NEC V850E/Dx3 Preliminary User's Manual page 716

Chapter 19
Last in-message
pointer (LIPT)
When ROVF bit = 1,
message buffer number is
stored (overwritten) to
element indicated by LIPT-1.
716
Downloaded from Elcodis.com electronic components distributor
Receive history list (RHL)
23
22
:
:
:
7
6
5
4
3 Message buffer 7
2
Message buffer 2
1
Message buffer 9
0 Message buffer 6
Receive history list (RHL)
Message buffer 3
23
22 Message buffer 9
7
Message buffer 5
6 Message buffer 8
Message buffer 4
5
4 Message buffer 3
3 Message buffer 7
Message buffer 2
2
1 Message buffer 9
Last in-message
0
pointer (LIPT)
Figure 19-28 Receive history list
Preliminary User's Manual U17566EE1V2UM00
Receive history list (RHL)
When message buffer 6 is read
23
22
If message is stored in message
buffers 3, 4, and 8
Last in-message
7
pointer (LIPT)
6
5
4
3
2
1
Receive history
0
list get pointer
(RGPT)
Receive history list (RHL)
When message buffer 3
receives and stores more messages
23
22
7
6
5
4
3
2
Receive history
1
list get pointer
Last in-message
(RGPT)
0
pointer (LIPT)
LIPT is locked.
CAN Controller (CAN)
:
:
:
Message buffer 8
Message buffer 4
Message buffer 3
Message buffer 7
Message buffer 2
Receive history
Message buffer 9
list get pointer
(RGPT)
When RHL is full
Message buffer 1
Message buffer 9 ROVF bit is set.
:
:
:
Message buffer 5
Message buffer 8
Message buffer 4
Message buffer 3
Message buffer 7
Message buffer 2
Receive history
Message buffer 9
list get pointer
(RGPT)