7.24 8
×3 Output Mixer Registers (0xB0–0xB1)
TAS5508B
8-Channel Digital Audio PWM Processor
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SLES162C – DECEMBER 2005 – REVISED JULY 2009
DAP channel 6 is mapped though the 8×2 crossbar mixer (0xAF) to PWM channel 6
Note that the pass-through output mixer configuration (0xD0 bit 30 = 1) is recommended. Using the
remapped output mixer configuration (0xD0 bit 30 = 0) increases the complexity of using some features
such as volume and mute. See TAS5508B Errata
(SLEZ006).Total data per register is 8 bytes. The default gain for each selected channel is 1 (0x0 80 00 00).
Table 7-24. Output Mixer Register Format (Upper 4 Bytes)
D31
D30
D29
D28
D27
D26
D25
D24
FUNCTION
0
Select channel 1 to output mixer
0
1
Select channel 2 to output mixer
0
1
0
Select channel 3 to output mixer
0
1
Select channel 4 to output mixer
0
1
0
Select channel 5 to output mixer
0
1
0
1
Select channel 6 to output mixer
0
1
0
Select channel 7 to output mixer
0
1
Select channel 8 to output mixer
G27
G26
G25
G24
Selected channel gain (upper 4 bits)
D23
D22
D21
D20
D19
D18
D17
D16
FUNCTION
G23
G22
G21
G20
G19
G18
G17
G16
Selected channel gain (continued)
D15
D14
D13
D12
D11
D10
D9
D8
FUNCTION
G15
G14
G13
G12
G11
G10
G9
G8
Selected channel gain (continued)
D7
D6
D5
D4
D3
D2
D1
D0
FUNCTION
G7
G6
G5
G4
G3
G2
G1
G0
Selected channel gain (lower 8 bits)
Table 7-25. Output Mixer Register Format (Lower 4 Bytes)
D31
D30
D29
D28
D27
D26
D25
D24
FUNCTION
0
Select channel 1 to output mixer
0
1
Select channel 2 to output mixer
0
1
0
Select channel 3 to output mixer
0
1
Select channel 4 to output mixer
0
1
0
Select channel 5 to output mixer
0
1
0
1
Select channel 6 to output mixer
0
1
0
Select channel 7 to output mixer
0
1
Select channel 8 to output mixer
G27
G26
G25
G24
Selected channel gain (upper 4 bits)
D23
D22
D21
D20
D19
D18
D17
D16
FUNCTION
G23
G22
G21
G20
G19
G18
G17
G16
Selected channel gain (continued)
D15
D14
D13
D12
D11
D10
D9
D8
FUNCTION
G15
G14
G13
G12
G11
G10
G9
G8
Selected channel gain (continued)
D7
D6
D5
D4
D3
D2
D1
D0
FUNCTION
G7
G6
G5
G4
G3
G2
G1
G0
Selected channel gain (lower 8 bits)
The pass-through output mixer setting is:
DAP channel 7 is mapped though the 8×3 crossbar mixer (0xB0) to PWM channel 7
DAP channel 8 is mapped though the 8×3 crossbar mixer (0xB1) to PWM channel 8
Serial-Control Interface Register Definitions
87