HD6417618 datasheet(429/646 Pages) RENESAS

Part #	HD6417618

Description	32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series

PDF	646 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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Section 15 Host Interface (HIF)

Rev. 6.00 Jun. 12, 2007 Page 397 of 610

REJ09B0131-0600

Bit

Bit Name

Initial

Value

R/W

Description

BYTE1

BYTE0

R/W*

Internal Register Byte Specification

These bits specify in advance the target word location

before the external device accesses a register among

HIFGSR, HIFSCR, HIFMCR, HIFIICR, HIFEICR,

HIFADR, HIFDATA, and HIFBCR.

• When HIFSCR.BO = 0

00: Bits 31 to 16 in register

01: Setting prohibited

10: Bits 15 to 0 in register

11: Setting prohibited

• When HIFSCR.BO = 1

00: Bits 15 to 0 in register

01: Setting prohibited

10: Bits 31 to 16 in register

11: Setting prohibited

However, when HIFDATA is selected using bits REG5 to

REG0, each time reading or writing of HIFDATA occurs,

these bits change according to the following rule.

→ 10 → 00 → 10... repeated

Note:

This bit can be only written to by an external device while the HIFRS pin is held high. It

cannot be written to by the on-chip CPU.

HD6417618 Datasheet(PDF) 429 Page - Renesas Technology Corp