User manual

TB-7Z-020-EMC Hardware User Manual
29
Rev.1.03
7.12.1. VTREF SEL Jumper
There is a 2 pin jumper (J5) for VTREF power supply.
Figure 7-24 ARM PJTAG Port’s VTREF SEL Jumper
Table 7-13 Jumper Function Table
Jumper
#
Description
Status
Function
J4
ARM Trace Port
Soft-reset enable
Short
Enable Soft-reset from ARM Trace Port
Open
Soft-reset is only generated by SW8
J5
ARM Trace Port
VTREF power
Supply enable
Short
Enable 3.3V output to ARM Trace Port’s VTREF pin.
Open
Only connect a 0.1uF capacitor to ARM Trace Port’s
VTREF pin.