HD6417618A datasheet(426/646 Pages) RENESAS

部件名	HD6417618A

功能描述	32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series

PDF	646 Pages

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制造商	RENESAS [Renesas Technology Corp]

网页	http://www.renesas.com

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Section 15 Host Interface (HIF)

Rev. 6.00 Jun. 12, 2007 Page 394 of 610

REJ09B0131-0600

15.3

Parallel Access

15.3.1

Operation

The HIF can be accessed by combining the

HIFCS, HIFRS, HIFWR, and HIFRD pins. Table 15.2

shows the correspondence between combinations of these signals and HIF operations.

Table 15.2

HIF Operations

HIFCS

HIFRS

HIFWR

HIFRD

Operation

No operation (NOP)

Read from register specified by HIFIDX[7:0]

Write to register specified by HIFIDX[7:0]

Read from status register (HIFGSR[7:0])

Write to index register (HIFIDX[7:0])

No operation (NOP)

Setting prohibited

[Legend]

×: Don't care

15.3.2

Connection Method

When connecting the HIF to an external device, a method like that shown in figure 15.2 should be

used.

External device

A02

D15 to D00

HIF

HIFCS

HIFRS

HIFWR

HIFRD

HIFD15 to HIFD00

Figure 15.2 HIF Connection Example

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