RXB0D2 datasheet(30/92 Pages) MICROCHIP

30 / 92 page

MCP2515

DS21801G-page 30

 2003-2012 Microchip Technology Inc.

RXBnSIDL – RECEIVE BUFFER n STANDARD IDENTIFIER LOW

(ADDRESS: 62h, 72h)

R-x

U-0

R-x

SID2

SID1

SID0

SRR

IDE

—EID17

EID16

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7-5

SID<2:0>: Standard Identifier bits

These bits contain the three Least Significant bits of the Standard Identifier for the received message

bit 4

SRR: Standard Frame Remote Transmit Request bit (valid only if IDE bit = ‘0’)

= Standard Frame Remote Transmit Request Received

= Standard Data Frame Received

bit 3

IDE: Extended Identifier Flag bit

This bit indicates whether the received message was a Standard or an Extended Frame

= Received message was an Extended Frame

= Received message was a Standard Frame

bit 2

Unimplemented: Reads as ‘0’

bit 1-0

EID<17:16>: Extended Identifier bits

These bits contain the two Most Significant bits of the Extended Identifier for the received message

RXBnEID8 – RECEIVE BUFFER n EXTENDED IDENTIFIER HIGH

(ADDRESS: 63h, 73h)

R-x

EID15

EID14

EID13

EID12

EID11

EID10

EID9

EID8

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7-0

EID<15:8>: Extended Identifier bits

These bits hold bits 15 through 8 of the Extended Identifier for the received message

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