NEC V850E/RS1 User Manual page 645

(2) Status in CAN stop mode
• The CAN module is in one of the following states after it enters the CAN stop mode.
• The internal operating clock is stopped and the power consumption is minimized.
• To wake up the CAN module from the CPU, data can be written to PSMODE[1:0] of the CAN
• The CAN module registers can be read, except for CnLIPT, CnRGPT, CnLOPT, and CnTGPT.
• The CAN message buffer registers cannot be written or read.
• An initialization mode transition request is not acknowledged and is ignored.
(3) Releasing CAN stop mode
The CAN stop mode can only be released by writing 01B to the PSMODE1 and PSMODE0 bits.
After releasing the CAN stop mode, the CAN module enters the CAN sleep mode.When the initial-
ization mode is requested while the CAN module is in the CAN stop mode, that request is ignored;
the CPU has to release the stop mode and subsequently the CAN sleep mode before entering into
initialization mode. It is impossible to enter another operation mode directly from the CAN stop
mode without entering the CAN sleep mode, the request will be ignored.
Remark:
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Chapter 16 FCAN Controller
module control register (CnCTRL), but nothing can be written to other CAN module registers or
bits.
n = 0, 1
m = 0 to 31
User's Manual U16702EE3V2UD00 645