HD64F36034 datasheet(363/592 Pages) RENESAS

Part #	HD64F36034

Description	Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

PDF	592 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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363 / 592 page

Section 15 Controller Area Network for Tiny (TinyCAN)

Rev. 4.00 Mar. 15, 2006 Page 331 of 556

REJ09B0026-0400

HRXD

Bus idle

Message 1

Message 2

[4] Arbitration loss

[4] Clear MBn in TXPR and MBn in TXCR for message 1

[4] Set MBn in ABACK and EMPI in TCIRR1 for message 1

Transmission for message 1

cannot be cancelled by TXCR

Transmission for message 2

cannot be cancelled by TXCR

Internal arbitration for message 3

can be configurable

Internal arbitration for message 2 can be configurable

(Transmission settings can be changed by TXPR/TXCR)

[5] Internal arbitration for message 2

is determined after normal reception

has completed

If other Mailbox has a transmit

request, transmission is started at this

timing

[3] Set MBn in TXCR after internal arbitration

for message 1 has been determined

[2] Set TXPR

Message 1 reception

Bus idle

HTXD

MBn in TXPR

MBn in TXCR

MBn in ABACK

DART

EMPI in TCIRR1

MBn in TXACK

SOF

Arbitration

Control

Data

CRC

ACK

EOF

Intermission

SOF

Arbitration

ACK bit

Figure 15.9 Internal Arbitration at Reception Caused by CAN Bus Arbitration Loss

(MBn in TXCR = 1)

HD64F36034 Datasheet(PDF) 363 Page - Renesas Technology Corp

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