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Infineon Technologies TC1796 User Manual

Infineon Technologies TC1796
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TC1796
System Units (Vol. 1 of 2)
LMB External Bus Unit
User’s Manual 13-1 V2.0, 2007-07
EBU, V2.0
13 LMB External Bus Unit
The External Bus Unit (EBU) of the TC1796 controls the transactions between external
memories or peripheral units, and the internal memories and peripheral units. The basic
interfaces of the EBU are shown in Figure 13-1.
Figure 13-1 EBU Interface Diagram
The EBU is internally connected to the Program Local Memory Bus (PLMB). This
configuration makes it possible to get fast access times, especially when using external
Burst Flash memory devices.
The following features are supported by the EBU:
64-bit internal PLMB interface
32-bit external demultiplexed bus interface
Support for Intel-style and Motorola-style interface signals
Support for Burst Flash memory devices
Flexibly programmable access parameters
Programmable chip select lines
Arbitration support for external EBU bus master devices
Little-endian and Big-endian support.
Scalable external bus frequency
Derived from PLMB frequency (f
CPU
) divided by 2, 3, or 4
Maximum 75 MHz
Data buffering supported
Code prefetch buffer
Read/write buffer
External
Bus
Unit
EBU
MCA05712
32
To/From Program
Local Memory Bus
Data Bus
Address Bus
Control Lines
Chip Select
Lines
Clock Output
Clock Input
24
13
5
64

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Infineon Technologies TC1796 Specifications

General IconGeneral
BrandInfineon Technologies
ModelTC1796
CategoryController
LanguageEnglish