Texas Instruments TAS5708EVM, Руководство пользователя, Страница: 7 / 26

2.1.7 Board Power-Up General Guidelines
2.2 Software Installation
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Installation
defaults to 48 kHz when no signal is on the SPDIF input terminals. 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 TAS5708/10. Review the PCM1808 data sheet (
SLES177 ) for a detailed description of
the ADC on this EVM. Install the jumper on JP4 across the middle pin and the pin marked ADC to select
ADC as the source for SDIN1.
Connect the MC-57xx and the TAS5708(TAS5710)EVM boards by locating pin 1 on each board, indicated
by a small white triangle. The MC-57xx plugs down onto the TAS5708(TAS5710)EVM board (i.e., the
TAS5708(TAS5710)EVM board fits underneath the MC57xxPSIA board). Pin 1 on each board must be
connected to each other.
Install the EVM software on the personal computer (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 PVCC power supply. It is recommended initially to set the PVCC level to 10 V, then
ramp it up to 20 V to verify cable connections.
Download the TAS570X GDE from TI Web site. The TI Web site always has the latest release of the GUI
and any update versions.
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 come
ups as shown in Figure 6 .
Select the appropriate tab, in this case select TAS5708 (or TAS5710) tab. It has two subwindows. One
shows the Process Flow window. From the Process Flow window, each signal processing function tool
can be selected by clicking on it. The Biquad GUI and the DRC GUI can be opened by using the right
button of the mouse. This window also shows Input select, Mode select, Channel, and Master Volume. All
functions are shown in the order in which they appear in the device.
The other subwindow, Properties window, has the properties where a user can update by selecting from
the available options. The properties available depend on the device selected. From the main window, the
user must set three properties before connecting to the EVM.
Select the device Enable/Disable auto bank switch function, and set the sample rate. The TAS570x
automatically detects sample rates. The setting is simply to synchronize the GUI and the device.
SLOU232A – January 2009 – Revised January 2009 TAS5708(TAS5710)EVM 7
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