H8SSLASH2224 datasheet(588/1071 Pages) RENESAS

Il numero della parte	H8S/2224

Spiegazioni elettronici	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

PDF	1071 Pages

Scroll/Zoom	100%

Produttore elettronici	RENESAS [Renesas Technology Corp]

Homepage	http://www.renesas.com

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588 / 1071 page

Section 14 IEBus™ Controller (IEB) [H8S/2258 Group]

Rev. 5.00 Aug 08, 2006 page 502 of 982

REJ09B0054-0500

14.3.3

IEBus Master Control Register (IEMCR)

IEMCR sets communications conditions for master communications (selection of broadcast or

normal communications, retransmission counts at arbitration loss, and control bits value). It is not

necessary to set this register for slave communications.

Bit

Bit Name

Initial

Value

R/W

Description

R/W

Broadcast/Normal Communications Select

Selects broadcast or normal communications for master

communications.

0: Broadcast communications

1: Normal communications

RN2

RN1

RN0

R/W

Retransmission Counts

Set the number of times retransmission is performed when

arbitration is lost in master communications. If arbitration is

lost for a specified number of times, the TxE flag in IETSR

and the AL flag in IETEF are set and transmission ends

with a transmit error. If arbitration is won during

retransmission, the retransmission count is automatically

restored to the initial setting after master address transfer.

000: 0

001: 1

010: 2

011: 3

100: 4

101: 5

110: 6

111: 7

H8S/2224 Scheda tecnica(PDF) 588 Page - Renesas Technology Corp