tda7315nd STMicroelectronics, tda7315nd Datasheet - Page 7

• Manufacturer Part Number: tda7315nd
• Description: Digital Controlled Audio Processor
• Manufacturer: STMicroelectronics

Figure 15: Typical Tone Response (with the ext.
MAX CLOCK SPEED 100kbits/s
SOFTWARE SPECIFICATION
Chip address = 80 Hex
DATA BYTES
Ax = 1.25dB steps; Bx = 10dB steps; Cx = 2dB steps; X = don‘t care.
ACK = Acknowledge
S = Start
P = Stop
S
MSB
1
MSB
0
1
1
0
0
0
1
MSB
0
TDA7315 ADDRESS
0
0
components indicated in the test
circuit)
first byte
0
0
0
1
1
1
0
0
0
0
0
B2
0
1
0
1
1
0
0
0
LSB
ACK
0
B1
B1
B1
X
0
1
MSB
0
B0
B0
B0
C3
C3
X
LSB
0
DATA
Data Transferred (N-bytes + Acknowledge)
C2
C2
A2
A2
A2
SOFTWARE SPECIFICATION
Interface Protocol
The interface protocol comprises:
L
A start condition (S)
A chip address byte, containing the TDA7315
address (the 8th bit of the byte must be 0). The
TDA7315 must always acknowledge at the end
of each transmitted byte.
A sequence of data (N-bytes + acknowledge)
A stop condition (P)
LSB
C1
C1
A1
A1
A1
X
ACK
MSB
LSB
A0
A0
A0
C0
C0
X
DATA
Volume control
Speaker ATT L
Speaker ATT R
Loudness
Bass control
Treble control
FUNCTION
TDA7315
LSB
ACK
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P