TC1767 Datasheet, PDF (55/126 Pages) Infineon Technologies AG – 32-Bit Single-Chip Microcontroller

TC1767
Introduction
• Invalidation of the Data Cache (maintaining write-back data) can be done
concurrently with the same SFR.
• 256 KB additional Overlay RAM on Emulation Device.
• The 256 KB Trace memory of the Emulation Device can optionally be used for
Overlay also.
• A dedicated trigger SFR with 32 independent status bits is provided to centrally post
requests from application code to the host computer.
• The host is notified automatically when the trigger SFR is updated by the TriCore or
PCP. No polling via a system bus is required.
2.5.4 Tool Interfaces
Three options exist for the communication channel between Tools (e.g. Debugger,
Calibration Tool) and TC1767:
• Two wire DAP (Device Access Port) protocol for long connections or noisy
environments.
• Four (or five) wire JTAG (IEEE 1149.1) for standardized manufacturing tests.
• CAN (plus software linked into the application code) for low bandwidth deeply
embedded purposes.
• DAP and JTAG are clocked by the tool.
• Bit clock up to 40 MHz for JTAG, up to 80 MHz for DAP.
• Hot attach (i.e. physical disconnect/reconnect of the host connection without reset of
the TC1767) for all interfaces.
• Infineon standard DAS (Device Access Server) implementation for seamless,
transparent tool access over any supported interface.
• Lock mechanism to prevent unauthorized tool access to critical application code.
2.5.5 Self-Test Support
Some manufacturing tests can be invoked by the application (e.g. after power-on) if
needed:
• Hardware-accelerated checksum calculation (e.g. for Flash content).
2.5.6 FAR Support
To efficiently locate and identify faults after integration of a TC1767 into a system special
functions are available:
• Boundary Scan (IEEE 1149.1) via JTAG and DAP.
• SSCM (Single Scan Chain Mode¹⁾) for structural scan testing of the chip itself.
1) This function requires access to some device pins (e.g. TESTMODE) in addition to those needed for OCDS.
Data Sheet
51
V1.3, 2009-09