Microchip Technology MA330012 데이터 시트
©
2007 Microchip Technology Inc.
Preliminary
DS70165E-page 273
dsPIC33F
REGISTER 21-4:
DCISTAT: DCI STATUS REGISTER
U-0
U-0
U-0
U-0
R-0
R-0
R-0
R-0
—
—
—
—
SLOT<3:0>
bit 15
bit 8
U-0
U-0
U-0
U-0
R-0
R-0
R-0
R-0
—
—
—
—
ROV
RFUL
TUNF
TMPTY
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 15-12
Reserved: Read as ‘
0
’
bit 11-8
SLOT<3:0>: DCI Slot Status bits
1111
= Slot #15 is currently active
• • •
0010
= Slot #2 is currently active
0001
= Slot #1 is currently active
0000
= Slot #0 is currently active
bit 7-4
Reserved: Read as ‘
0
’
bit 3
ROV: Receive Overflow Status bit
1
= A receive overflow has occurred for at least one receive register
0
= A receive overflow has not occurred
bit 2
RFUL: Receive Buffer Full Status bit
1
= New data is available in the receive registers
0
= The receive registers have old data
bit 1
TUNF: Transmit Buffer Underflow Status bit
1
= A transmit underflow has occurred for at least one transmit register
0
= A transmit underflow has not occurred
bit 0
TMPTY: Transmit Buffer Empty Status bit
1
= The transmit registers are empty
0
= The transmit registers are not empty