Parallel Jtag Interface Connector; Block Diagram Of The Parallel Jtag Interface; Parallel Jtag Interface Connector Description - Motorola 56F805 Hardware User Manual

2.7.2 Parallel JTAG Interface Connector

The Parallel JTAG Interface Connector, P1, allows the 56F805 to communicate with a
Parallel Printer Port on a Windows PC; refer to
user can download programs and work with the 56F805's registers.
pin-out for this connector. When using the parallel JTAG interface, the jumper at JG5
should be removed, as shown in
on-board Host/Target Interface to be powered by the Target board instead of the Host
system when necessary; reference
Host computer parallel port.
DB-25
PORT_TDI
PORT_TDO
PORT_TRST
PORT_TMS
PORT_TCK
PORT_RESET
Figure 2-5. Block Diagram of the Parallel JTAG Interface
Table 2-5. Parallel JTAG Interface Connector Description
Pin #
MOTOROLA
Freescale Semiconductor, Inc.
Table 2-4. A jumper, JG11, is provided to allow the
2-6. This may be necessary when using a +3.3V
Table
PARALLEL JTAG
INTERFACE LOGIC
Signal
1 NC
2 PORT_RESET
3 PORT_TMS
4 PORT_TCK
5 PORT_TDI
6 PORT_TRST
7 NC
8 PORT_IDENT
9 PORT_VCC
Technical Summary
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Figure 2-5. By using this connector, the
TDI
TDO
TRST
TMS
TCK
RESET
P1
Pin # Signal
14 NC
15 PORT_IDENT
16 NC
17 NC
18 GND
19 GND
20 GND
21 GND
22 GND
Debug Support
Table 2-5 shows the
56F805
2-9