Renesas RX Series User Manual

R01UH0823EJ0100 Rev.1.00 Page 1276 of 1823
Jul 31, 2019
RX23W Group 36. CAN Module (RSCAN)
36.6 Test Function
The test function is classified into communication tests and global tests.
Communication tests: Performed for each channel.
 Standard test mode
 Listen-only mode
 Self-test mode 0 (external loopback mode)
 Self-test mode 1 (internal loopback mode)
Global tests: Performed in entire module
 RAM test (read/write test)
36.6.1 Standard Test Mode
Standard test mode allows CRC test.
36.6.2 Listen-Only Mode
Listen-only mode allows reception of data frames and remote frames. Only recessive bits are transmitted on the CAN
bus, and the ACK bit, overload flag, and active error flag are not transmitted. Listen-only mode is available for detecting
the communication speed.
Do not make a transmit request from any buffer in listen-only mode.
Figure 36.10 shows the connection when listen-only mode is selected.
Figure 36.10 Connection When Listen-Only Mode is Selected
CTXD0
Recessive level
CTXD0
(internal)
CRXD0
(internal)
CRXD0
Transmits the ACK bit, overload flag,
and active error flag.

Renesas RX Series Specifications

General

Brand	Renesas
Model	RX Series
Category	Microcontrollers
Language	English