H8SXSLASH1663R datasheet(252/1504 Pages) RENESAS

部品番号	H8SX/1663R

部品情報	Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series

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メーカー	RENESAS [Renesas Technology Corp]

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Section 9 Bus Controller (BSC)

Rev. 2.00 Sep. 24, 2008 Page 220 of 1468

REJ09B0412-0200

9.3

Bus Configuration

Figure 9.5 shows the internal bus configuration of this LSI. The internal bus of this LSI consists of

the following three types.

• Internal system bus 1

A bus that connects the CPU, DTC, DMAC, on-chip RAM, on-chip ROM, internal peripheral

bus, and external access bus.

• Internal system bus 2

A bus that connects the EXDMAC and external access bus

• Internal peripheral bus

A bus that accesses registers in the bus controller, interrupt controller, DMAC, and EXDMAC,

and registers of peripheral modules such as SCI and timer.

• External access bus

A bus that accesses external devices via the external bus interface.

CPU

DTC

DMAC

synchronization

Bus controller,

interrupt controller,

power-down controller

External bus

interface

Peripheral

functions

On-chip

RAM

On-chip

ROM

Internal system bus

Internal peripheral bus

Write data

buffer

Write data

buffer

External access bus

Internal system bus

EXDMAC

Figure 9.5 Internal Bus Configuration

H8SX/1663R データシート(PDF) 252 Page - Renesas Technology Corp

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