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8 data and remote frame – Rainbow Electronics T89C51CC01 User Manual

Page 80

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80

T89C51CC01

Rev. D – 17-Dec-01

15.8 Data and Remote
frame

Description of the different steps for:

Data frame,

Remote frame, with automatic reply,

Remote frame.

u u

u

u

u

0

1

x

0 0

u u

u

u

u

E

N

C

H

R

TR

R

P

LV

TX

O

K

R

X

O

K

0

1

x

0 0

c u

c

u

u

0

0

x

1 0

u c

c

u

u

0

0

x

0 1

DA

TA

FR

AM

E

Node A

Node B

E

N

C

H

R

TR

R

P

LV

TX

O

K

R

X

O

K

message object in reception

message object stay in reception

message object in transmission

message object stay in
transmission

u u

u

u

u

1

1

x

0 0

c u

u

u

c

0

1

x

1 0

u

c

c

u

u

0

0

x

0 1

REM

OTE

FRA

ME

DA

TA

FR

AM

E

u u

u

u

u

1

1

1

0 0

u u

u

c

c

0

1

0

0 0

c u

c

c

u

0

0

0

1 0

E

N

C

H

R

T

R

R

P

LV

T

X

O

K

R

X

O

K

E

N

C

H

R

T

R

R

P

LV

T

X

O

K

R

X

O

K

(im

me

dia

te)

message object in reception

message object in transmission

message object stay in transmission

message object in transmission

message object in reception

message object stay in

by CAN controller

by CAN controller

reception

u u

u

u

u

1

1

x

0 0

u u

u

u

u

E

N

C

H

R

T

R

R

P

LV

T

X

O

K

R

X

O

K

1

1

0

0 0

c u

u

u

c

0

1

x

1 0

u c

c

u

u

1

0

0

0 1

RE

MO

TE

FR

AM

E

E

N

C

H

R

T

R

R

P

LV

T

X

O

K

R

X

O

K

u u

u

u

u

0

1

x

0 0

c u

c

u

u

0

0

x

1 0

u c

c

u

c

0

0

x

0 1

DA

TA

FR

AM

E

(de

fer

red

)

u : modified by user

i

c : modified by CAN

i

message object in reception

message object in transmission by user

message object stay in transmission

message object stay in reception

message object in transmission

message object in reception

message object in reception
by CAN controller

by user