TDA7348_07 Datasheet, PDF (14/20 Pages) STMicroelectronics – Digitally controlled audio processor

Software specification
TDA7348
Table 8. Loudness (continued)
MSB
LSB
D7
D6
D5
D4
D3
D2
D1
D0
Function
X
X
X
1
0
0
1
1 -3.75dB
X
X
X
1
0
1
0
0 -5dB
X
X
X
1
0
1
0
1 -6.25dB
X
X
X
1
0
1
1
0 -7.5dB
X
X
X
1
0
1
1
1 -8.75dB
X
X
X
1
1
0
0
0 -10dB
X
X
X
1
1
0
0
1 -11.25dB
X
X
X
1
1
0
1
0 -12.5dB
X
X
X
1
1
0
1
1 -13.75dB
X
X
X
1
1
1
0
0 -15dB
X
X
X
1
1
1
0
1 -16.25dB
X
X
X
1
1
1
1
0 -17.5dB
X
X
X
1
1
1
1
1 -18.75dB
For example to select -17.5dB attenuation, loudness OFF, the Data Byte is: X X X1 1 1 1 0
Table 9. Mute
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
Function
1 Soft mute on
0
1 Soft mute with fast slope (I = IMAX)
1
1 Soft mute with slow slope (I = IMIN)
1
0
1
Direct mute
Zero crossing mute on
0
0
Zero crossing mute off
(delayed until next zerocrossing)
1
Zero crossing mute and pause detector
reset
0
0
160mV ZC window threshold (WIN = 00)
0
1
80mV ZC window threshold (WIN = 01)
1
0
1
1
40mV ZC window threshold (WIN = 10)
20mV ZC window threshold (WIN = 11)
0
Non-symmetrical Bass Cut
1
Symmetrical Bass Cut
14/20