TDA7448 STMicroelectronics, TDA7448 Datasheet - Page 7

• Manufacturer Part Number: TDA7448
• Description: IC, VOLUME CNTRL, 6CH, 20SO
• Manufacturer: STMicroelectronics

Specifications of TDA7448

• Audio Control Type: Volume
• Control Interface: I2C
• Operating Temperature Range: 0°C To +70°C
• Audio Ic Case Style: SO
• No. Of Pins: 20
• Svhc: No SVHC (15-Dec-2010)
• Base Number: 7448
• Control / Process: RoHS Compliant
• Supply Voltage Range: 4.75V To 10V
• Rohs Compliant: Yes

In Incremental Bus Mode, the three “not used” functions must be addressed in any case. For example to refresh
“ Speaker Attenuation 3 = 0dB and Speaker Attenuation 6 = -40 dB”; the following bytes must be sent:
Table 7.
Table 8. SPEAKER ATTENUATION SELECTION
value = 0 to -79dB and MUTE
MSB
D7
0
0
0
0
0
0
0
0
0
1
1
SPEAKER ATTENUATION OUT 1
SPEAKER ATTENUATION OUT 2
SPEAKER ATTENUATION OUT 3
SPEAKER ATTENUATION OUT 4
SPEAKER ATTENUATION OUT 5
SPEAKER ATTENUATION OUT 6
D6
0
0
0
0
0
0
0
0
1
0
1
SUBADDRESS
D5
0
0
0
0
1
1
1
1
D4
0
0
1
1
0
0
1
1
D3
0
1
0
1
0
1
0
1
D2
0
0
0
0
1
1
1
1
D1
0
0
1
1
0
0
1
1
LSB
D0
0
1
0
1
0
1
0
1
XXXXXXXX
XXXXXXXX
XXXXXXXX
XXXXXXXX
XXX10010
00000000
00101111
SPEAKER ATTENUATION
MUTE
-16dB
-24dB
-32dB
-40dB
-48dB
-56dB
-64dB
-72dB
-1dB
-2dB
-3dB
-4dB
-5dB
-6dB
-7dB
-0dB
-8dB
0dB
TDA7448
7/14