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YSS915
8
4. Digital audio interface
SDSY, BCI,DI, L/R,DO,BCO
-
1) Digital audio signal is inputted through BCI, SDSY and DI pins using the following format.
-
2) Digital audio signal is outputted through BCO, L/R, and DO pins using the following format.
-
3) The digital audio interface is made compatible with the following format with OPR register ($00) and DAR register
($04).
N=KP2 standard mode
E=KP2V extended mode
Format1
Use this format when digital audio input is not used.
Format2
Use this format when digital audio input is used.
BCI is able to accept any frequency between including 96fs from 32fs, while BCO outputs only 64 fs.
BCI, SDSY and DI signals must be synchronized with XI clock.
Format3
Use this format when digital audio input is used.
BCI input signal is passed to the BCO output, being inverted.
SDSY input signal is passed to the L/R output, being delayed by 2.5 clocks of BCI.
BCI, SDSY and DI signals must be synchronized with XI clock.
Format
BCI
BCO
OPR
[5]
DAR
[3:2]
MDR
[3]
Available
mode
Format1
-
64fs
1
*
0
N,E
Format2
32-96fs
64fs
0
N,E
64fs
0
1
Format3
48fs
BCI
0
2
0
E
03
Format4
-
64fs
0
*
1
E
BCI
SDSY
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
DI(16bit )
DI(18bit )
DI(20bit )
DI(24bit )
Lch
Rch
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
16
17
18
19
16
17
16
17
18
19
20
21
22
23
16
17
18
19
16
17
0
BCO
L/R
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
DO(16bit )
DO(18bit )
DO(20bit )
DO(24bit )
Lch
Rch
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
16
17
18
19
16
17
16
17
18
19
20
21
22
23
16
17
18
19
16
17
0