MCP25050-E/SL View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

MCP25050-E/SL

Stand-Alone CAN Controller

Microchip Technology 

TABLE 4-2: COMMAND MESSAGES (STANDARD IDENTIFIER)

Information Request Messages (to MCP2502X/5X)

Standard ID

Data Bytes

19876543210 R I

0

TD

RE

DLC

Read A/D Regs

x x x x x x x * 0 0 0 1* 0 1 0 0 0 8*

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

Read Control Regs

x x x x x x x * 0 0 1 1* 0 0 1 1 1 7*

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

Read Config Regs

x x x x x x x * 0 1 0 1* 0 0 1 0 1 5*

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

Read CAN Error

x x x x x x x * 0 1 1 1* 0 0 0 1 1 3*

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

Read PWM Config

x x x x x x x * 1 0 0 1* 0 0 1 1 0 6*

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

Read User Mem (bank1) x x x x x x x * 1 0 1 1* 0 1 0 0 0 8*

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

Read User Mem (bank 2) x x x x x x x * 1 1 0 1* 0 1 0 0 0 8*

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

Read A/D Regs

Read Control Regs

Read Config Regs

Read CAN Error

Read PWM Config

Read User Mem (bank1)

Read User Mem (bank 2)

Output Messages (from MCP2502X/5X)

Standard ID

19 87 6 54 32 10R I

0

TD

RE

DLC

x x x x x x x * 0 0 0 0 0 1 0 0 0 8 IOINTFL GPIO

AN0H

x x x x x x x * 0 0 1 0 0 0 1 1 1 7 ADCON0 ADCON1 OPTREG

x x x x x x x * 0 1 0 0 0 0 1 0 1 5 DDR

GPIO

CNF1

x x x x x x x * 0 1 1 0 0 0 0 1 1 3 EFLG

TEC

REC

x x x x x x x * 1 0 0 0 0 0 1 1 0 6 PR1

PR2

T1CON

x x x x x x x * 1 0 1 0 0 1 0 0 0 8 USERID0 USERID1 USERID2

x x x x x x x * 1 1 0 0 0 1 0 0 0 8 USERID8 USERID9 USERID1

Data Bytes

AN1H

OPTREG

CNF2

n/a

T2CON

USERID3

USERID1

AN10L

STCON

CNF3

n/a

PWM1DC

USERID4

USERID1

AN2H

IOINTEN

n/a

n/a

PWM2DC

USERID5

USERID1

AN3H

IOINTPO

n/a

n/a

n/a

USERID6

USERID1

AN32L

n/a

n/a

n/a

n/a

USERID7

USERID1

Input Messages** (to MCP2502X/5X)

Standard ID

Data Bytes

19 87 6 54 32 10R I

0

TD

RE

DLC

Write Register

x x x x x x x x 0 0 0 0 0 0 0 1 1 3 addr

mask

value

n/a

n/a

n/a

n/a

n/a

Write TX Message ID 0 x x x x x x x x 0 0 1 0 0 0 1 0 0 4 TX0SIDH TX0SIDL TX0EID8 TX0EID0

n/a

n/a

n/a

n/a

Write TX Message ID 1 x x x x x x x x 0 1 0 0 0 0 1 0 0 4 TX1SIDH TX1SIDL TX1EID8 TX1EID0

n/a

n/a

n/a

n/a

Write TX Message ID 2 x x x x x x x x 0 1 1 0 0 0 1 0 0 4 TX2SIDH TX2SIDL TX2EID8 TX2EID0

n/a

n/a

n/a

n/a

Write I/O Configuration

x x x x x x x x 1 0 0 0 0 0 1 0 1 5 IOINTEN IOINTPO DDR OPTREG ADCON1

n/a

n/a

n/a

Write RX Mask

x x x x x x x x 1 0 1 0 0 0 1 0 0 4 RXMSIDH RXMSIDL RXMEID8 RXMEID0 n/a

n/a

n/a

n/a

Write RX Filter0

x x x x x x x x 1 1 0 0 0 0 1 0 0 4 RXF0SID RXF0SID RXF0EID RXF0EID

n/a

n/a

n/a

n/a

Write RX Filter1

x x x x x x x x 1 1 1 0 0 0 1 0 0 4 RXF1SID RXF1SID RXF1EID RXF1EID

n/a

n/a

n/a

n/a

* If using non-RTR messages for information request messages (IRM), the RTR bit = 0, DLC bit field = 0, and bit 3 of the IRM ID = 1. Also, bit 3 of the output message ID = 0.

If using RTR messages for IRMs, the RTR bit = 1, DLC bit field = number of bytes in corresponding output message, and bit three of the IRM ID = x (don’t care), also, bit 3 of the

output message = x (don’t care).

** User-defined IRM IDs must be different from input message IDs to avoid message contention between the corresponding output message and the input message.

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