SH7672 datasheet(31/1292 Pages) RENESAS

tên linh kiện	SH7672

Giải thích chi tiết về linh kiện	32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

PDF	1292 Pages

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nhà sản xuất	RENESAS [Renesas Technology Corp]

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Section 1 Overview

Rev. 1.00 Nov. 14, 2007 Page 5 of 1262

REJ09B0437-0100

Classification

Module/Function Description

External bus

extension

Bus state

controller (BSC)

• Address space for five areas (64 Mbytes each) and 32-bit

external bus

• The following features settable independently for each

area:

 Bus size: 8, 16, or 32 bits (depending on area)

 Access wait cycle count

 Idle wait cycle setting (same area/different area)

 Supports SRAM, SRAM with byte selection, and

SDRAM by specifying memory to be connected for

each area

 Supports the PCMCIA interface

 Chip select signal output to an applicable area

(Timings of CS asserting and negating are selectable

by programming)

• SDRAM refreshing function

 Supports auto-refreshing mode and self-refreshing

mode

• SDRAM burst access function

DMA

Direct memory

access controller

(DMAC)

• Eight channels (External DMA requests available for two

of them)

• Can be activated by on-chip peripheral modules

• Burst mode and cycle steal mode

• Supports intermittent mode (16 or 64 cycles)

• Auto-reloading of transfer information

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