Debug And Calibration Interface (Dci) - STMicroelectronics SPC572L series Reference Manual

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11.2.1

Debug and Calibration Interface (DCI)

The Debug and Calibration Interface (DCI) module provides debug and calibration features.
The DCI module includes the device JTAG controller, the IEEE 1149.7 interface. The DCI
provides the following features:
•
Debug mode enable control for connected tool or software
•
IEEE 1149.1 and 1149.7 controllers
•
Debug break and cross-triggering control
•
Synchronous restart control for CPU when exiting debug mode
•
Tool hot plug capability
• Security access control
•
Debug and calibration features may operate simultaneously
The DCI sends and receives the EVTI[1:0] and EVTO[1:0] signals to/from the core and other
modules.
signals for the core. For example, EVTI[0] are outputs of the JTAGM and SPU, and inputs to
the core and GTM.
Signal
EVTI[0]
EVTI[1]
EVTO[0]
EVTO[1]
Core debug event
DCI cross triggering
The DCI sends the system debug signal, ipg_debug, to the following modules. For details
regarding module functionality during system debug, refer to the individual module chapter.
•
CAN
•
LFAST (Interprocessor Communications instance only)
•
DSPI
•
eDMA
•
GTMINT
•
PIT
•
SARADC
•
SDADC
•
SRX
•
SSCM
•
STM
•
SWT
Table 78 summarizes the sources and destinations of EVTI, EVTO, and relative
Table 78. DCI signals
Core
I
—
O
—
I
O
DocID027809 Rev 4
GTM NAR
I —
— —
O —
— —
— —
O —
Calibration and Debug
JTAGM SPU
O I/O
O I/O
I I/O
I I/O
— —
— —
DTS
—
—
—
O
—
—
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