Debug Support
MOTOROLA
Technical Summary
2-13
2.8.2 Parallel JTAG Interface Connector
The Parallel JTAG Interface Connector, P1, allows the 56F8346 to communicate with a
Parallel Printer Port on a Windows PC; reference
. Using this connector, the
user can download programs and work with the 56F8346’s registers.
shows the
pin-out for this connector. When using the parallel JTAG interface, the jumper at JG9
should be removed, as shown in
Figure 2-7. Block Diagram of the Parallel JTAG Interface
DB-25 Connector
Parallel JTAG Interface
56F8346
TDI
TDO
P_TRST
TMS
TCK
P_RESET
OUT
OUT
OUT
OUT
OUT
OUT
IN
IN
IN
IN
IN
IN
EN
TDI
TDO
TRST
TMS
TCK
RESET
JG9
1
2
+3.3V
Jumper Removed:
Enable JTAG I/F
Jumper Pin 1-2:
Disable JTAG I/F
P_DE
OUT
IN
DE
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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