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2.5.2 Parallel JTAG Interface Connector
The Parallel JTAG Interface Connector, P2, allows the DSP56F801 to communicate with
a Parallel Printer Port on a Windows PC; reference
the user can download programs and work with the DSP56F801's registers.
shows the pin-out for this connector. When using the parallel JTAG interface, the jumper
at JG5 should be removed, as shown in
DB-25 Connector
Jumper Removed:
Enable JTAG I/F
Jumper Pin 1-2:
Disable JTAG I/F
Figure 2-4. Block Diagram of the Parallel JTAG Interface
Table 2-4. Parallel JTAG Interface Connector Description
Parallel JTAG Interface
TDI
TDO
P_TRST
TMS
TCK
P_RESET
+3.3V
JG5
1
2
Pin #
Signal
1
NC
2
PORT_RESET
3
PORT_TMS
4
PORT_TCK
5
PORT_TDI
6
PORT_TRST
7
NC
8
PORT_IDENT
Technical Summary
Figure
2-4. By using this connector,
Table
2-3.
IN
OUT
OUT
IN
IN
OUT
IN
OUT
OUT
IN
IN
OUT
EN
P2
Pin #
14
15
PORT_IDENT
16
17
18
19
20
21
Debug Support
Table 2-4
DSP56F801
TDI
TDO
TRST
TMS
TCK
RESET
Signal
NC
NC
NC
GND
GND
GND
GND
2-7
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