ak4145 AKM Semiconductor, Inc., ak4145 Datasheet - Page 11

• Manufacturer Part Number: ak4145
• Description: Digital Stereo Btsc Encoder
• Manufacturer: AKM Semiconductor, Inc.

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Data is shifted in via the SDTI pin using BICK and LRCK inputs. In serial control mode (P/S pin = “L”), the DIF0-2 bits
select five serial data modes as shown in
data modes as shown in
rising edge of BICK. Mode 2 can be used for 16/20 MSB justified formats by zeroing the unused LSBs.
Rev. 0.3
Audio Serial Interface Format
SDTI
LRCK
BICK
(32fs)
BICK
(64fs)
SDTI
Mode 0
Mode 0
Mode
0
1
2
3
4
DIF2
Bit
0
0
0
0
1
0
0
Don’t care
15:MSB, 0:LSB
15 14
Mode
1
1
2
3
DIF1
Table
Bit
0
0
1
1
0
6. In all modes the serial data is MSB-first, 2’s compliment format and is latched on the
DIF0
6
DIF
pin
bit
Table 6. Audio Data Formats (Parallel control mode)
0
1
0
1
0
1
0
Table 5. Audio Data Formats (Serial control mode)
Lch Data
10
14
5
11
15
16bit LSB Justified
20bit LSB Justified
24bit MSB Justified
16/24bit I
24bit LSB Justified
SDTI Format
24bit MSB Justified
16/24bit I
4
Table
SDTI Format
12
16
15 14
3
Figure 1. Mode 0 Timing
5. In parallel control mode (P/S pin = “H”), the DIF pin select two serial
13
17
2
2
2
S Compatible
S Compatible
14
1
15
31
- 11 -
0
0
0
0
Don’t care
15 14
1
1
32fs or ≥48fs
32fs or ≥48fs
6
BICK
≥32fs
≥40fs
≥48fs
≥48fs
BICK
≥48fs
10
Rch Data
14
5
11
15
4
12
16
15 14
3
Figure 3
Figure 4
Figure 1
Figure 2
Figure 3
Figure 4
Figure 2
Figure
Figure
13
17
2
14
1
15
31
(default)
0
0
0
0
15 14
[AK4145]
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2007/11
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