Texas Instruments TLV320AIC12KEVMB-K appendix Analog Input, Analog Output, Digital Control

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5.1Analog Input

The analog input sources can be applied directly to J2 (top or bottom side). The analog inputs may also be accessed through J8 and screw terminals J9 and J10.

5.2Analog Output

The analog outputs from the TLV320AIC12K/14K are available on J1 (top or bottom). They also may be accessed through J6 and J7 or J11. Note that the TLV320AIC14K only has one (differential) output which can be accessed from J1 or screw terminal J6.

5.3Digital Control

The digital control signals can be applied directly to J4 and J5 (top or bottom side). The modular TLV320AIC12KEVMB/14KEVMB can also be connected directly to the USB-MODEVM Interface board included as part of the TLV320AIC12EVMB-K/14EVMB-K. See the product folder for this EVM or the TLV320AIC12K/14K for a current list of compatible interface and/or accessory boards.

5.4Default Jumper Locations

Table 5 lists the jumpers found on the EVM and their respective factory default conditions. Please note that jumper W5 must be set to position 1-2 (IOVDD=3.3V) when using the USB-MODEVM for I2C communication.

		Table 5. List of Jumpers
	DEFAULT
JUMPER	POSITION	JUMPER DESCRIPTION
		Sets the codec as master or slave. When set as master (2-3), the codec provides the
W1	1-2	digital audio clock signals. When set as slave (1-2), the codec receives the digital
		audio clock signals.

W2	1-2
W3	Installed
W4	Installed
W5	1-2

Used for correct polarity for FSD. In stand-alone master, FSD must be pulled high (2-3), In stand alone slave, FSD must be pulled low (1-2).

Provides a means of measuring IOVDD current

Provides a means of measuring DVDD current

IOVDD select. Can be set to 3.3V (1-2) or 1.8V (2-3) although 3.3V is required when using the USB-MODEVM for I2C communication.

W6	Installed	Selects on-board EEPROM as firmware source (required)
W7	Installed	When installed, allows the USB-MODEVM to hardware reset the device under user
		control
W8	Installed	Provides a means of measuring AVDD current
W9	Installed	Provides a means of measuring DRVDD current
W10	Installed	Coupling for OUTP1. Either directly or via capacitor
W11	1-2	Source for INM1. Set to 1-2 when using external common mode for MICIN
W12	Installed	Disconnects electret microphone (MK1)

6Kit Operation

This section provides information on using the TLV320AIC12KEVMB-K/14KEVMB-K, including set up, program installation, and program usage.

6.1TLV320AIC12KEVMB-K/14KEVMB-K Block Diagram

A block diagram of the TLV320AIC12KEVMB-K/14KEVMB-K is shown in Figure 1. The evaluation kit consists of two circuit boards connected together. The motherboard is designated as the USB-MODEVM Interface board, while the daughtercard is the TLV320AIC12KEVMB/14KEVMB described previously in this manual.

SLAU229B–October 2007–Revised August 2008 TLV320AIC12KEVMB-K and TLV320AIC14KEVMB-K User's Guide 7

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