Texas Instruments TLV320AIC12KEVMB-K Benutzerhandbuch
6.9
Command Line Interface Tab
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Kit Operation
Please refer to
for details. Note that the ring contact in J8 is not connected.
c. MICIN with external common mode (pseudo-differential) - In this mode, the single ended input is
connected through ac-coupling to MICIN and the bias voltage used to generate the signal is also ac
coupled to INM1. To use this mode, jumper W11 must be installed on pins 1-2. Jumper W12 must be
installed if using the on-board electret microphone (MK1), otherwise a microphone can be connected to
J8. Please refer to
coupled to INM1. To use this mode, jumper W11 must be installed on pins 1-2. Jumper W12 must be
installed if using the on-board electret microphone (MK1), otherwise a microphone can be connected to
J8. Please refer to
for details. Note that the ring contact in J8 is not connected.
d. INP/M2 - selects input 2 as the input source (connected to screw terminal J9).
The Output Configuration control (TLV320AIC12K only) sets outputs OUTP2/P3 to differential or
single-ended mode. If set to differential, OUTP2 and OUTP3 share pin OUTMV as the common inverting
output. If set to single-ended, OUTMV becomes a virtual ground for OUTP2/P3 at the common mode
voltage of 1.35V. Switch SW2 on the TLV320AIC12KEVMB/14KEVMB can be used to try multiple output
configurations on J7 and J11. Please see the Functional Description section on the
single-ended mode. If set to differential, OUTP2 and OUTP3 share pin OUTMV as the common inverting
output. If set to single-ended, OUTMV becomes a virtual ground for OUTP2/P3 at the common mode
voltage of 1.35V. Switch SW2 on the TLV320AIC12KEVMB/14KEVMB can be used to try multiple output
configurations on J7 and J11. Please see the Functional Description section on the
datasheet for details.
The Output Drivers Controls (TLV320AIC12K only) mutes and powers down OUTP2 and/or OUTP3.
Figure 12. Control Register 6 Tab
A simple scripting language controls the TAS1020 on the USB-MODEVM from the LabView™-based PC
software. The main program controls, described previously, do nothing more than write a script which is
then handed off to an interpreter that sends the appropriate data to the correct USB endpoint. Because
this system is script-based, provision is made in this tab for the user to view the scripting commands that
are created as the controls are manipulated, as well as load and execute other scripts that have been
written and saved (see
software. The main program controls, described previously, do nothing more than write a script which is
then handed off to an interpreter that sends the appropriate data to the correct USB endpoint. Because
this system is script-based, provision is made in this tab for the user to view the scripting commands that
are created as the controls are manipulated, as well as load and execute other scripts that have been
written and saved (see
). This design allows the software to be used as a quick test tool or to
help provide troubleshooting information in the rare event that the user encounters a problem with this
EVM.
EVM.
SLAU229B – October 2007 – Revised August 2008
TLV320AIC12KEVMB-K and TLV320AIC14KEVMB-K User's Guide
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