upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 696

• Manufacturer Part Number: upd70f3422gj-gae-qs-ax
• Description: 32-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

Chapter 19
696
RHPM
RGPT7 to
RGPT0
0 to 31
ROVF
After reset: xx02H
0
1
0
1
CnRGPT
Note 1
Note
Receive history list read pointer
When the CnRGPT register is read, the contents of the element indexed by the receive history
list get pointer (RGPT) of the receive history list are read. These contents indicate the number
of the message buffer in which a data frame or a remote frame has been stored.
Receive history list pointer match
The receive history list has at least one message buffer number that has not been read.
The receive history list has no message buffer numbers that have not been read.
Receive history list overflow bit
All the message buffer numbers that have not been read are preserved. All the numbers of the
message buffers in which a new data frame or remote frame has been received and stored are
recorded to the receive history list (the receive history list has a vacant element).
All the message buffer numbers that are recorded are preserved except the message buffer
number recorded last
remote frame has been received and stored is recorded to the receive history list, by
overwriting the message buffer number that was recorded last (the receive history list does not
have a vacant element).
(15)
RGPT7
15
7
0
CnRGPT - CANn module receive history list register
The CnRGPT register is used to read the receive history list.
(a) Read
1.
2.
Preliminary User’s Manual U17566EE1V2UM00
R/W
The read value of the RGPT0 to RGPT7 bits is invalid when the
RHPM bit = 1.
If no new data frame or remote frame is received and stored in a message
buffer after the ROVF bit has been set, the message buffer number last
recorded to the receive history list is preserved.
RGPT6
Address: CnRGPT <CnRBaseAddr> + 060
14
6
0
Note 2
. The number of the message buffer in which a new data frame or
RGPT5
13
5
0
RGPT4
12
4
0
RGPT3
11
3
0
H
RGPT2
10
2
0
CAN Controller (CAN)
RGPT1
RHPM
9
1
RGPT0
ROVF
8
0