32186 datasheet(682/1032 Pages) RENESAS

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CAN MODULE

13-72

32185/32186 Group Hardware Manual

Rev.1.10 REJ09B0235-0110 May 15, 07

Figure 13.2.25 CANCKS Setting Procedure

If a write cycle to any other area occurs

during this interval, the value that was

set in the CANCKS bits is not reflected.

CANCKSP

"1"

CANCKSP

"0"

CANCKS

Set value

• Example of correct settings

• Cases where settings have no effect

Because a write cycle to other area exists,

the set value is not reflected. (Note 1)

CANCKSP

"1"

Write to other area

(1)

(2)

CANCKSP

"1"

CANCKSP

"1"

Because these two consecutive writes comprise

a pair, the next set value is not reflected.

(Note 1)

Note 1: The writing cycle to the other area is the writing cycle from CPU, DMA, SDI (tool), NBD to any other area.

The writing cycle from RTD and DRI do not effect.

Note:

• Set this register under the status CAN module is reset.

CANCKSP

"0"

CANCKS

Set value

CANCKSP

"0"

CANCKS

Set value

13.2 CAN Module Related Registers

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