Datasheet

© 2007 Microchip Technology Inc. DS21801E-page 65
MCP2515
FIGURE 12-2: READ INSTRUCTION
FIGURE 12-3: READ RX BUFFER INSTRUCTION
FIGURE 12-4: BYTE WRITE INSTRUCTION
SO
SI
SCK
CS
0 23456789101112131415161718192021221
01000001
A7 6 5 4
1A0
76543210
instruction address byte
data out
high-impedance
23
32
don’t care
SO
SI
SCK
CS
0 234567891011121314151
mn
76543210
instruction
data out
high-impedance
don’t care
n m Address Points to Address
00Receive Buffer 0,
Start at RXB0SIDH
0x61
01Receive Buffer 0,
Start at RXB0D0
0x66
10Receive Buffer 1,
Start at RXB1SIDH
0x71
11Receive Buffer 1,
Start at RXB1D0
0x76
0
01001
SO
SI
SCK
CS
0 2 3 4 5 6 7 8 9101112131415161718192021221
0000000
A7 6 5 4
1A0
76543210
instruction
high-impedance
23
32
1
address byte
data byte