OnCE Connector Information
40
USB TAP Users Guide
11
VDD
Must be wired to the target. The USB TAP emulator uses
this signal to determine if power is applied to the target. This
signal is also used as a voltage reference for the signals
driven by the USB TAP emulator (TDI, TCK, TMS, RESET,
and TRST).
12
Reserved
Not required for emulation.
13
Reserved
Not required for emulation.
14
TRST
Must be wired to the target processor. The USB TAP
emulator drives the TRST output with up to 50 mA. The
TRST trace run should be kept short and maintain a “two-
signal-width” spacing from any other parallel dynamic signal
trace.
Table D.2 CodeWarrior USB TAP for OnCE Signal Recommendations and Requirements
OnCE
Pin
Signal
Mnemonic
Requirement
U SB_TA P.book Page 40 Thursday, N ovem ber 10, 2005 2:27 PM
