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TC1797 Datasheet, PDF (60/190 Pages) Infineon Technologies AG – 32-Bit Single-Chip Microcontroller | |||
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TC1797
Introduction
2.5.9 External Bus Interface
The External Bus Unit (EBU) of the TC1797 controls the accesses from peripheral units
to external memories.
Features:
⢠64-bit internal LMB interface
⢠32-bit demultiplexed / 16-bit multiplexed external bus interface (3.3V, 2.5V)
â Support for Intel-style and Motorola-style interface signals
â Support for Burst Flash memory devices
â Flexibly programmable access parameters
â Programmable chip select lines
â Little-endian support
⢠Examples for memories that has to be supported
â Burst Flash:
â Spansion: S29CD016, S29CD032
â Spansion: S29CL032J1RFAM010 @3,3V
â ST: M58BW016, M58BW032
â ST: M58BW032GB B45ZA3T @3,3V
â Flash (for 16 bit muxed mode):
â http://www.spansion.com/products/Am29LV160B.html
â SRAM (for 16 bit muxed mode):
â http://www.idt.com/products/files/10372/71V016saautomotive.pdf
â http://213.174.55.51/zmd.biz/pdf/ UL62H1616A.pdf
â IDT 71V416YS15BEI
⢠Scalable external bus frequency
â Derived from LMB frequency (fCPU) divided by 1, 2, 3, or 4
â Maximum 75 MHz1)
⢠Data buffering supported
â Code prefetch buffer
â Read/write buffer
2.6
On-Chip Debug Support (OCDS)
The TC1797 contains resources for different kinds of âdebuggingâ, covering needs from
software development to real-time-tuning. These resources are either embedded in
specific modules (e.g. breakpoint logic of the TriCore) or part of a central peripheral
(known as CERBERUS).
1) Maximum frequency of today available automotive Burst Flash devices.
Data Sheet
56
V1.1, 2009-04
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