ak4141 AKM Semiconductor, Inc., ak4141 Datasheet - Page 68

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

ASDC:
BI:
IMONO
MONO:
SNDST[1:0]:
C2DET:
C1DET:
MS0952-E-00
Addr
53H
1) SYS[3:0] indicates either EIAJ or A2 and the ID signal (AMOD[1:0]) indicates bilingual (0x2).
2) SYS[3:0] indicates NICAM, NICAM reception is good, and
1) SYS[2:0] indicates either EIAJ or A2 and the ID signal (AMOD[1:0]) indicates stereo (0x1.)
2) SYS[2:0] indicates NICAM, NICAM reception is good, and NICT
When high, this bit indicates that the Automatic Standard Detection algorithm has completed.
When high, this bit indicates independent mono sound (NICAM only). This bit is set to high when the NICT value is
0xa, 0x2, 0x1 and 0x0.
When high, this bit indicates that the received signal has been identified as a stereo signal. When low, this bit
indicates that stereo is not available. It is high under any of the following conditions.
These bits reflect the sound status of the applicable sound standard.
When high, this bit indicates that a valid secondary carrier (2
When high, this bit indicates that a valid primary carrier has been detected.
When high, this bit indicates that a bilingual mode has been detected. It is high under any of the following
conditions.
Default
Register Name
R/W
SNDST[1:0]
Status
00H
01H
02H
03H
ASDC
RD
D7
0
Table 69. Sound Status
RD
D6
BI
Analog Sound Standard (AM/FM) active
Bad reception condition of analog sound
Bad reception condition of digital sound
0
Digital Sound (NICAM) available
- 68 -
IMONO
RD
D5
0
nd
Status
A2 carrier) has been detected.
MONO
NICT[2:1]
RD
D4
0
[2:1]
indicate bilingual (0x2.)
indicate stereo (0x0.)
RD
D3
SNDST[1:0]
0
RD
D2
0
C2DET
RD
D1
0
[AK4141]
C1DET
2008/05
RD
D0
0