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SC7314S Datasheet(PDF) 8 Page - Silan Microelectronics Joint-stock

Part No. SC7314S
Description  4CH OUTPUT STEREO AUDIO PROCESSOR WITH 4 STEREO INPUTS AND TONE/VOLUME CONTROL
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Manufacturer  SILAN [Silan Microelectronics Joint-stock]
Direct Link  http://www.silan.com.cn
Logo SILAN - Silan Microelectronics Joint-stock

SC7314S Datasheet(HTML) 8 Page - Silan Microelectronics Joint-stock

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SC7314
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
REV:1.1
2007.09.25
Http: www.silan.com.cn
Page 8 of 14
Fig. 19 Acknowledge on the I
2C BUS
6. Transmission without acknowledge
Avoiding to detect the acknowledge of the audioprocessor, the microprocessor can use a simpler transmission:
simply it waits one clock without checking the slave acknowledgig, and sends the new data.
This approach of course is less protected from mis-working and decreases the noise immunity.
SOFTWARE SPECIFICATION
1. Interface protocol
The interface protocol comprises:
A start conditions
A chip address byte, containing the SC7314 address (the 8
th bit of the bytes must be 0). The SC7314
must always acknowledge at the end of each transmitted byte.
A sequence of data(N-bytes + acknowledge)
A stop condition (P)
2. Chips address
1 (MSB)
0
0
0
1
0
0
0 (LSB)
3. Data bytes
MSB
LSB
Function
0
0
B2
B1
B0
A2
A1
A0
Volume Control
1
1
0
B1
B0
A2
A1
A0
Speaker ATT L
1
1
1
B1
B0
A2
A1
A0
Speaker ATT R
0
1
0
G1
G0
S2
S1
S0
Audio switch
0
1
1
0
C3
C2
C1
C0
Bass control
0
1
1
1
C3
C2
C1
C0
Treble control
Note: Ax=1.25dB steps;Bx=10dB steps;Cx=2dB steps;Gx=3.75dB steps


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