SC7314D 查看數據表（PDF） - Silan Microelectronics

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SC7314D

4-CH OUTPUT STEREO AUDIO PROCESSOR WITH 4 STEREO INPUTS AND TONE/VOLUME CONTROL

Silan Microelectronics 

SC7314

Fig. 19 Acknowledge on the I2C 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 8th 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

HANGZHOU SILAN MICROELECTRONICS CO.,LTD

Http: www.silan.com.cn

REV:1.1 2007.09.25

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