ak4141 AKM Semiconductor, Inc., ak4141 Datasheet - Page 78

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

CR1F[15:0]
CR1P[15:0]
MS0952-E-00
Addr
Addr
62H
63H
64H
65H
Carrier 1 average frequency. Represents the difference between the nominal carrier frequency and the actual carrier
frequency (2’s complement.)
Ferr = Frequency error. Difference between nominal and actual carrier frequencies (Hz)
Fac = Actual frequency of carrier to be demodulated (Hz)
Fc = Nominal carrier frequency set inDM1F (Hz)
Fs = Input sample rate (Hz), see the Sample Rate Register table
to the selected output sample rate.
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.
Carrier 1 phase noise. Represents the average phase noise in terms of frequency deviation.
Fadev = average frequency deviation (in Hz)
Fs = Input sample rate (in Hz), see the Sample Rate Register table
corresponds to the selected output sample rate.
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.
CR1P
Ferr =
Fac = Fc + Ferr
Carrier 1 Average Frequency 1
Carrier 1 Average Frequency 0
= Fadev / Fs x 2
CR1F
Carrier 1 Phase Noise 1
Carrier 1 Phase Noise 0
Register Name
Register Name
Default
Default
x Fs x 2
R/W
R/W
16
-20
(in 2’s complement)
(Hz)
(Hz)
D7
D7
- 78 -
D6
D6
(Table
D5
D5
(Table
45) for the input sample rate that corresponds
45) for the input sample rate that
CR1F[15:8]
CR1P[15:8]
CR1F[7:0]
CR1P[7:0]
00000000
00000000
D4
D4
RD
RD
D3
D3
D2
D2
D1
D1
[AK4141]
2008/05
D0
D0