Spectrum Digital TMS320DM6467 Technical Reference page 14

Spectrum Digital, Inc
1.5 Configuration Switch Settings
The EVM has an eight position boot switch that allow users to control the operational
state of the processor when it is released from reset. The configuration switch is
labeled SW3 on the EVM board.
The switch configures the boot mode that will be used when the CPU starts executing.
By default the switches are configured to NAND boot. Refer to the boot load options in
Chapter 3 for configuring switch SW3.
1.6 Power Supply
The EVM operates from a single +5V external power supply connected to the main
power input (J15), a 2.5 MM. barrel-type plug. Internally, the +5V input is converted
into +1.2V, +1.8V and +3.3V using Texas Instruments swift voltage regulators and PTH
power module. The +1.2V supply is used for the DSP core while the +3.3V supply is
used for the DSP's I/O buffers and other chips on the board. The +1.8 volt supply is
used for TMS320DM6467 DDR2 interface, and DDR2 memory.
There are multiple power test points on the EVM. The three main test point pairs
provide a convenient mechanism to check the EVM's current for each supply. The table
below shows the voltages for each test point and what the supply is used for.
Test Point Pair
TP15 & TP16
TP23 & TP24
TP18 & TP19
1-6
Table 1: Power Test Points
Voltage
+1.2 V TMS320DM6467 Core
+3.3V DSP I/O and logic
+1.8 V DDR2 Memory, DSP I/O, and logic
TMS320DM6467 EVM Technical Reference
Voltage Use