IC DGTL AUDIO PWM PROC 64-TQFP

TAS5508APAG

Manufacturer Part NumberTAS5508APAG
DescriptionIC DGTL AUDIO PWM PROC 64-TQFP
ManufacturerTexas Instruments
TypePWM Processor
TAS5508APAG datasheet
 


Specifications of TAS5508APAG

ApplicationsDVDMounting TypeSurface Mount
Package / Case64-TQFP, 64-VQFPFor Use WithTAS5342DDV6EVM - TAS5342DDV6EVMTAS5508-5142K7EVM - EVAL MODULE FOR TAS5508B/TAS5142TAS5508-5122C6EVM - EVAL MODULE FOR TAS5508B/TAS5122TAS5508-5121K8EVM - EVAL MODULE FOR TAS5508B/TAS5121
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther names296-17475
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TAS5508A
8-Channel Digital Audio PWM Processor
SLES119A – FEBRUARY 2004 – REVISED JULY 2009
Table 3-5. Description of the Channel Configuration Registers (0x05 to 0x0C) (continued)
BIT
D4
Inverts the PWM output. Inverting the PWM output can be an advantage if the power stage input pin is opposite the TAS5508A
PWM pinout. This makes routing on the PCB easier. To keep the phase of the output, the speaker terminals must also be
inverted.
D3
The power stage TAS5182 has a special PWM input. To ensure that the TAS5508A has full control in all occasions, the PWM
output must be remapped.
D2
Can be used to handle click and pop for some applications.
D1
This bit is normally used together with D2. For some power stages, both PWM signals must be high to get the desired operation
of both speaker outputs to be low. This bit sets the PWM outputs high-high during mute.
D0
Not used
Table 3-6
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 TAS5508A Configurations for Texas Instruments Power Stages
DEVICE
ERROR RECOVERY
RES
TAS5111
(default)
AUT
RES
TAS5112
AUT
TAS5182
RES
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 TAS5508A 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
Determines if SUB is to be controlled by PSVC (D3 is a write-only bit)
D2
Enables/disables power-supply volume control
D1
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
TAS5508A Controls and Status
DESCRIPTION
CONFIGURATION
D7
D6
BTL
1
1
SE
1
1
BTL
0
1
SE
0
1
BTL
1
1
SE
1
1
BTL
0
1
SE
0
1
BTL
1
1
SE
1
1
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D5
D4
D3
D2
D1
1
0
0
0
0
1
0
0
0
0
1
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
1
0
1
0
0
Table
3-7.
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D0
0
0
0
0
0
0
0
0
0
0