Spectrum Digital TMS320C6416 DSK, Technical Reference

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Spectrum Digital, Inc
1-6 TMS320C6416 DSK Module Technical Reference
1.5 Configuration Switch Settings
The DSK has 3 configuration switches that allows users to control the operational state
of the DSP when it is released from reset. The configuration switch block is labeled
SW3 on the DSK board, next to the reset switch.
Configuration switch 1 controls the endianness of the DSP while switches 2 and 3
configure the boot mode that will be used when the DSP starts executing. By default all
switches are off which corresponds to EMIFB boot (out of 8-bit Flash) in little endian
mode. The figure below shows these settings.
1.6 Power Supply
The DSK operates from a 5V external power supply connected to the main
power input (J5). Internally, the +5V input is converted into +1.4V and +3.3V using a
dual voltage regulator. The +1.4V supply is used for the DSP core while the +3.3V
supply is used for the DSP's I/O buffers and all other chips on the board. The power
connector is a 2.5mm barrel-type plug.
There are three power test points on the DSK at JP1, JP2 and JP4. All 6416 I/O
current passes through JP2 while all core current passes through JP1. All system
current passes through JP4. Normally these jumpers are closed. To measure the
current passing through remove the jumpers and connect the pins with a current
measuring device such as a multimeter or current probe.
The DSK pr3.3V, up to 1A for the daughter card. The +3.3V supply is derived
from the +5V power source via the main +3.3 volt regulator. It is also possible to
provide the daughter card with +12V and -12V when the external power connector (J6)
is used.
Table 1: Configuration Switch Settings
Switch 4 Switch 3 Switch 2 Switch 1 Configuration Description
Off 720 Mhz operation (60 Mhz
input clock)
On 600 Mhz operation (50 Mhz
input clock)
Off Off EMIF boot from 8-bit Flash
Off On No Boot
On Off Reserved
On On HPI boot
Off Little endian
On Big endian