ak4141 AKM Semiconductor, Inc., ak4141 Datasheet - Page 65

• Manufacturer Part Number: ak4141
• Description: Nicam/a2/eia-j Digital Stereo Decoder
• Manufacturer: AKM Semiconductor, Inc.

NERR[15:0]
NICAM error rate high/low byte. Minimum achievable value is 0x003F. When reading these registers, always read the
high byte first. The low byte is only updated when the high byte is read. This ensures that the values read from the two
registers come from the same 16-bit word.
NIAD[10:0]
NICT[4:0]
MS0952-E-00
Addr
Addr
4DH
4EH
4FH
50H
NICAM additional data bits reserved for future use.
NICAM control bits high byte. When reading these registers always read the high byte first. The low byte is only
updated when the high byte is read. This ensures that the values read from the two registers come from the same
16-bit word.
NICAM Control Bits 1
NICAM Control Bits 0
NICAM Error Rate 1
NICAM Error Rate 0
NICT0 – Frame Flag Bit – Value is 0 for 8 consecutive frames and 1 for next eight frames.
Default
Default
Register Name
Register Name
Application Control Information
NICT 3
R/W
R/W
0
0
0
0
1
1
1
1
NICT4
0
1
NICT 2
1
1
0
0
1
1
0
0
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.)
RD
RD
D7
D7
NICT 1
0
0
0
1
0
1
0
1
0
1
Table 63. NICAM control bits 1
Table 64. NICAM control bits 2
NIAD[2:0]
RD
RD
D6
D6
0
0
Stereo signal comprising alternate A-channel and
B-channel samples.
One mono signal and one 352 kbit/s transparent
data channel transmitted in alternate frames.
Two independent mono sound signals transmitted
in alternate frames (designated M1 and M2.)
One 704 kbit/s transparent data channel.
Undefined.
Undefined.
Undefined.
Undefined.
- 65 -
Contents of 704-bit sound/data block
RD
RD
D5
D5
0
0
Definition
RD
RD
D4
D4
0
0
NERR[15:8]
NIAD[10:3]
NERR[7:0]
RD
RD
D3
D3
0
0
NICT[4:0]
RD
RD
D2
D2
0
0
RD
RD
D1
D1
0
0
[AK4141]
2008/05
RD
RD
D0
D0
0
0