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2.6 Debug LED
An on-board Light-Emitting Diode, (LED), is provided to allow real-time debugging for
user programs. This LED allows the programmer to monitor program execution without
having to stop the program during debugging; refer to
the MOSI signal line. Setting MOSI to a Logic One value will turn on the LED.
Figure 2-4. Schematic Diagram of the Debug LED Interface
2.7 Debug Support
The DSP56F803EVM provides an on-board Parallel JTAG Host Target Interface and a
JTAG interface connector for external Host Target Interface support. Two interface
connectors are provided to support each of these debugging approaches. These two
connectors are designated the JTAG connector and the Host Parallel Interface Connector.
2.7.1 JTAG Connector
The JTAG connector on the DSP56F803EVM allows the connection of an external Host
Target Interface for downloading programs and working with the DSP56F803's registers.
This connector is used to communicate with an external Host Target Interface which
passes information and data back and forth with a host processor running a debugger
program.
Table 2-3
DSP56F803
MOSI
shows the pin-out for this connector.
Table 2-3. JTAG Connector Description
Pin #
Signal
1
TDI
3
TDO
5
TCK
7
NC
9
RESET
Technical Summary
Figure
2-4. LED8 is controlled by
LED 8
BUFFER
GREEN LED
J1
Pin #
Signal
2
GND
4
GND
6
GND
8
KEY
10
TMS
Debug Support
+3.3V
2-7
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