SLES257 – SEPTEMBER 2010
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lists the optimal setting for each output-stage configuration. Note that the default value is
applicable in all configurations except the TAS5182 SE/BTL configuration.
Table 3-6. Recommended TAS5508C Configurations for Texas Instruments Power Stages
DEVICE
ERROR RECOVERY
RES
TAS5111
(default)
AUT
RES
TAS5112
AUT
TAS5182
RES
CONFIGURATION
BTL
SE
BTL
SE
BTL
SE
BTL
SE
BTL
SE
D7
1
1
0
0
1
1
0
0
1
1
D6
1
1
1
1
1
1
1
1
1
1
D5
1
1
1
1
0
0
0
0
1
1
D4
0
0
0
0
0
0
0
0
0
0
D3
0
0
0
0
0
0
0
0
1
1
D2
0
0
0
0
0
0
0
0
0
0
D1
0
0
0
0
0
0
0
0
0
0
D0
0
0
0
0
0
0
0
0
0
0
RES: To recover from a shutdown, the output stage requires VALID to go low.
AUT: The power stage can auto-recover from a shutdown.
BTL: Bridge-tied load configuration
SE: Single-ended configuration
3.3.2
Headphone Configuration Registers
The headphone configuration controls are identical to the speaker configuration controls. The headphone
configuration control settings are used in place of the speaker configuration control settings for channels 1
and 2 when the headphones are selected. However, only one configuration setting for headphones is
used, and that is the default setting.
3.3.3
Audio System Configurations
The TAS5508C can be configured to comply with various audio systems: 5.1-channel system, 6-channel
system, 7.1-channel system, and 8-channel system.
The audio system configuration is set in the general control register (0xE0). Bits D31–D4 must be zero
and D0 is don't care.
D3
D2
D1
Determines if SUB is to be controlled by PSVC
Enables/disables power-supply volume control
Sets number of speakers in the system, including possible line outputs
D3–D1 must be configured for the audio system in the application, as shown in
48
TAS5508C Controls and Status
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