SH7672 datasheet(199/1292 Pages) RENESAS

Part #	SH7672

Description	32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

PDF	1292 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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199 / 1292 page

Section 7

Bus State Controller (BSC)

Rev. 1.00 Nov. 14, 2007 Page 173 of 1262

REJ09B0437-0100

Name

I/O

Function

WE1/DQMLU/WE

Output Indicates that D15 to D8 are being written to.

Connected to the byte select signal when a SRAM with byte

selection is connected.

Functions as the select signals for D15 to D8 when SDRAM is

connected.

Functions as a strobe signal for indicating memory write cycles when

PCMCIA is used.

WE0/DQMLL

Output Indicates that D7 to D0 are being written to.

Connected to the byte select signal when a SRAM with byte

selection is connected.

Functions as the select signals for D7 to D0 when SDRAM is

connected.

RAS

Output Connects to

RAS pin when SDRAM is connected.

CAS

Output Connects to

CAS pin when SDRAM is connected.

CKE

Output Connects to CKE pin when SDRAM is connected.

WAIT

Input

External wait input

IOIS16

Input

Indicates 16-bit I/O of PCMIA.

Enabled only in little endian mode. The pin should be driven low in

big endian mode.

MD_BW

Input

Selects bus width of area 0 and initial bus width of areas 3 to 6.

SH7672 Datasheet(PDF) 199 Page - Renesas Technology Corp