ak4141 AKM Semiconductor, Inc., ak4141 Datasheet - Page 60

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

DM1F[15:0]
MS0952-E-00
Addr
45H
46H
Demod 1 carrier frequency. This word is ignored while ASD is running. This value represents the frequency shift
required to bring the carrier to 0Hz, so it typically has a negative value. A positive value shifts the carrier up.
DM1F = -Fc/Fs x 2
Fc = Nominal frequency of carrier to be demodulated (in Hz)
Fs = Input sample rate (in Hz), see the Sample Rate Register table
corresponds to the selected output sample rate. The
restrictive. Any 16-bit value may be used as needed.
Standard Values for Fc
Dem1 Carrier Freq Ctrl 1
Dem1 Carrier Freq Ctrl 0
4.5MHz
5.5MHz
6.0MHz
6.5MHz
Default
Register Name
R/W
16
(in 2’s complement)
R/W
D7
0
Table 49. Demod 1 carrier frequency
fs=48kHz/32kHz
0xACAB
0xB39C
0xA5B9
0xC180
R/W
D6
0
- 60 -
Table 49
R/W
D5
0
DM1F[15:0]
represents typical values, which is not meant to be
R/W
D4
(Table
0
DM1F[15:8]
DM1F[7:0]
45) for the input sample rate that
R/W
D3
0
fs=44.1kHz
0xACDB
0x9DBD
0xBBF9
0xA54C
R/W
D2
0
R/W
D1
0
[AK4141]
R/W
2008/05
D0
0