Summary
Core Reference
CR0162 (v2.0) March 10, 2008
This document provides information on Altium Designer's Wishbone wrapper support
for the discrete Sharp Bluestreak® LH79520 – a fully integrated 32-bit System-on-
Chip (SoC), based on an ARM720T 32-bit RISC processor core.
Altium Designer's ARM720T_LH79520 component is a 32-bit Wishbone-compatible RISC
processor.
The ARM720T macrocell within the
physical LH79520 is built around an
ARM7TDMI-S core processor. This
processor is an implementation of the
ARM architecture v4T.
Although placed in an Altium Designer-based FPGA project just like any other 32-bit
processor component, the ARM720T_LH79520 is essentially a Wishbone-compliant wrapper
that allows communication with, and use of, the discrete ARM720T processor encapsulated
within the Sharp Bluestreak LH79520 device. You can think of the wrapper as being the
'means' by which to facilitate use of external memory and peripheral devices – defined within an FPGA – with the discrete
processor.
The ARM720T_LH79520 wrapper can be used in FPGA designs targeting any physical FPGA device – you are not constrained
to a particular vendor or platform.
Features
• 3-stage pipelined RISC processor
• 4GByte address space
• 32-bit ARM instruction set
• Wishbone I/O and memory ports for simplified peripheral connection
Code written for the ARM720T is
binary-compatible with other members
of the ARM7 family of processors. It is
also forward-compatible with ARM9,
ARM9E, and ARM10 processor
families.
• Full Viper-based software development tool chain – C compiler/assembler/source-level
debugger/profiler
• C-code compatible with other Altium Designer 8-bit and 32-bit Wishbone-compliant
processors, for easy design migration.
For further information on ARM720T features, refer to the following documents, available from
www.arm.com:
• ARM720T Technical Reference Manual
• ARM7TDMI-S Technical Reference Manual
For further information on LH79520 features, refer to the following documents, available from www.sharpsma.com:
• LH79520 Product Brief
• LH79520 Data Sheet
• LH79520 System-on-Chip User's Guide
Available Devices
From a schematic document, the ARM720T_LH79520 device can be found in the FPGA Processors integrated library (FPGA
Processors.IntLib), located in the \Library\Fpga folder of the installation.
From an OpenBus System document, the ARM720T_LH79520 component can be found in the Processor Wrappers region of
the OpenBus Palette panel.
CR0162 (v2.0) March 10, 2008 1