PIC32MX440F256H-80I Datasheet, PDF (432/646 Pages) Microchip Technology – 64/100-Pin General Purpose and USB 32-Bit Flash Microcontrollers

PIC32MX3XX/4XX
REGISTER 19-2: UxSTA: UARTx STATUS REGISTER
r-x
r-x
r-x
r-x
r-x
r-x
r-x
R/W-0
—
—
—
—
—
—
—
ADM_EN
bit 31
bit 24
R/W-0
bit 23
R/W-0
R/W-0
R/W-0
R/W-0
ADDR<7:0>
R/W-0
R/W-0
R/W-0
bit 16
R/W-0
R/W-0
UTXISEL<1:0>
bit 15
R/W-0
UTXINV
R/W-0
URXEN
R/W-0
UTXBRK
R/W-0
UTXEN
R-0
UTXBF
R-1
TRMT
bit 8
R/W-0
R/W-0
URXISEL<1:0>
bit 7
R/W-0
ADDEN
R-1
RIDLE
R-0
PERR
R-0
FERR
R/C-0
OERR
R-0
RXDA
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 31-25
bit 24
bit 23-16
bit 15-14
bit 13
bit 12
bit 11
Reserved: Write ‘0’; ignore read
ADM_EN: Automatic Address Detect Mode Enable bit
1 = Automatic Address Detect mode is enabled
0 = Automatic Address Detect mode is disabled
ADDR<7:0>: Automatic Address Mask bits
When ADM_EN bit is ‘1’, this value defines the bits that are don’t care when comparing incoming
address reception
UTXISEL<1:0>: Tx Interrupt Mode Selection bits
11 = Reserved, do not use
10 = Interrupt is generated when the Transmit buffer becomes empty
01 = Interrupt is generated when all characters are transmitted
00 = Interrupt is generated when the Transmit buffer contains at least one empty space
UTXINV: Transmit Polarity Inversion bit
If IrDA mode is disabled (i.e., IREN (UxMOD<12>) is ‘0’)
1 = UxTX idle state is ‘0’
0 = UxTX idle state is ‘1’
If IrDA mode is enabled (i.e., IREN (UxMOD<12>) is ‘1’)
1 = IrDA encoded UxTX Idle state is ‘1’
0 = IrDA encoded UxTX Idle state is ‘0’
URXEN: Receiver Enable bit
1 = UARTx receiver is enabled, UxRX pin controlled by UARTx (if ON = 1)
0 = UARTx receiver is disabled, the UxRX pin is ignored by the UARTx module. UxRX pin controlled
by PORT
UTXBRK: Transmit Break bit
1 = Send BREAK on next transmission – Start bit followed by twelve ‘0’ bits, followed by Stop bit;
cleared by hardware upon completion
0 = BREAK transmission is disabled or completed
DS61143E-page 430
Preliminary
© 2008 Microchip Technology Inc.