ak4359 AKM Semiconductor, Inc., ak4359 Datasheet - Page 14

• Manufacturer Part Number: ak4359
• Description: 106db 192khz 24-bit 8ch Dac
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
In parallel control mode, the DIF0-1 pins as shown in Table 7 can select four serial data modes. In serial mode, the DIF0-2
bits shown in Table 8 can select five serial data modes. Initial value of DIF0-2 bits is “010”. The setting of DIF1 pin is
ignored. In all modes the serial data is MSB-first, 2’s complement format and is latched on the rising edge of BICK. Mode
2 can be used for 16/20 MSB justified formats by zeroing the unused LSBs.
In serial control mode, when TDM0 bit = “1”, the audio interface becomes TDM mode. In TDM256 mode (TDM1 bit =
“0”, Table 9), the serial data of all DAC (eight channels) is input to the SDTI1 pin. The input data to SDTI2-4 pins is
ignored. BICK should be fixed to 256fs. “H” time and “L” time of LRCK should be 3/256fs at least. The serial data is
MSB-first, 2’s complement format. The input data to SDTI1 pin is latched on the rising edge of BICK. In TDM128 mode
(TDM1 bit = “1”, Table 10), the serial data of DAC (four channels; L1, R1, L2, R2) is input to the SDTI1 pin. Other four
data (L3, R3, L4, R4) is input to the SDTI2. The input data to SDTI3-4 pins is ignored. BICK should be fixed to 128fs.
MS0289-E-02
Audio Serial Interface Format
SDTI
LRCK
BICK
(32fs)
BICK
(64fs)
SDTI
Mode 0
Mode 0
Mode
0
1
2
3
4
TDM1
0
0
0
0
0
0
0
Don’t care
15:MSB, 0:LSB
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1
1
Mode
TDM0
0
1
2
3
0
0
0
0
0
DIF1
6
0
0
1
1
Table 7. Audio Data Formats (Parallel control mode)
DIF2
Table 8. Audio Data Formats (Serial control mode)
10
Lch Data
14
0
0
0
0
1
5
11
15
DIF0 SDTI Format
4
0
1
0
1
DIF1
12
16
0
0
1
1
0
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3
16bit LSB Justified
20bit LSB Justified
24bit MSB Justified
24bit I
Figure 1. Mode 0 Timing
13
17
2
DIF0 SDTI Format
14
0
1
0
1
0
2
1
S Compatible
15
31
- 14 -
16bit LSB Justified
20bit LSB Justified
24bit MSB Justified
24bit I
24bit LSB Justified
0
0
0
0
Don’t care
15 14
2
1
S Compatible
1
LRCK
H/L
H/L
H/L
L/H
6
10
Rch Data
14
BICK
≥32fs
≥40fs
≥48fs
≥48fs
5
LRCK
11
15
H/L
H/L
H/L
L/H
H/L
4
12
16
Figure 1
Figure 2
Figure 3
Figure 4
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3
Figure
BICK
≥32fs
≥40fs
≥48fs
≥48fs
≥48fs
13
17
2
14
1
15
Figure 1
Figure 2
Figure 3
Figure 4
Figure 2
31
Figure
0
0
0
0
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[AK4359]
1
2006/03
1
Default