User's Manual l MBa8MPxL UM 0100 l © 2022, TQ-Systems GmbH
Page 30
3.4.6
JTAG
®
The JTAG
®
port of the i.MX 8M Plus is routed to a standard ARM
®
10-pin JTAG
®
connector (X22) on the MBa8MPxL.
JTAG_SRST# is connected to RESET_IN# via a buffer. The same reset can be executed as with reset button S7.
The JTAG
®
interface is not ESD protected.
TQMa8MPxL
10-pin
Header
JTAG_TCK
JTAG_TDI
JTAG_TDO
JTAG_TMS
Figure 23: Block diagram JTAG
The following table shows the JTAG
®
connector pinout.
Table 26:
Pinout JTAG
®
pin header, X22
Pin
Signal
Remark
1
V
ref
/ VCC
3.3 V, optional: 1.8 V
2
JTAG_TMS
10 kΩ PU, (NP)
3
GND
–
4
JTAG_TCK
10 kΩ PU, 10 kΩ PD, both (NP)
5
GND
–
6
JTAG_TDO
–
7
Key
(NC)
8
JTAG_TDI
10 kΩ PU, (NP)
9
GND_DETECT
10 kΩ PD
10
JTAG_SRST#
RESET_IN#, 10 kΩ PU
4.
SOFTWARE
No software is required for the MBa8MPxL. Suitable software is only required on the TQMa8MPxL and is not a part of this
Preliminary User's Manual. More information can be found in the
TQ-Support Wiki for the TQMa8MPxL