BDM Connector Information
35
USB TAP Users Guide
7
RESET
Must be wired to the target. During reset, the USB TAP drives
RESET to ground through a 100Ohm resistor.
8
DSI
Must be wired to the target processor. The USB TAP emulator
drives the TDI output with up to 50mA.
9
VDD
Must be wired to the target. The USB TAP emulator uses this
signal to determine if power is applied to the target. The signal
is also used as a voltage reference for the signals driven by
the USB TAP emulator (BKPT, DSCLK, RESET, DSI, and
TEA).
10
DSO
Must be wired to the target processor. It is an input to the USB
TAP.
11
GND
Must be wired to the target. GND is connected directly the
USB TAP ground inside the USB TAP.
12
PST3
Need not be wired to the target. The USB TAP does not
currently use this signal.
13
PST2
Need not be wired to the target. The USB TAP does not
currently use this signal.
14
PST1
Need not be wired to the target. The USB TAP does not
currently use this signal.
15
PST0
Need not be wired to the target. The USB TAP does not
currently use this signal.
16
DDATA3
Need not be wired to the target. The USB TAP does not
currently use this signal.
17
DDATA2
Need not be wired to the target. The USB TAP does not
currently use this signal.
18
DDATA1
Need not be wired to the target. The USB TAP does not
currently use this signal.
19
DDATA0
Need not be wired to the target. The USB TAP does not
currently use this signal.
20
GND
Must be wired to the target. GND is connected directly the
USB TAP ground inside the USB TAP.
Table C.2 CodeWarrior USB TAP for BDM Signal Recommendations and Requirements
BDM
Pin
Signal
Mnemonic
Requirement
U SB_TA P.book Page 35 Thursday, N ovem ber 10, 2005 2:27 PM
