Datasheet

39.8.24 High Priority Message Status
Name: HPMS
Offset: 0x94
Reset: 0x00000000
Property: Read-only
This register is updated every time a Message ID filter element configured to generate a priority event
matches. This can be used to monitor the status of incoming high priority messages and to enable fast
access to these messages.
Bit 31 30 29 28 27 26 25 24
Access
Reset
Bit 23 22 21 20 19 18 17 16
Access
Reset
Bit 15 14 13 12 11 10 9 8
FLST FIDX[6:0]
Access
R R R R R R R R
Reset 0 0 0 0 0 0 0 0
Bit 7 6 5 4 3 2 1 0
MSI[1:0] BIDX[5:0]
Access
R R R R R R R R
Reset 0 0 0 0 0 0 0 0
Bit 15 – FLST Filter List
Indicates the filter list of the matching filter element.
Value Description
0
Standard Filter List.
1
Extended Filter List.
Bits 14:8 – FIDX[6:0] Filter Index
Index of matching filter element. Range is 0 to SIDFC.LSS - 1 (standard) or XIDFC.LSE - 1 (extended).
Bits 7:6 – MSI[1:0] Message Storage Indicator
This field defines the message storage information to a FIFO.
Value Name Description
0x0
NONE No FIFO selected.
0x1
LOST FIFO message lost.
0x2
FIFO0 Message stored in FIFO 0.
0x3
FIFO1 Message stored in FIFO 1.
Bits 5:0 – BIDX[5:0] Buffer Index
Index of Rx FIFO element to which the message was stored. Only valid when MSI[1] = 1.
SAM D5x/E5x Family Data Sheet
CAN - Control Area Network
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 1272