Texas Instruments TAS5504-5142V4 Evaluation Module TAS5504-5142V4EVM TAS5504-5142V4EVM Datenbogen
Produktcode
TAS5504-5142V4EVM
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4.1
TAS5504-5542V4EVM for 2.1 System
Input−USB board
TAS5504−5142V4EVM Module
6- Channel
Analog Input
USB
Interface
Optical
and
Coaxial
S/PDIF Input
I2C Bus
Control Interface
I2S Bus
Channel 1 (SE)
Channel 3 (BTL)
Channel 2 (SE)
TAS5142
TAS5504A
POWER SUPPLY
TAS5504-5542V4EVM for 2.1 System
Figure 4-1. Integrated PurePath Digital™ Amplifier 2.1 System
For operation in 2.1 mode, channel 3 and channel 4 are used to create a BTL channel. This is done by
using J350 (not mounted on standard EVM). Furthermore, the TAS5504A must be set up to use two
outputs as one. This is done by mixing DAP channel 7 with a gain of –1 to PWM 8 output. Following
commands will result in the settings in
using J350 (not mounted on standard EVM). Furthermore, the TAS5504A must be set up to use two
outputs as one. This is done by mixing DAP channel 7 with a gain of –1 to PWM 8 output. Following
commands will result in the settings in
Table 4-1. TAS5504A Register Settings
(1)
REGISTER
I
2
C ADDRESS
VALUE
NOTES
40 80 00 00
Output Mixer Register PWM channel 7
0
×
B0
Mix DAP channel 5 into PWM channel 7
00 00 00 00
7F 80 00 00
Output Mixer Register PWM channel 8
0
×
B1
Mix DAP channel 6 into PWM channel 8
00 00 00 00
(1)
These register settings must be sent after each reset.
In a final application, this is implemented in hardware instead.
Configuration for 2.1 System
20
SLEU075 – June 2006 – Revised June 2006