ak4141 AKM Semiconductor, Inc., ak4141 Datasheet - Page 72

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

SRRSL[3:0]
SRCMP
SRST
SRIND
MS0952-E-00
Addr
58H
Stereo carrier search result. This is only updated when a new stereo carrier is successfully detected.
Stereo carrier search indicator. The SRIND bit indicates that System Select is B/G or D/K with NICAM or A2,
Carrier 1 is present, but Carrier 2 is not detected. This bit can be used to determine if Stereo Carrier Search should be
enabled.
Stereo Carrier Search Result
Default
Register Name
R/W
SRCMP
SRST
SRIND
0
1
0
1
SRRSL[3:0]
0
1
AH
BH
CH
DH
EH
FH
0H
1H
2H
3H
4H
5H
6H
7H
8H
9H
Table 78. Stereo Carrier Search Result (SRRSL) Comparison to SYS
(search is enabled and a stereo carrier is not currently detected)
(either search is disabled or a stereo carrier has been detected)
Stereo Carrier Search Result (SRRSL) Comparison to SYS
SYS[3:0] is B/G or D/K, NICAM or A2 and Carrier 1
Table 77. Stereo Carrier Search TV System Result
TV System
Table 80. Stereo Carrier Search Indicator
RD
D7
B/G
B/G
D/K
D/K
D/K
D/K
is detected and Carrier 2 is not detected
0
0
Table 79. Stereo Carrier Search Status
--
--
--
--
--
--
--
--
-
-
Stereo Carrier Search Indicator
SRRSL and SYS are the same
SRRSL and SYS are different
Stereo Carrier Search Status
SRIND
RD
D6
0
FM-Mono/NICAM (D/K, NICAM)
Not searching
Searching
otherwise
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SRCMP
FM-Stereo (A2, D/K1)
FM-Stereo (A2, D/K2)
FM-Stereo (A2, D/K3)
FM-Mono/NICAM
RD
D5
0
Sound Modulation
FM-Stereo (A2)
No result yet
reserved
reserved
reserved
reserved
reserved
reserved
reserved
reserved
reserved
SRST
RD
D4
0
RD
D3
1
RD
D2
1
(default)
SRRSL[3:0]
(default)
(default)
(default)
RD
D1
1
[AK4141]
2008/05
RD
D0
1