EVM Description and Basics
6
SLAU738 – September 2017
Copyright © 2017, Texas Instruments Incorporated
TLV320AIC3109EVM-K
2
EVM Description and Basics
This section provides information on the analog input and output, digital control, power and general
connection of the TLV320AIC3109EVM-K.
2.1
Default Configuration and Connections
2.1.1
TLV320AIC3109EVM Default Connections
provides a list of jumpers found on the EVM and their factory default conditions.
Table 2. List of Jumpers
Jumper
Default
Position
Jumper Description
J7
2-3
Mic bias selection: when connecting 2-3, mic bias comes from the MICBIAS pin
on the device; when connecting 1-2, mic bias is supplied from an external power
source connected to J6
J8
Open
Connects onboard Mic to IN1P
J11
Open
When installed, shorts across the input AC coupling capacitor on IN2M, for DC
measuring purposes only
J12
Open
When installed, shorts across the input AC coupling capacitor on IN2P, for DC
measuring purposes only
J14
Open
When installed, shorts across the input AC coupling capacitor on IN1M, for DC
measuring purposes only
J15
Open
When installed, shorts across the input AC coupling capacitor on IN1P, for DC
measuring purposes only
J18
Open
When installed, shorts across the output capacitor on HPCOM; remove this
jumper if using AC-coupled output drive
J19
Open
When installed, shorts across the output capacitor on HPOUT; remove this
jumper if using AC-coupled output drive
J22
2-3
IOVDD selection: when connecting 2-3, IOVDD is set to +3.3 VD; when
connecting 1-2, IOVDD and DVDD are shorted at +1.8 VD
J23
Open
When installed, allows the USB-MODEVM to hardware reset the device under
user control
J24
Installed
Provides a measuring point for AVDD current
J25
Installed
Provides a measuring point for DRVDD current
J26
Installed
Provides a measuring point for DVDD current
J27
Installed
Provides a measuring point for IOVDD current
J28
Installed
Connects analog and digital grounds on the lower part the board
J29
Installed
Connects analog and digital grounds on the upper part the board
J30
Open
Selects onboard EEPROM as firmware source