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2.5 Debug Support
The 56F8323EVM provides an on-board Parallel JTAG Host Target Interface and a JTAG
interface connector for external 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.
2.5.1 JTAG Connector
The JTAG connector on the 56F8323EVM allows the connection of an external Host
Target Interface for downloading programs and working with the 56F8323'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.
shows the pin-out for this connector.
Table 2-5
Pin #
1
3
5
7
9
11
13
When this connector is used with an external Host Target Interface, the parallel JTAG
interface should be disabled by placing a jumper in jumper block JG3. Refer to
for this jumper's selection options.
Table 2-6. Parallel JTAG Interface Disable Jumper Selection
2-8
Freescale Semiconductor, Inc.
Table 2-5. JTAG Connector Description
J3
Signal
TDI
TDO
TCK
NC
RESET
+3.3V
DE
JG3
No jumpers
Enable On-board Parallel JTAG Interface
1–2
Disable on-board Parallel JTAG Interface
56F8323EVM User Manual
For More Information On This Product,
Go to: www.freescale.com
Pin #
Signal
2
GND
4
GND
6
GND
8
KEY
10
TMS
12
NC
14
TRST
Comment
Table 2-6
MOTOROLA
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