PIC24FJ128GA Datasheet, PDF (146/232 Pages) Microchip Technology – General Purpose, 16-Bit Flash Microcontrollers

PIC24FJ128GA FAMILY
REGISTER 17-5: PMSTAT: PARALLEL PORT STATUS REGISTER
Upper Byte:
R-0 R/W-0 HS U-0
IBF
IBOV
—
bit 15
U-0
R-0
R-0
R-0
—
IB3F
IB2F
IB1F
R-0
IB0F
bit 8
Lower Byte:
R-1 R/W-0 HS U-0
OBE
OBUF
—
bit 7
U-0
R-1
R-1
R-1
—
OB3E
OB2E
OB1E
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 byte register occurred (must be cleared in software)
0 = No overflow occurred
bit 13-12 Unimplemented: Read as ‘0’
bit 11-8 IBnF: Input Buffer n Status Full bit
1 = Input buffer contains data that has not been read (reading buffer will clear this bit)
0 = Input buffer does not contain any 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 byte register (must be cleared in software)
0 = No underflow occurred
bit 5-4 Unimplemented: Read as ‘0’
bit 3-0 OBnE: Output Buffer n Status Empty bit
1 = Output buffer is empty (writing data to the buffer will clear this bit)
0 = Output buffer contains data that has not been transmitted
R-1
OB0E
bit 0
Legend:
R = Readable bit
-n = Value at Reset
HS = Hardware Set
W = Writable bit
‘1’ = Bit is set
HC = Hardware Cleared
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
DS39747C-page 144
Preliminary
© 2006 Microchip Technology Inc.