Microchip Technology MA330025-1 Data Sheet
dsPIC33EPXXX(GP/MC/MU)806/810/814 and PIC24EPXXX(GP/GU)810/814
DS70616G-page 434
2009-2012 Microchip Technology Inc.
REGISTER 24-4:
DCISTAT: DCI STATUS REGISTER
U-0
U-0
U-0
U-0
R-0
R-0
R-0
R-0
r
r
r
r
SLOT<3:0>
bit 15
bit 8
U-0
U-0
U-0
U-0
R-0
R-0
R-0
R-0
r
r
r
r
ROV
RFUL
TUNF
TMPTY
bit 7
bit 0
Legend:
r = Reserved bit
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
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
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
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
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
1 = The Transmit registers are empty
0 = The Transmit registers are not empty