ak4563a AKM Semiconductor, Inc., ak4563a Datasheet - Page 13

• Manufacturer Part Number: ak4563a
• Description: Low Power 16bit 4ch Adc & 2ch Dac With Alc
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
„ Digital High Pass Filter (HPF)
The ADC has HPF for the DC offset cancel. The cut-off frequency of HPF is 3.7Hz (@fs=48kHz) and it is -0.15dB at
20Hz. It also scales with the sampling frequency (fs).
„ Audio Serial Interface Format
Data is shifted in/out the SDTI/SDTO0, 1 pins using BCLK and LRCK inputs. Four serial data are selected by the DIF0
and DIF1 pins as shown in Table 1. In all modes, the serial data is MSB-first, 2's compliment format and it is latched by
“ ” of BCLK.
When DIF1= “0” and DIF0=”1”, only BCLK=64fs is acceptable.
MS0067-E-02
BCLK(32fs)
SDTO(o)
SDTI(i)
BCLK(64fs)
SDTO0,1(o)
SDTI(i)
LRCK
LRCK
BCLK(64fs)
SDTO0,1(o)
SDTI(i)
No.
0
1
2
3
DIF1 bit
0
0
1
1
0
0
0
15:MSB, 0:LSB
15
15
15:MSB, 0:LSB
1
1
1
14
14
Don’t Care
2
2
DIF0 bit
Don’t Care
2
13
13
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3
3
0
1
0
1
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8
15
7
2
9
14
Lch Data
16
Lch Data
SDTO0/SDTO1(ADC)
15
15
6
1
10
15
17
Figure 10. Audio Data Timing (No.1)
I
MSB justified
MSB justified
LSB justified
Figure 9. Audio Data Timing (No.0)
14
14
2
5
0
S compatible
11
16
18
Table 1. Audio Data Format
15 14
13
13 12
4
12
17
19
12
3
13
18
20
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4
14
- 13 -
1
1
1
1
15
31
31
0
0
0
0
I
MSB justified
0
0
LSB justified
LSB justified
2
0
SDTI(DAC)
S compatible
15 14
15 14
1
1
1
Don’t Care
2
2
2
13
13
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15
Don’t Care
3
3
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1
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8
15
7
2
9
14
Rch Data
BCLK
= 64fs
16
Rch Data
15
15
6
1
32fs
32fs
32fs
10
15
17
14 13
14
5
0
11
16
18
15 14
13 12
4
Figure 10
Figure 11
Figure 12
12
17
Figure 9
19
Figure
3
12
13
18
20
2
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14
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[AK4563A]
15
31
31
RESET
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2004/12
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0
15
19
15
1
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1