BU94603KV Functional Specifications
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Confidential
Target Spec 0.12
Figure V.11.4.1 Status Reception Protocol
Figure V.11.4.2 Relationship between Transfer Data and BUSY
V.12 I2S format
I2S serial audio interface
Signal name I/O
Function
Remarks
LRCK
O I2S Bit clock output (fs=44.1kHz) -
BCK
O I2S Bit clock output
-
DATA
O I2S data output
-
This is a serial audio interface terminal. By inputting L to SEL_DOUT terminal, the interface terminal
becomes enabled. When selecting the I2S serial audio output, the output format varies depending on
MODE. *See Chapter
Ⅴ
.4. MODE2 allows you to select 32fs, 48fs or 64fs. *See Chapter V.4.
Figures V.12.1. V12.2 and V.12.3 show the I2S format to be output.
Figure V.12.1 I2S Output Timing (32fs)
Figure V.12.2 I2S Output Timing (48fs)
Figure V.12.3 I2S Output Timing (64fs)
S
Slave Address
A
Data(8bit)
R/W
A
Data(8bit)
P
A/A
From Master to Slave
From Slave to Master
"0"(write)
A = Acknowledge(SDA low)
A = No Acknowledge(SDA high)
S = Start Condition
P = Stop condition
Step1
S
Slave Address
A
Data(8bit)
R/W
A
Data(8bit)
P
A/A
"1"(read)
Step2
Data(8bit)
A
Step1 command
S
Slave Address
A
0xFF
A
Data(8bit)
P
A/A
Data(8bit)
A
R
Step1 command
S
Slave Address
A
0x00
A
Data(8bit)
P
A/A
Data(8bit)
A
R
Dummy byte for Busy
Dummy byte for Busy
BUSY
I2C
LRCK
Left Channel
Right Channel
BCK(48fs)
DATA
15 14
12 11 10
9
8
7
6
5
4
3
2
1
0
15 14
13
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
1
0
LRCK
BCK(32fs)
DATA
Left Channel
15
Right Channel
13 12
15 14
11
8
7
10
9
6
3
2
5
4
1
0
13 12
15 14
LRCK
BCK(64fs)
DATA
Left Channel
Right Channel
