MCP2515-I/SO Microchip Technology Inc., MCP2515-I/SO Datasheet - Page 26

• Manufacturer Part Number: MCP2515-I/SO
• Description: CAN CONTROLLER WITH SPI INTERFACE
• Manufacturer: Microchip Technology Inc.
• Type: Programmable Peripheral Interfacer

Specifications of MCP2515-I/SO

• Package Type: 18-Pin SOIC
• Voltage, Supply: 2.7-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

MCP2515
FIGURE 4-3:
DS21801D-page 26
according to which filter criteria
Set RXB0CTRL.FILHIT <0>
Move message into RXB0
Set CANINTF.RX0IF =
BF1CTRL.B0BFE =
BFPCTRL.B0BFM =
CANINTE.RX0IE =
CANINTF.RX0IF =
Yes
No
and
Are
Is
RECEIVE FLOW FLOWCHART
No
Determines if the receive
register is empty and able
to accept a new message
0
1
1
1
?
?
?
1
No
Yes
Yes
Generate Overflow Error:
RXB0CTRL.BUKT =
Generate
Frame
Error
Set EFLG.RX0OVR
Set RXBF0
RXB0
Pin =
0
Is
Determines if RXB0 can roll
over into RXB1, if it is full.
No
Set CANSTAT <3:0> accord-
ing to which receive buffer
the message was loaded into
Message Assembly Buffer (MAB)
Yes
No
Preliminary
CANINTE.ERRIE =
Begin Loading Message into
No
Interrupt on INT
Interrupt on INT
1
Yes
Generate
Generate
?
a filter criteria
Received?
Message?
for RXB0?
Message
Yes
Is
Start of
Detect
Meets
Valid
Start
Generate Overflow Error:
Yes
Yes
Set EFLG.RX1OVR
1
?
No
No
Go to Start
Set RXBF1
RXB1
Pin =
a filter criteria
0
Go to Start
for RXB1?
Meets
Yes
No
No
Yes
according to which filter criteria
© 2005 Microchip Technology Inc.
Set RXB0CTRL.FILHIT <2:0>
Move message into RXB1
Set CANINTF.RX1IF = 1
BF1CTRL.B1BFE =
CANINTE.RX1IE =
BFPCTRL.B1BFM =
CANINTF.RX1IF =
Yes
Yes
was met
and
Are
Is
No
No
0
1
1
1
?
?
?