参数资料
型号: MCP2510-E/SO
元件分类: 微控制器/微处理器
英文描述: 1 CHANNEL(S), 1M bps, LOCAL AREA NETWORK CONTROLLER, PDSO18
封装: 0.300 INCH, PLASTIC, SOIC-18
文件页数: 16/80页
文件大小: 998K
代理商: MCP2510-E/SO
2007 Microchip Technology Inc.
DS21291F-page 23
MCP2510
FIGURE 4-2:
MESSAGE RECEPTION FLOWCHART
Set RXBF0
Start
Detect
Start of
Message
?
Valid
Message
Received
?
Generate
Error
Message
Identifier meets
a filter criteria
?
Is
CANINTF.RX0IF=0
?
Go to Start
Move message into RXB0
Set RXB0CTRL.FILHIT <2:0>
Is
CANINTF.RX1IF = 0
?
Move message into RXB1
Set CANINTF.RX1IF=1
Yes, meets criteria
for RXBO
No
Generate
Interrupt on INT
Yes
No
Yes
No
Yes
Frame
The
CANINTF.RXnIF
bit
determines if the receive
register is empty and able
to accept a new message
No
Yes
No
Begin Loading Message into
Message Assembly Buffer (MAB)
according to which filter criteria
was met
Set RXB0CTRL.FILHIT <0>
according to which filter criteria
Set CANSTAT <3:0> accord-
ing to which receive buffer
the message was loaded into
Is
RXB0CTRL.BUKT=1
?
The RXB0CTRL.BUKT
bit determines if RXB0
can roll over into RXB1
if it is full
Generate Overflow Error:
Set EFLG.RX1OVR
Is
CANINTE.ERRIE=1
?
No
Go to Start
Yes
No
ARE
BFPCTRL.B0BFM=1
?
BF1CTRL.B0BFE=1
AND
Pin = 0
No
Set RXBF1
Pin = 0
No
Yes
CANINTE.RX0IE=1?
CANINTE.RX1IE=1?
RXB1
RXB0
Yes, meets criteria
for RXB1
Set EFLG.RX0OVR
Generate Overflow Error:
Set CANINTF.RX0IF=1
ARE
BFPCTRL.B1BFM=1
?
BF1CTRL.B1BFE=1
AND
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