NEC 78K0R/KE3 User Manual page 438

Wakeup signal
frame
LIN Bus
Note 1
8 bits
T D3
X
(output)
Note 3
INTST3
Notes 1. The baud rate is set so as to satisfy the standard of the wakeup signal and data of 00H is transmitted.
2. A sync break field is defined to have a width of 13 bits and output a low level. Where the baud rate for
main transfer is N [bps], therefore, the baud rate of the sync break field is calculated as follows.
(Baud rate of sync break field) = 9/13 × N
By transmitting data of 00H at this baud rate, a sync break field is generated.
3. INTST3 is output upon completion of transmission. INTST3 is also output when SBF transmission is
executed.
Remark The interval between fields is controlled by software.
438
CHAPTER 11 SERIAL ARRAY UNIT
Figure 11-85. Transmission Operation of LIN
Sync break Sync field
field
13-bit SBF 55H
Note 2
transmission transmission
User's Manual U17854EJ9V0UD
Identification Data field Data field
field
Data Data Data
transmission transmission transmission
Checksum
field
Data
transmission