Texas Instruments SLEU056 - Manual (Page 10)

TAS5010−5112F2EVM Features
1-2
1.1 TAS5010−5112F2EVM Features
- PurePath Digital ™ reference design (double-sided plated-through PCB
layout)
- S/PDIF receiver with coaxial and optical input (sampling rate = 32 kHz –
192 kHz)
- I 2 S audio interface (sampling rate: 32 kHz – 96 kHz)
- On-board volume control
- Auto-mute function
- Self-contained short circuit and temperature protection system
- Digital audio processor (DAP), which include 24-bit volume control, digital
gain, bass and treble control, parametric equalization, dedicated speaker
equalization, loudness control, and adjustable dynamic range
compression/expansion.
- DAP control through PC software (DCT software from Texas Instruments)
- Default DAP settings is downloaded to an EEPROM with the DCT
software
- Analog line input (use internal analog-to-digital converter in DAP)
- Analog line output (use internal digital-to-analog converter in DAP)
Figure 1−1. Simplified TAS5010−5112F2EVM Block Diagram
DIR1703
S/PDIF
RECEIVER
PARRALLEL
PORT
INTERFACE
I2S INTERFACE
TAS5010
DIGITAL AUDIO
PWM PROCESSOR
TAS5112ADFD
DIGITAL AUDIO
PWM POWER
OUTPUT STAGE
I2C BUS
I2S BUS
I2S BUS
PC SOFTWARE
OPTICAL INPUT
COAXIAL INPUT
I2S INPUT
32 kHz − 96 kHz
32 kHz − 192 kHz
ANALOG INPUT
ANALOG OUTPUT
VOLUME
CONTROL
TAS3002
DIGITAL AUDIO
PROCESSOR
The DIR1703 IC from Texas Instruments/Burr-Brown is used as S/PDIF
receiver and system clock generator. This product is a digital audio interface
receiver (DIR) that receives and decodes audio data up to 96-kHz sampling
rate. DIR1703 is running in a configuration where it automatically switches
between PLL mode and crystal mode. When the DIR1703 is connected to an
active digital source, it is running in PLL-mode. The system clock (SCKO)
frequency depends on the incoming sampling rate (fs): SCKO = 256 x fs. When
no digital source is represented, the DIR1703 switches to crystal mode. The
system clock frequency in crystal mode depends on the external crystal
connected to the DIR1703 receiver. On the TAS5010−5112F2EVM board, the
crystal-mode system clock is 12.288 MHz.
Crystal-mode operation is used to generate a fixed clock when the
TAS5010−5112F2EVM board is connected to an analog source. The external
anti-aliasing filter for the A/D converter is optimized to 48-kHz sampling rates.