TDA7437N_06 Datasheet, PDF (16/34 Pages) STMicroelectronics – Digitally controlled audio processor

Software specification
4.4
Transmitted data
Table 6.
MSB
Send mode
X
X
X
X
X
SM
P = Pause (Active low)
ZM = Zero crossing muted (HIGH active)
SM = Soft mute activated (HIGH active)
X = Not used
The transmitted data is automatically updated after each ACK.
Transmission can be repeated without new chipaddress.
TDA7437N
LSB
ZM
P
4.5
Data byte specification
Table 7. Data byte specification
MSB
LSB
D7
D6
D5
D4
D3
D2
D1
D0
Function
1
0
0
0 Differential
1
0
0
1 Stereo 1
1
0
1
0 Stereo 2
1
0
1
1 Stereo 3
1
1
0
0 Stereo 4
1
1
0
1 Mono
X
X
X
X
0
X
X
X DC connect ⁽¹⁾
0
0
Half-diff 0dB ⁽²⁾
0
1
Half-diff -6dB ⁽²⁾
1
0
Full-diff 0dB ⁽³⁾
1
1
Full-diff -6dB ⁽³⁾
1. Selected when using a 3 wire differential source (pins 5 and 13 shorted)
2. Selected when using a 4 wire differential source
3. OUTR-INR (OUTL-INR) short circuited internally (no need for external connection
Table 8. Loudness
MSB
LSB
Function
D7
D6
D5
D4
D3
D2
D1
D0
Loudness step
0
0
0
0
0
0
0dB
0
0
0
0
0
1
1dB
0
0
0
0
1
0
2dB
0
0
0
0
1
1
3dB
16/34