MCP2510-E/ST Microchip Technology, MCP2510-E/ST Datasheet - Page 5

• Manufacturer Part Number: MCP2510-E/ST
• Description: Stand-Alone CAN Controller with SPI Interface
• Manufacturer: Microchip Technology

1.2
The MCP2510 has three transmit and two receive buffers, two acceptance masks (one for each receive buffer), and a
total of six acceptance filters. Figure 1-3 is a block diagram of these buffers and their connection to the protocol engine.
FIGURE 1-3:
Message
2002 Microchip Technology Inc.
Control
Queue
BUFFERS
PROTOCOL
ENGINE
TXB0
Transmit/Receive Buffers
CAN BUFFERS AND PROTOCOL ENGINE BLOCK DIAGRAM
Transmit
Transmit Byte Sequencer
Logic
TX
TXB1
{Transmit<5:0>, Receive<8:0>}
Shift<14:0>
Transmit<7:0>
TXB2
Comparator
CRC<14:0>
A
c
c
e
p
t
R
X
B
0
Receive<7:0>
Acceptance Mask
Acceptance Filter
Acceptance Filter
Data Field
Identifier
RXM0
RXF0
RXF1
Timing
Logic
Bit
RX
M
A
B
MCP2510
Acceptance Mask
Acceptance Filter
Acceptance Filter
Acceptance Filter
Acceptance Filter
Identifier
Data Field
Transmit
Protocol
Machine
Receive
Counter
Counter
Configuration
RXM1
RXF2
RXF3
RXF4
RXF5
Finite
Error
Error
State
Generator
Registers
DS21291E-page 5
Clock
BusOff
ErrPas
REC
TEC
R
X
B
1
A
c
c
e
p
t