2.16 JTAG/COP port
The common on-chip processor (COP) is part of the T1040 JTAG module and is
implemented as a set of additional instructions and logic. This port can connect to a
dedicated probe and debugger for extensive system debugging. Freescale offers
CodeWarrior as debugger and CodeWarrior TAP as probe. Several third-party probes in
the market can also connect to the host computer through the Ethernet port or USB port.
A setup using a USB based probe is shown in the figure below.
PC
USB Port
USB
probe
T1040RDB
COP Port
Figure 2-17. Debugger connection
The 16-pin generic header connector carries the COP/JTAG signals and the additional
signals for system debugging. The pin-out of this connector is shown in the figure below.
TDO
TDI
NC
TCK
TMS
SRESET_B
HRESET_B
CKS
TP_OUT
GND
NC
GND
NC
CKSTP_IN
VDD_SENSE
TRST_B
NC
1
Figure 2-18. JTAG header
Chapter 2 Architecture
QorIQ T1040 Reference Design Board User Guide, Rev. 0, 06/2015
Freescale Semiconductor, Inc. 33
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