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Installation

2.1.5 Digital Audio Interface SPDIF

The Digital Audio Interface SPDIF (RCA/OPTO) accepts digital audio data using the I

S protocol. See the

TAS5711 data sheet for more information.

The RCA connector and the OPTO connector are the two SPDIF interfaces on the MC57xxPSIA board.

The switch S3 toggles between the OPTO and RCA connector to accommodate the signal source. When

the RCA cable or optical cable is connected and the signal source is powered up, verify that the SPDIF

lock indicator (blue LED5) illuminates, confirming that a viable signal is available to the device. Install a

jumper on JP4 across the middle pin and the pin marked SPDIF to connect the digital source to SDIN1.

Install a jumper on JP5 to connect the digital source to SDIN2.

For detailed information on how the data and clocks are provided to the TAS5711, see the schematic

appearing at the end of this document and the DIR9001 device data sheet (SLES198).

2.1.6 ADC Interface

In the absence of a digital signal source, the PCM1808 ADC can be used to convert an analog audio

signal to a digital signal to the TAS5711. The DIR9001 still provides clock signals to the ADC in this

process. A 12-MHz crystal is installed on the MC57xxPSIA board. The ADC is an additional feature of this

board to provide flexibility in sourcing an audio signal to the TAS5711. Review the PCM1808 data sheet

(SLES177) for a detailed description of the ADC on this EVM. Install the jumper on JP4 and J5 across the

middle pin and the pin marked ADC to select ADC as the source for SDIN1 and SDIN2.

2.1.7 Board Power-Up General Guidelines

Connect the MC-57xx and the TAS5711EVM boards by locating pin 1 on each board, indicated by a small

white triangle. The MC-57xx plugs down onto the TAS5711EVM board (i.e., the TAS5711EVM board fits

underneath the MC57xxPSIA board). Pin 1 on each board must be connected to each other.

Install the EVM software on the PC before powering up the board. After connecting the loudspeakers or

other loads, power supplies, and the data line, power up the 5-V power supply first; then power up the

PVDD power supply. It is recommended initially to set the PVDD level to 10 V, then ramp it up to 20 V to

verify cable connections.

2.2 Software Installation

Download the TAS570x GDE from the TI Web site, located on the TAS5711EVM product page. The TI

Web site always has the latest release and any updates to versions of the GUI.

Execute the GUI install program, Setup.exe. Once the program is installed, the program group and

shortcut icon is created in Start → Program → Texas Instruments Inc → TAS570X GDE. THE GUI comes

up as shown in Figure 7.

SLOU280–January 2009 TAS5711EVM Evaluation Module

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