Renesas R5S72624 Manual De Usuario

 
Section 20   Controller Area Network 

Page 1002 of 2108 

 

R01UH0134EJ0400  Rev. 4.00 

 

 Sep 

24, 

2014 

SH7262 Group, SH7264 Group

Please note that for Mailbox 30 TTW is fixed to '01', Offset to '00' and rep_factor to ‘0’.The 
following tables report the combinations for the rep_factor and the offset.  

3'b000 Every 

basic cycle (initial value) 

3'b001 Every 

two 

basic cycle 

3'b010 Every 

four 

basic cycle 

3'b011 Every 

eight 

basic cycle 

3'b100 Every 

sixteen 

basic cycle 

3'b101 

Every thirty two basic cycle 

3'b110 

Every sixty four basic cycle (once in system matrix) 

3'b111 Reserved 

 

The Offset Field determines the first cycle in which a Time Triggered Mailbox may start 
transmitting its Message.  

6'b000000 

Initial Offset = 1

st

 Basic Cycle (initial value) 

6'b000001 

Initial Offset = 2

nd

 Basic Cycles 

6'b000010 

Initial Offset = 3

rd

 Basic Cycles 

6'b000011 

Initial Offset = 4

th

 Basic Cycles 

6'b000100 

Initial Offset = 5

th

 Basic Cycles 

 

 

 

 

6'b111110 

Initial Offset = 63

rd

 Basic Cycles 

6'b111111 

Initial Offset = 64

th

 Basic Cycles 

 

The following relation must be maintained: 

Cycle_Count_Maximum + 1 >= Repeat_Factor > Offset 

 Cycle_Count_Maximum 

 

= 

2

CMAX

 - 1 

 Repeat_Factor 

= 

2

rep_factor