Freescale Semiconductor NXP CodeWarrior USB TAP, Руководство пользователя, Страница: 38 / 54

OnCE Connector Information
38 USB TAP Users Guide
1
4.7KOhm pull-up to buffered VDD.
2
100KOhm pull-up to buffered VDD.
Table D.1 CodeWarrior USB TAP for OnCE Signal Directions
OnCE
Pin Signal
Mnemonic Signal
Direction Description
1 TDI From USB TAP
connector 50mA driver
2 GND - n/a -
3 TDO From target 30pF load
4 GND - n/a -
5 TCK From USB TAP
connector 50mA driver
6
GND
- n/a -
7 Reserved From USB TAP
connector 50mA driver
8 No-Connect/
Key - n/a -
9 RESET Bi-directional Open-drain. 100Ohm to ground when
asserted by USB TAP, 35pF load when
not asserted
1
10 TMS From USB TAP
connector 50mA driver
11 VDD From target 2MOhm pull-down, plus 0.01uF load
12 Reserved Bi-directional Open-drain, 100Ohm to ground when
asserted by USB TAP emulator, 35pF
load when not asserted
1
13 Reserved Bi-directional Open-drain, 100Ohm to ground when
asserted by USB TAP emulator, 35pF
load when not asserted
1
14 TRST From USB TAP
connector
50mA driver
2
U SB_TA P.book Page 38 Thursday, N ovem ber 10, 2005 2:27 PM