PIC32MX1XX Datasheet, PDF (192/320 Pages) Microchip Technology – 32-bit Microcontrollers (up to 128 KB Flash and 32 KB SRAM) with Audio and Graphics Interfaces, USB, and Advanced Analog

PIC32MX1XX/2XX
REGISTER 19-5: PMSTAT: PARALLEL PORT STATUS REGISTER (SLAVE MODES ONLY)
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Range 31/23/15/7 30/22/14/6 29/21/13/5 28/20/12/4 27/19/11/3 26/18/10/2 25/17/9/1 24/16/8/0
U-0
U-0
U-0
31:24
—
—
—
U-0
U-0
U-0
23:16
—
—
—
15:8
R-0
R/W-0, HSC
U-0
IBF
IBOV
—
R-1
R/W-0, HSC
U-0
7:0
OBE
OBUF
—
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
U-0
R-0
R-0
R-0
R-0
—
IB3F
IB2F
IB1F
IB0F
U-0
R-1
R-1
R-1
R-1
—
OB3E
OB2E
OB1E
OB0E
Legend:
R = Readable bit
-n = Value at POR
HSC = Set by Hardware; Cleared by Software
W = Writable bit
U = Unimplemented bit, read as ‘0’
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 31-16 Unimplemented: Read as ‘0’
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 buffer occurred (must be cleared in software)
0 = No overflow occurred
bit 13-12 Unimplemented: Read as ‘0’
bit 11-8 IBxF: Input Buffer x Status Full bits
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 buffer (must be cleared in software)
0 = No underflow occurred
bit 5-4 Unimplemented: Read as ‘0’
bit 3-0 OBxE: Output Buffer x Status Empty bits
1 = Output buffer is empty (writing data to the buffer will clear this bit)
0 = Output buffer contains data that has not been transmitted
DS61168D-page 192
Preliminary
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