Switch Sw2; Leds; Figure 2-14, Sw2 Layout - Spectrum Digital eZdsp F2804 Series Technical Reference

2.5.2 Switch SW2

Switch SW2 on the eZdsp F2804x has 4 positions that allow the user to configure the
SCI MUX. The function of each position is shown in the table below.
Position Function
1 SCIA/GPIO
MUX Control
2 SCIA/GPIO
MUX Enable
The layout of switch SW2 is shown in the figure below.

2.6 LEDs

The eZdsp
+5 volts and is normally 'on' when power is applied to the board. DS2 is under software
control and is tied to the GPIO34 pin on the DSP through a buffer. These are shown in
the table below.
Table 15: SW2 Switch Positions
Open/High GPIO28, GPIO29 to expansion connector P8
Closed/Low GPIO28, GPIO29 to SCIA/CANA transceivers
Open/High GPIO28, GPIO29 isolated
Closed/Low GPIO28, GPIO29 not isolated
1
2
3
4
Open/High | Closed/Low
Default from factory

Figure 2-14, SW2 Layout

TM
F2804x has two light-emitting diodes. DS1 indicates the presence of
Table 16: LEDs
LED # Color
DS1 Green
DS2 Green GPIO34 bit (GPIO34 high = on)
Settings
SCIA/GPIO MUX Control
SCIA/GPIO MUX Enable
Not Used
Not Used
Controlling Signal
+5 Volts
Spectrum Digital, Inc
2-19