Datasheet

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5 EVM Operation
5.1 Analog Input
5.2 Analog Output
5.3 Digital Control
5.4 Default Jumper Locations
EVM Operation
This section provides information on the analog input and output, digital control, and general operating
conditions of the TLV320DAC32EVM.
The analog input sources can be applied directly to J1 (top or bottom side) or through signal conditioning
modules available for the modular EVM system.
The analog inputs may also be accessed through J8 and and screw terminal, J6.
The analog outputs from the TLV320DAC32 are available on screw terminals, J12 and J13. They also
may be accessed at the test points on the EVM with the corresponding label. When measuring the
performance of the device, the outputs can be routed through an RC low-pass filter to reduce the
out-of-band noise which can cause incorrect readings from the measurement equipment. These filtered
outputs can be accessed on screw terminals J14 and J15.
The digital control signals can be applied directly to J4 and J5 (top or bottom side). The modular
TLV320DAC32EVM can also be connected directly to a DSP interface board, such as the
5-6KINTERFACE or HPA-MCUINTERFACE, or to the USB-MODEVM Interface board if purchased as part
of the TLV320DAC32EVM-PDK. See the product folder for this EVM or the TLV320DAC32 for a current
list of compatible interface and/or accessory boards.
Table 5 provides a list of jumpers found on the EVM and their factory default conditions.
Table 5. List of Jumpers
DEFAULT
JUMPER POSITION JUMPER DESCRIPTION
JMP1 Installed Connects Analog and Digital Grounds.
JMP2 Open Selects on-board EEPROM as Firmware Source.
JMP5 1-2 Connects the IOVDD supply of the codec to IOVDD or DVDD. It also provides a means of measuring
IOVDD current.
JMP6 Installed Provides a means of measuring DVDD current.
JMP7 Installed Provides a means of measuring DRVDD current.
JMP8 Installed Provides a means of measuring AVDD_DAC current.
JMP9 Open When installed, allows the USB-MODEVM to hardware reset the device under user control
JMP11 Installed When installed, shorts across the output capacitor on HPLOUT; remove this jumper if using AC-coupled
output drive
JMP12 Installed When installed, shorts HPLCOM and HPRCOM. Use only if these signals are set to constant VCM.
JMP13 Installed When installed, shorts across the output capacitor on HPLCOM; remove this jumper if using AC-coupled
output drive
JMP14 Installed When installed, shorts across the output capacitor on HPROUT; remove this jumper if using AC-coupled
output drive
JMP15 Installed When installed, shorts across the output capacitor on HPRCOM; remove this jumper if using AC-coupled
output drive
TLV320DAC32EVM and TLV320DAC32EVM-PDK6 SLAU201 – November 2006
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