Spectrum Digital TMS320DM368, Technical Reference

Page: 81 / 146

Spectrum Digital, Inc
3-33
3.4.6 SW6 - SW21, Function Pushbuttons
Switches SW6 through SW21 are push button momentary switches that are inputs in
to the DM368 processor. These switches can be read with software and their function is
determined by the application.
3.4.7 SW22, MSP430 IO0 Pushbutton
Switch SW22 is a push button momentary switch reserved for future use.
3.4.8 SW23, PRTSC Mode Select
Switch SW23 is a 2 position DIP switch that allows the user to select power control and
real time clock mode on the DM368. The figure below shows the switch as it appears
on the EVM.
The table below shows the setting for SW23.
* default
Table 42: SW23, PRTSC Mode Select
Position
1 2
Signal Level DM368 Mode
0 0 0 0 Reserved
0 1 0 1 RTC and GPIO available *
0 1 1 0 Reserved
0 1 1 1 Reserved
Figure 3-25, SW23, PRTSC Mode Select
SW23
Elevated
Actuator
PW
RRST
PWR
CNT
ON
ON
1 2
3
4