SH7059 Datasheet, PDF (574/1042 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

17. Controller Area Network-II (HCAN-II)
17.7.10 HCAN-II Port Settings
The HCAN-II port settings must be made in configuration mode or before entering the mode. For details on port settings,
see section 22, Pin Function Controller(PFC). This LSI has the HCAN-II with two channels and there are two methods of
using the HCAN-II.
• 32-buffer HCAN-II with two channels
• 64-buffer HCAN-II with one channel*
Note: * If you set up the HCAN-II interface as a single channel with 64 buffers, be sure to read section 17.8, Usage
Notes.
Following figures show examples of the 32-buffer HCAN-II with two channels and 64-buffer HCAN-II with one channel.
HCAN0
(32 buffers)
HTxD0
HRxD0
PB10
PB11
HCAN1
(32 buffers)
HTxD1
HRxD1
PL10
PL11
Figure 17.14 32-Buffer HCAN-II with Two Channels
HCAN0
(32 buffers)
HTxD0
HRxD0
HCAN1
(32 buffers)
HTxD1
HRxD1
PL10
PL11
Figure 17.15 64-Buffer HCAN-II with One Channel
64 buffer HCAN-II with one channel is carried out, following should be taken notice.
1. When message is transmitted to the CAN bus without connecting to other node, ACK error will not be occurred. For
example, when message is transmitted from HCAN0 in above diagram, HCAN1 transmits ACK in ACK field.
Rev.3.00 Mar. 12, 2008 Page 484 of 948
REJ09B0177-0300