Freescale Semiconductor NXP CodeWarrior USB TAP, Руководство пользователя, Страница: 37 / 54

37 USB TAP Users Guide
D
OnCE Connector
Information
The CodeWarrior USB TAP for OnCE has a 14-pin connector. The CodeWarrior USB
TAP for OnCE automatically supports target signal levels from 1.8V to 3.3V.
Figure D.1 shows the pin assignments of the CodeWarrior USB TAP for OnCE connector.
Table D.1 lists OnCE signal names, direction, pin numbers, descriptions, and drive
capabilities for the CodeWarrior USB TAP for OnCE Connector.
Table D.2 provides a general description of each OnCE signal and the CodeWarrior USB
TAP for OnCE operational requirements.
NOTE All OnCE signals must meet accepted standards for OnCE signal design. To
ensure proper and stable operation between the CodeWarrior USB TAP for
OnCE and the target, the OnCE signals must meet the requirements listed in
Table D.2 .
Figure D.1 CodeWarrior USB TAP for Once Connector Pin Assignments
TCK
Reserved
RESET
3
5
7
9
Reserved
13
VDD
11
TDO
TDI GND
GND
TMS
2
4
6
8
10
No-Connect/Key
TRST
14
Reserved
12
GND
1
U SB_TA P.book Page 37 Thursday, N ovem ber 10, 2005 2:27 PM