M 5 2 2 3 3 D E M O
S E P T E M B E R 2 5 , 2 0 0 6
9
but may be installed by the user if needed. Refer to the MCF52235 Integrated Microcontroller
Reference Manual for details on using the Background Debug Module
Optional JTAG access is also supported through the BDM_PORT header. To use this optional
JTAG access, open the cut-trace between pin 1 and pin 2 of the BDM_SEL option header. In-
stall a standard 1x3 header at location BDM_SEL and install a shunt between pin 2 and pin 3.
Refer to the MCF52235 Integrated Microcontroller Reference Manual (
www.freescale.com
) for
details on using the JTAG port access.
BDM_PORT Header
A ColdFire BDM cable may be attached to the 26-pin BDM_PORT port header. This header is
not installed in default configuration. Its use requires installing a 2x13, 0.1” center, pin-header.
Refer to the BDM documentation, in the device reference manual, for details on using the BDM
cable. The BDM_PORT header pin-out is shown below.
Figure 1: BDM_PORT
NC
1
2
BKPT*
GND
3
4
DSCLK
GND
5
6
TCLK (JTAG)
RSTI*
7
8
DSI
Refer to the MCF52235 Integrated Microcon-
troller Reference Manual for details on using
the BDM_PORT
VDD
9
10
DSO
GND
11
12
ALLPST
ALLPST
13
14
ALLPST
ALLPST
15
16
NC
NC
17
18
NC
NC
19
20
GND
NC
21
22
NC
GND
23
24
TCLK (BDM)
VDD
25
26
TA*
NOTE:
This header is not installed in default configuration.
Integrated BDM_PORT
The M52233DEMO board features an integrated USB-BDM debugger. The integrated debug-
ger supports application development and debugging via the background debug mode. A type
B, USB connector provides connectivity between the target board to the host PC.
NOTE:
Using the integrated USB BDM requires CodeWarrior 6.1 Special Edition or develop-
ment tools from P&E Microcomputer Systems.
The integrated debugger provides power and ground to the target, thereby eliminating the
need to power the board externally. Power from the integrated USB-BDM is derived from the
USB bus and total current consumption is limited by the USB specification. Total current con-
sumption for the target board, and all connected circuitry, must not exceed
500mA
. Excessive
