MCP2510-E 查看數據表（PDF） - Microchip Technology

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MCP2510-E

Stand-Alone CAN Controller with SPI™ Interface

Microchip Technology 

MCP2510

1.2 Transmit/Receive Buffers

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:

CAN BUFFERS AND PROTOCOL ENGINE BLOCK DIAGRAM

BUFFERS

TXB0

TXB1

TXB2

Message

Queue

Control

Transmit Byte Sequencer

Acceptance Mask

A

RXM0

c

c Acceptance Filter

e

RXF0

p

t

Acceptance Filter

RXF1

Acceptance Mask

RXM1

Acceptance Filter

RXF2

Acceptance Filter

A

RXF3

c

c

Acceptance Filter e

RXF4

p

t

Acceptance Filter

RXF5

R

X

B

0

Identifier

M

A

Identifier

B

R

X

B

1

Data Field

Data Field

PROTOCOL

ENGINE

Transmit<7:0>

Receive<7:0>

Shift<14:0>

{Transmit<5:0>, Receive<8:0>}

Comparator

CRC<14:0>

Receive

Error

Counter

Transmit

Error

Counter

REC

TEC

ErrPas

BusOff

Protocol

Finite

State

Machine

Transmit

Logic

TX

Bit

Timing

Logic

RX

Clock

Generator

Configuration

Registers

© 2007 Microchip Technology Inc.

DS21291F-page 5

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