70353C Datasheet, PDF (21/76 Pages) Microchip Technology – Section 21. Enhanced Controller Area Network

Section 21. Enhanced Controller Area Network (ECAN™)
Register 21-19: CiFIFO: ECAN FIFO Status Register
U-0
—
bit 15
U-0
R-0
R-0
—
R-0
R-0
FBP<5:0>
R-0
R-0
bit 8
U-0
—
bit 7
U-0
R-0
R-0
R-0
R-0
—
FNRB<5:0>
R-0
R-0
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-14
bit 13-8
bit 7-6
bit 5-0
Unimplemented: Read as ‘0’
FBP<5:0>: FIFO Buffer Pointer bits
011111 = RB31 buffer
011110 = RB30 buffer
•
•
•
000001 = TRB1 buffer
000000 = TRB0 buffer
Unimplemented: Read as ‘0’
FNRB<5:0>: FIFO Next Read Buffer Pointer bits
011111 = RB31 buffer
011110 = RB30 buffer
•
•
•
000001 = TRB1 buffer
000000 = TRB0 buffer
21
© 2008-2011 Microchip Technology Inc.
DS70353C-page 21-21