Input/Output Pins; Register Descriptions; Table 15.1 Hcan Pins - Renesas H8S Series Hardware Manual

15.2

Input/Output Pins

Table 15.1 shows the HCAN's pins.
When using HCAN pins, settings must be made in the HCAN configuration mode (during
initialization: MCR0 = 1 and GSR3 = 1).

Table 15.1 HCAN Pins

Name
HCAN transmit data pin
HCAN receive data pin
A bus driver is necessary for the interface between the pins and the CAN bus. A Philips
PCA82C250 compatible model is recommended.
15.3

Register Descriptions

The HCAN has the following registers. For details on register addresses and register states during
each process, refer to appendix A, On-Chip I/O Register.
• Master control register (MCR)
• General status register (GSR)
• Bit configuration register (BCR)
• Mailbox configuration register (MBCR)
• Transmit wait register (TXPR)
• Transmit wait cancel register (TXCR)
• Transmit acknowledge register (TXACK)
• Abort acknowledge register (ABACK)
• Receive complete register (RXPR)
• Remote request register (RFPR)
• Interrupt register (IRR)
• Mailbox interrupt mask register (MBIMR)
• Interrupt mask register (IMR)
• Receive error counter (REC)
• Transmit error counter (TEC)
• Unread message status register (UMSR)
• Local acceptance filter mask H (LAFMH)
Abbreviation Input/Output
HTxD Output
HRxD Input
Section 15 Controller Area Network (HCAN)
Function
CAN bus transmission pin
CAN bus reception pin
Rev. 6.00 Mar 15, 2006 page 387 of 570
REJ09B0211-0600