MCP2515 Development Kit User’s Guide
Message
Filter
Status
Window
Physical Layer
Configuration
Receive
Transmit
FIGURE 3-3:
MCP2515 REGISTER VIEW TEMPLATE
The following windows are available in this template:
DS51416A-page 10
Status
Message Filters
Physical Layer
Configuration
Transmit
Receive
The status window shows the contents of the CANSTAT register
(operation mode and interrupt flag codes), TX and RX error
counts and EFLG register contents.
Additionally, there are buttons to clear the overflow flag bits in
the EFLG register.
The masks and filters are configurable in this window, allowing
the user to set up and test for message acceptance. The
Message Filters window allows messages to be tested against
the masks and filters without physically going on a bus.
The three CNF registers used for all CAN bit timings are
configured in this window.
TXRTSCTRL , BFPCTRL , CANINTF , CANINTE and CANCTRL are
all modified from this window. These are the control and flag
registers.
The transmit window controls the buffer contents for the transmit
registers, including TXBnCTRL , the identifier registers and the
data registers.
This window contains all of the buffer contents for the receive
buffers, including RXBnCTRL , the identifier registers and the data
registers.
? 2003 Microchip Technology Inc.
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