dsPIC30F Family Reference Manual
DS70069C-page 22-6 © 2004 Microchip Technology Inc.
Register 22-4: DCISTAT
Upper Byte:
U-0 U-0 U-0 U-0 R-0 R-0 R-0 R-0
— — — — SLOT<3:0>
bit 15 bit 8
Lower Byte:
U-0 U-0 U-0 U-0 R-0 R-0 R-0 R-0
— — — — ROV RFUL TUNF TMPTY
bit 7 bit 0
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
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
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