PIC32MX440F256H-80I Datasheet, PDF (452/646 Pages) Microchip Technology – 64/100-Pin General Purpose and USB 32-Bit Flash Microcontrollers

PIC32MX3XX/4XX
REGISTER 20-7: PMSTAT: PARALLEL PORT STATUS REGISTER (SLAVE MODE ONLY)
r-x
r-x
r-x
r-x
r-x
r-x
r-x
—
—
—
—
—
—
—
bit 31
r-x
—
bit 24
r-x
r-x
r-x
r-x
r-x
r-x
r-x
r-x
—
—
—
—
—
—
—
—
bit 23
bit 16
R-0
R/W-0
r-x
IBF
IBOV
—
bit 15
r-x
R-0
R-0
R-0
R-0
—
IB3F
IB2F
IB1F
IB0F
bit 8
R-1
R/W-0
r-x
OBE
OBUF
—
bit 7
r-x
R-1
R-1
R-1
R-1
—
OB3E
OB2E
OB1E
OB0E
bit 0
Legend:
R = Readable bit
U = Unimplemented bit
W = Writable bit
P = Programmable bit
-n = Bit Value at POR: (‘0’, ‘1’, x = Unknown)
r = Reserved bit
bit 31-16
bit 15
bit 14
bit 13-12
bit 11-8
bit 7
bit 6
bit 5-4
bit 3-0
Reserved: Write ‘0’; ignore read
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
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
Reserved: Write ‘0’; ignore read
IB3F:IB0F: 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
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
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
Reserved: Write ‘0’; ignore read
OB3E:OB0E: 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
DS61143E-page 450
Preliminary
© 2008 Microchip Technology Inc.