Microchip Technology DM240015 Data Sheet
PIC24FJ128GC010 FAMILY
DS30009312B-page 312
2012-2013 Microchip Technology Inc.
REGISTER 21-8:
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
(
)
IB2F
(
)
IB1F
IB0F
(
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
= 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.
and 1 or Byte 2 and 3) get cleared, even on byte reading.