バイト。最小値は0x003Fです。レジスタはhighバイトを先にreadして下さ
い。lowバイトはhighバイトがreadされた時だけ更新されます。
Addr
Register Name
D7
D6
D5
D4
D3
D2
D1
D0
4FH NICAM Control Bits 1
NIAD[10:3]
50H NICAM Control Bits 0
NIAD[2:0]
NICT[4:0]
R/W
RD
RD
RD
RD
RD
RD
RD
RD
Default
0
0
0
0
0
0
0
0
NIAD[10:0]
NICAM additional data bits reserved for future use.
NICT[4:0]
NICAMコントロールビット high/Low バイト。レジスタはhighバイトを先にreadして下さい。lowバイト
はhighバイトがreadされた時だけ更新されます。
NICT4
0
1
Definition
The analog sound signal is not carrying the same program as the
digital signal.
The analog sound signal is carrying the same program as the digital
stereo signal (or mono signal in M1 frames.)
Table 63. NICAM control bits 1
Application Control Information
Contents of 704-bit sound/data block
NICT3 NICT2 NICT1
0
0
0
Stereo signal comprising alternate A-channel and
B-channel samples.
0
0
1
One mono signal and one 352 kbit/s transparent
data channel transmitted in alternate frames.
0
1
0
Two independent mono sound signals transmitted in
alternate frames (designated M1 and M2.)
0
1
1
One 704 kbit/s transparent data channel.
1
0
0
Undefined.
1
0
1
Undefined.
1
1
0
Undefined.
1
1
1
Undefined.
Table 64. NICAM control bits 2
NICT0 – Frame Flag Bit – Value is 0 for 8 consecutive frames and 1 for next eight frames.
MS0952-J-03
- 65 -
2013/12