TLE9255WLC datasheet(42/100 Pages) INFINEON

tên linh kiện	TLE9255WLC

Giải thích chi tiết về linh kiện	HS CAN Transceiver with Partial Networking

PDF	100 Pages

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nhà sản xuất	INFINEON [Infineon Technologies AG]

Trang chủ	http://www.infineon.com

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42 / 100 page

Data Sheet

Rev. 1.02 2018-02-02

TLE9255W

CAN Partial Networking

7.2

Activation of Selective Wake

Figure 39 shows the recommended way to activate the selective wake function in the TLE9255W.

Figure 39

Activation of selective wake function

The selective wake unit will acquire CAN

bus synchronization within 4 classical

CAN frames. On the first successfully

synchronized classical CAN frame the

SYNC bit is set to 1.

Set SWK wake data. e.g.

ID, ID_Mask, DATA

Power on Reset

SWK Unit is not enabled

Check

SYSERR

Enable Selective Wake

(SWK_EN = 1)

Confirm SWK configuration

(CFG_VAL = 1)

Check

WK_STAT

Change into the Sleep

Mode by a SPI command

No WUP, LWU or WUF pending

Any mode

SWK Unit is enabled

Clear WK_STAT register

WUP, LWU or WUF

pending

MC decides how to procceed

MC still wants to change

into Sleep Mode

SWK

Config Error

(CFG_VAL = 0)

Yes

Frame could not be detected

by the selective wake unit. MC

must make a diagnosis to find

the reason (e.g. wrong

baudrate).

SWK configuration must be

checked by MC

Set Baudrate for the SWK

unit

Transceiver enters Sleep

Mode

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