Datasheet

PIC24FJ128GA310 FAMILY
DS39996F-page 262  2010-2011 Microchip Technology Inc.
REGISTER 20-8: PMSTAT: EPMP STATUS REGISTER (SLAVE MODE ONLY)
R-0, HSC R/W-0 HS U-0 U-0 R-0, HSC R-0, HSC R-0, HSC R-0, HSC
IBF IBOV — —IB3F
(1)
IB2F
(1)
IB1F
(1)
IB0F
(1)
bit 15 bit 8
R-1, HSC R/W-0 HS U-0 U-0 R-1, HSC R-1, HSC R-1, HSC R-1, HSC
OBE OBUF
— — OB3E OB2E OB1E OB0E
bit 7 bit 0
Legend: HS = Hardware Settable bit HSC = Hardware Settable/Clearable 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 IBF: Input Buffer Full Status bit
1 = All writable Input Buffer registers are full
0 = Some or all of the writable Input Buffer registers are empty
bit 14 IBOV: Input Buffer Overflow Status bit
1 = A write attempt to a full Input register occurred (must be cleared in software)
0 = No overflow occurred
bit 13-12 Unimplemented: Read as ‘0’
bit 11-8 IB3F:IB0F: Input Buffer x Status Full bits
(1)
1 = Input buffer contains unread data (reading the buffer will clear this bit)
0 = Input buffer does not contain unread data
bit 7 OBE: Output Buffer Empty Status bit
1 = All readable Output Buffer registers are empty
0 = Some or all of the readable Output Buffer registers are full
bit 6 OBUF: Output Buffer Underflow Status bit
1 = A read occurred from an empty output register (must be cleared in software)
0 = No underflow occurred
bit 5-4 Unimplemented: Read as ‘0’
bit 3-0 OB3E:OB0E: Output Buffer x Status Empty bit
1 = Output buffer is empty (writing data to the buffer will clear this bit)
0 = Output buffer contains untransmitted data
Note 1: Even though an individual bit represents the byte in the buffer, the bits corresponding to the word (Byte 0
and 1, or Byte 2 and 3) get cleared, even on byte reading.