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LC75106V データシート(PDF) 10 Page - ON Semiconductor

部品番号 LC75106V
部品情報  Digital Echo LSI with Built-in Mic Amplifier
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メーカー  ONSEMI [ON Semiconductor]
ホームページ  http://www.onsemi.com
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LC75106V データシート(HTML) 10 Page - ON Semiconductor

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LC75106V
No. A2153-10/15
Control Data Structure (Serial Data Input)
The setting of LC75106 can be controlled with I
2C Bus.
All the settings can be controlled by I
2C Bus at the stereo signal internal connection modes (CS terminal = “H”), and all the
volumes except the stereo source control can be set at the stereo signal outside connection modes (CS terminal = “L”).
The karaoke system can be made from external resistance by doing I
2C Bus Line in Pull Up at the stereo signal outside
connection modes.
1) The explanation of I
2C Bus
I
2C Bus (Inter IC Bus) is the bus system which the PHILIPS company developed.
It does controls such as the start, the stop by two control signals of SDA (Serial Data) and SCL (Serial Clock).
The output of each signal is open drain and forms out of wired OR.
S; Start condition/P; Stop condition/ACK; Acknowledge
Data is transmitted in the MSB first.
1 unit is composed of 8 bits and ACK is put back from the slave to confirm.
Slave IC reads data with rising edge of SCL.
Master IC changes data by falling edge in SCL.
2) The control register
Table1 Slave Address
MSB
LSB
0
0
1
1
1
0
0
0
Note; LC75106 is reception exclusive use. It depends and it uses LSB by the “0” fixation.
• I2C data
Function
Sub Address
Data
BINARY
HEX
D7
D6
D5
D4
D3
D2
D1
D0
Stereo line select/Mic1 volume
0000 0001
01
LD2
LD1
LD0
KEY
M1D3
M1D2
M1D1
M1D0
Mic2 volume/Test
0000 0010
02
M2D3
M2D2
M2D1
M2D0
TEST3
TEST2
TEST1
TEST0
Delay time/ECHO volume
0000 0011
03
0
DT2
DT1
DT0
0
ED2
ED1
ED0
Feed back volume
0000 0100
04
0
FB2
FB1
FB0
0
0
0
0
SDA
SCL
S
ACK
ACK
P


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