bdi
GDB
for GNU Debugger, BDI2000 (ARM11 / Cortex)
User Manual
10
© Copyright 1997-2014 by ABATRON AG Switzerland
V 1.21
2.1.3 Serial Wire Debug
For Cortex-M3 / Cortex-A8 the BDI2000 supports also the „Serial Wire Debug Port“ (SW-DP). In or-
der to use SW-DP a different firmware/logic has to be loaded into the BDI2000 (included on the CD).
Also a special target cable is available on request (p/n 90054).
BDI MAIN / TARGET A Connector Signals
Pin
Name
Describtion
3
GND
System Ground
4
SWCLK
Serial Wire Clock
6
SWDIO
Serial Wire Debug Data Input/Output
10
SWO/SWV
Serial Wire Output / Viewer (optional trace data output)
7
RESET
This open collector output of the BDI2000 can be used to hard reset the target system.
9
Vcc Target
1.8 – 5.0V:
This is the target reference voltage. It indicates that the target has power and it is also used
to create the logic-level reference for the input comparators. It also controls the output logic
levels to the target. It is normally fed from Vdd I/O on the target board.
3.0 – 5.0V with Rev. A/B :
This input to the BDI2000 is used to detect if the target is powered up. If there is a current
limiting resistor between this pin and the target Vdd, it should be 100 Ohm or less.
BDI
2000
Target System
Cortex
The green LED «TRGT» marked light up when target is powered up
BDI
TRGT
MODE
TARGET A
TARGET B
9
1
10
2
Rev. A/B/C
SWCLK
SWDIO
Reset
Vcc Target
Ground
C
D
R
+
grey
grey
grey
red
black
SWO/SWV
V
grey
