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參數(shù)資料
| 型號： | AK4368EG |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | DAC with built-in PLL & HP-AMP |
| 中文描述： | DAC，帶有內(nèi)置的鎖相環(huán) |
| 文件頁數(shù)： | 22/60頁 |
| 文件大?。?/td> | 817K |
| 代理商： | AK4368EG |
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ASAHI KASEI
[AK4368EG]
MS0529-E-00
2006/07
- 22 -
Serial Data Interface
The AK4368 interfaces with external systems via the SDATA, BICK and LRCK pins. Five data formats are available,
selected by setting the DIF2, DIF1 and DIF0 bits (Table 11). Mode 0 is compatible with existing 16-bit DACs and digital
filters. Mode 1 is a 20-bit version of Mode 0. Mode 4 is a 24-bit version of Mode 0. Mode 2 is similar to AKM ADCs and
many DSP serial ports. Mode 3 is compatible with the I
2
S serial data protocol. In Modes 2 and 3 with BICK
≥
48fs, the
following formats are also valid: 16-bit data followed by eight zeros (17th to 24th bits) and 20-bit data followed by four
zeros (21st to 24th bits). In all modes, the serial data is MSB first and 2’s complement format.
When master mode and BICK=32fs(BF bit = “0”), the AK4368 cannot be set to Mode 1 or Mode 2.
Mode
DIF2
DIF1
DIF0
Format
0
0
0
0
0: 16bit, LSB justified
1
0
0
1
1: 20bit, LSB justified
2
0
1
0
2: 24bit, MSB justified
3
0
1
1
3: I
2
S Compatible
4
1
0
0
4: 24bit, LSB justified
Table 11. Audio Data Format
BICK
Figure
Figure 15
Figure 16
Figure 17
Figure 18
Figure 16
32fs
≤
BICK
≤
64fs
40fs
≤
BICK
≤
64fs
48fs
≤
BICK
≤
64fs
BICK=32fs or 48fs
≤
BICK
≤
64fs
48fs
≤
BICK
≤
64fs
Default
SDATA
Mode 0
BICK
(32fs)
LRCK
SDATA
Mode 0
15
14
6
5
4
BICK
3
2
1
0
15
14
15
14
0
15
14
0
Don’t care
Don’t care
15:MSB, 0:LSB
15
14
6
5
4
3
2
1
0
Lch Data
Rch Data
Figure 15. Mode 0 Timing (LRP = BCKP bits = “0”)
SDATA
Mode 1
LRCK
BICK
19
0
19
0
Don’t care
Don’t care
19:MSB, 0:LSB
SDATA
Mode 4
23:MSB, 0:LSB
20
19
0
20 19
0
Don’t care
Don’t care
22
21
22
21
Lch Data
Rch Data
23
23
Figure 16. Mode 1, 4 Timing (LRP = BCKP bits = “0”)
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