TC1796 Datasheet, PDF (75/134 Pages) Infineon Technologies AG – 32-Bit Single-Chip Microcontroller TriCore

TC1796
Functional Description
OCDS Level 1 Debug Support
The OCDS Level 1 debug support is mainly assigned for real-time software debugging
purposes which have a demand for low-cost standard debugger hardware.
The OCDS Level 1 debug support is based on a JTAG interface which can be used by
the external debug hardware to communicate with the system. The on-chip Cerberus
module controls the interactions between the JTAG interface and the on-chip modules.
The external debug hardware may become master of the internal buses and read or
write the on-chip register/memory resources. The Cerberus also allows to define
breakpoint and trigger conditions as well as to control user program execution (run/stop,
break, single-step).
OCDS Level 2 Debug Support
The OCDS Level 2 debug support allows to implement program tracing capabilities for
enhanced debuggers by extending the OCDS Level 1 debug functionality with an
additional 16-bit wide trace port with trace clock. With the trace extension the following
four trace capabilities are provided (only one of the four trace capabilities can be
selected at a time):
• Trace capability of the CPU program flow
• Trace capability of the PCP2 program flow
• Trace capability of the DMA Controller transaction requests
• Trace capability of the DMA Controller move engine status information
OCDS Level 3 Debug Support
The OCDS Level 3 debug support is based on a special emulation device, the
TC1796ED, which provides additional features required for high-end emulation
purposes. The TC1796ED is a device which includes the TC1796 product chip and
additional emulation extension hardware in a package with the same footprint as the
TC1796.
Data Sheet
75
V1.0, 2008-04