Datasheet

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2.2 Default Configuration and Connections
2.2.1 USB-MODEVM
Table 1 provides a list of the SW2 settings on the USB-MODEVM. For use with the TLV320AIC3253EVM,
SW-2 positions 1, 3, 4, 5, 6, and 7 must be set to ON, whereas SW-2.2 and SW-2.8 must be set to OFF. If
the TLV320AIC3253EVM is to be used with an external audio interface, SW2.4 and SW2.5 also need to
be set to OFF and such interface must be connected as explained in Section 2.4
Table 1. USB-MODEVM SW2 Settings
SW-2 Switch Number Label Switch Description
1 A0 USB-MODEVM EEPROM I
2
C Address A0
ON: A0 = 0
OFF: A0 = 1
2 A1 USB-MODEVM EEPROM I
2
C Address A1
ON: A1 = 0
OFF: A1 = 1
3 A2 USB-MODEVM EEPROM I
2
C Address A2
ON: A2 = 0
OFF: A2 = 1
4 USB I
2
S I
2
S Bus Source Selection
ON: I
2
S Bus connects to TAS1020
OFF: I
2
S Bus connects to USB-MODEVM J14
5 USB MCK I
2
S Bus MCLK Source Selection
ON: MCLK connects to TAS1020
OFF: MCLK connects to USB-MODEVM J14
6 USB SPI SPI Bus Source Selection
ON: SPI Bus connects to TAS1020
OFF: SPI Bus connects to USB-MODEVM J15
7 USB RST RST Source Selection
ON: EVM Reset Signal comes from TAS1020
OFF: EVM Reset Signal comes from USB-MODEVM J15
8 EXT MCK External MCLK Selection
ON: MCLK Signal is provided from USB-MODEVM J10
OFF: MCLK Signal comes from either selection of SW2-5
2.2.2 TLV320AIC3253 Jumper Locations
Table 2 provides a list of jumpers found on the EVM and their factory default conditions.
Table 2. List of Jumpers and Switches
Jumper Default Position Jumper Description
W1 1-2 Sets IOVDD to 3.3V (default) or 1.8V.
W2 2-3 Sets DIGMIC_PWR to 3.3V (default) or 1.8V.
W3 Removed Connects GPIO2 to RESET line.
W4 Installed Provides a means to measure LDOin/HPVDD current.
W5 Installed Provides a means to measure AVDD current. When using the internal LDO, this jumper should be
removed.
W6 Installed Provides a means to measure DVDD current.
W7 Installed Provides a means to measure IOVDD current.
W8 Removed Connects 16-Ω load to HPL outputs.
W9 Removed Connects 16-Ω load to HPR outputs.
W10 Removed When installed, shorts across the output capacitor on HPL; remove this jumper if using AC-coupled output
drive.
W11 Removed When installed, shorts across the output capacitor on HPR; remove this jumper if using AC-coupled output
drive.
W12 Removed When inserted, connects MICBIAS to J2.4 for headset detection use.
5
SLAU317A–May 2010–Revised October 2012 TLV320AIC3253EVM-K
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