|
AK4528 Datasheet, PDF (12/29 Pages) Asahi Kasei Microsystems – HIGH PERFORMANCE 24BIT 96KHZ AUDIO CODEC | |||
|
◁ |
ASAHI KASEI
[AK4528]
n Audio Serial Interface Format
In case of serial mode, the DIF0-2 bits as shown in Table 4 support five serial formats. In case of parallel mode, two
formats (Mode 2 and 3) are supported by DIF pin (Table 5). In all modes the serial data is MSB-first, 2âs compliment
format. The SDTO is clocked out on the falling edge of BICK and the SDTI is latched on the rising edge.
Mode
0
1
2
3
4
DIF2 bit
0
0
0
0
1
DIF1 bit
0
0
1
1
0
DIF0 bit
0
1
0
1
0
SDTO
24bit, MSB justified
24bit, MSB justified
24bit, MSB justified
24bit, I2S
24bit, MSB justified
SDTI
16bit, LSB justified
20bit, LSB justified
24bit, MSB justified
24bit, I2S
24bit, LSB justified
LRCK
H/L
H/L
H/L
L/H
H/L
BICK
³ 32fs
³ 40fs
³ 48fs
³ 48fs
³ 48fs
Default
Table 4. Audio data format in Serial Mode
Mode
2
3
DIF pin
0
1
SDTO
24bit, MSB justified
24bit, I2S
SDTI
24bit, MSB justified
24bit, I2S
LRCK
H/L
L/H
BICK
³ 48fs
³ 48fs
Table 5. Audio data format in Parallel Mode
LRCK
01 23
BICK(32fs)
9 10 11 12 13 14 15 0 1 2
SDTO(o)
23 22 21
15 14 13 12 11 10 9 8 23 22 21
9 10 11 12 13 14 15 0 1
15 14 13 12 11 10 9 8 23
SDTI(i)
15 14 13
7 6 5 4 3 2 1 0 15 14 13
7 6 5 4 3 2 1 0 15
01 23
BICK(64fs)
SDTO(o)
23 22 21
17 18 19 20
7 65 43
30 31 0 1 2 3
23 22 21
17 18 19 20
76 5 43
31 0 1
23
SDTI(i)
Donât Care 15 14 13 12 11 2 1 0 Donât Care
SDTO-19:MSB, 0:LSB; SDTI-15:MSB, 0:LSB
Lch Data
Figure 1. Mode 0 Timing
15 14 13 12 11 2 1 0
Rch Data
LRCK
01 2
BICK(64fs)
12 13 14
24 25
SDTO(o)
23 22
12 11 10
0
31 0 1 2
12 13 14
24 25
23 22
12 11 10
0
31 0 1
23
SDTI(i)
Donât Care 19 18
87
10
SDTO-23:MSB, 0:LSB; SDTI-19:MSB, 0:LSB
Lch Data
Donât Care
Figure 2. Mode 1 Timing
19 18
87
Rch Data
10
MS0011-E-00
- 12 -
2000/1
|
▷ |