h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 597

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 Controller Area Network (HCAN)
15.3.2
Initialization after Hardware Reset
After a hardware reset, the following initialization processing should be carried out:
• IRR0 bit in the interrupt register (IRR) clearing
• Bit rate setting
• Mailbox transmit/receive settings
• Mailbox (RAM) initialization
• Message transmission method setting
These initial settings must be made while the HCAN is in bit configuration mode. Configuration
mode is a state in which the reset request bit (MCR0) in the master control register (MCR) is 1 and
the reset status bit in the general status register (GSR) is also 1 (GSR3 = 1). Configuration mode is
exited by clearing the reset request bit in MCR to 0; when MCR0 is cleared to 0, the HCAN
automatically clears the reset state bit (GSR3) in the general status register (GSR). The power-up
sequence then begins, and communication with the CAN bus is possible as soon as the sequence
ends. The power-up sequence consists of the detection of 11 consecutive recessive bits.
Rev. 5.00 Sep 22, 2005 page 571 of 1136
REJ09B0257-0500