AK4113_1 Datasheet, PDF (18/49 Pages) Asahi Kasei Microsystems – 192KHZ 24BIT DIR WITH 6:1 SELECTOR

ASAHI KASEI
[AK4113]
„ Sampling Frequency and Pre-emphasis Detection
The AK4113 has two methods for detecting the sampling frequency.
1. Clock comparison between the recovered clock and X’tal oscillator
2. Sampling frequency information on channel status
The method is selected by the XTL1-0 bits. The detected frequency is available on the FS3-0 bits.
When XTL1-0 bits = “11”, the sampling frequency is detected by the channel status sampling frequency information. The
detected frequency is available on the FS3-0 bits. In parallel control mode, XTL1-0 bits are fixed to “10”.
XTL1 bit
0
0
1
1
XTL0 bit
X’tal Frequency
0
11.2896MHz
1
12.288MHz
0
24.576MHz
1
(Use channel status)
Table 4. Reference X’tal frequency
Default
Except XTL1-0 bit = “11”
XTL1-0 bit = “11”
Register output
fs
FS3 FS2 FS1 FS0
Clock comparison
(Note 10)
Consumer
mode
(Note 11)
Byte3
Bit3,2,1,0
Professional mode
(Note 12)
Byte0
Bit7,6
Byte4
Bit6,5,4,3
0
0
0
0
44.1kHz
0
0
0
1
Reserved
44.1kHz ± 3%
-
0000
0001
01
0000
(Others)
0
0
1
0
0
0
1
1
48kHz
32kHz
48kHz ± 3%
32kHz ± 3%
0010
10
0011
11
0000
0000
0
1
0
0 22.05kHz
0
1
0
1 11.025kHz
0
1
1
0
24kHz
0
1
1
1
16kHz
22.05kHz ± 3%
11.025kHz ± 3%
24kHz ± 3%
16kHz ± 3%
0100
00
0110
00
1001
0001
1
0
0
0
88.2kHz
1
0
0
1
8kHz
88.2kHz ± 3%
8kHz ± 3%
1000
00
1010
1
0
1
0
1
0
1
1
96kHz
64kHz
96kHz ± 3%
64kHz ± 3%
1010
00
0010
1
1
0
0 176.4kHz
1
1
1
0
192kHz
176.4kHz ± 3%
192kHz ± 3%
1100
00
1110
00
1011
0011
Note 10. At least ±3% range is identified as the value in the. Table 5. In case of intermediate frequency of those
two, FS3-0 bits indicate no value. When the frequency is much bigger than 192kHz or much smaller
than 8kHz, FS3-0 bits may indicate “0001” or “1101”.
Note 11. In consumer mode, Byte3 Bit3-0 are copied to FS3-0 bits.
Note 12. In professional mode, FS3-0 bit indicates “0001” except for frequency shown by Table 5.
Table 5. fs Information
MS0349-E-02
- 18 -
2005/08