Texas Instruments appendix TLV320AIC12KEVMB-K/14KEVMB-K Block Diagram

Kit Operation

EVM￿Position￿1

TLV320AIC12KEVMB/14KEVMB

TLV320AIC12K/14K

Control￿Interface

I2C

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	TAS1020B
EVM￿Position￿2	USB￿8051
	Microcontroller

SMARTDM

Audio￿Interface

USB

Figure 1. TLV320AIC12KEVMB-K/14KEVMB-K Block Diagram

The USB-MODEVM Interface board is intended to be used in USB mode, where control of the installed EVM is accomplished using the onboard USB controller device. Provision is made, however, for driving all the data buses (I2C, PCM/SMARTDM™) externally. The source of these signals is controlled by SW2 on the USB-MODEVM. Refer to Table 6 for details on the switch settings.

Additionally, SW3 on the USB-MODEVM (IOVDD SELECT) must be set up to 3.3V (SW3 position 1 on, SW3 positions 2-8 off).

8 TLV320AIC12KEVMB-K and TLV320AIC14KEVMB-K User's Guide SLAU229B–October 2007–Revised August 2008

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