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Debug Probes Hardware and Software
32
SLAU647L – July 2015 – Revised February 2018
Copyright © 2015–2018, Texas Instruments Incorporated
MSP Debuggers
5.7.3.2
Pin States After Power Up
describes the electrical state of every JTAG pin after debug probe power up.
Table 11. MSP-FET430UIF Pin States
Pin
Name
After Power-Up
When JTAG Protocol is
Active
When Spy-Bi-Wire
Protocol is Active
1
TDO/TDI
Hi-Z, pulled up to 3.3 V
In, TDO
In and Out, SBWTDIO
2
VCC_TOOL
3.3 V
Target V
CC
Target V
CC
3
TDI/VPP
Hi-Z, pulled up to 3.3 V
Out, TDI
Hi-Z, pulled up to V
CC
4
VCC_TARGET
In, external V
CC
sense
In, external V
CC
sense
In, external V
CC
sense
5
TMS
Hi-Z, pulled up to 3.3 V
Out, TMS
Hi-Z, pulled up to V
CC
6
N/C
N/C
N/C
N/C
7
TCK
Hi-Z, pulled up to 3.3 V
Out, TCK
Out, SBWTCK
8
TEST/VPP
Out, Ground
Out, TEST
Hi-Z, pulled up to V
CC
9
GND
Ground
Ground
Ground
10
N/C
N/C
N/C
N/C
11
RST
Out, V
CC
Out, RST
Ground
12
N/C
N/C
N/C
N/C
13
N/C
N/C
N/C
N/C
14
N/C
N/C
N/C
N/C