DSPIC33EP128GS708 datasheet(259/484 Pages) MICROCHIP

259 / 484 page

 2016-2018 Microchip Technology Inc.

DS70005258C-page 259

dsPIC33EPXXXGS70X/80X FAMILY

20.3

UART Control Registers

UxMODE: UARTx MODE REGISTER

R/W-0

U-0

R/W-0

U-0

R/W-0

UARTEN(1)

—

USIDL

IREN(2)

RTSMD

—UEN1

UEN0

bit 15

bit 8

HC/R/W-0

R/W-0

HC/R/W-0

R/W-0

WAKE

LPBACK

ABAUD

URXINV

BRGH

PDSEL1

PDSEL0

STSEL

bit 7

bit 0

Legend:

HC = Hardware 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

UARTEN: UARTx Enable bit(1)

1 = UARTx is enabled; all UARTx pins are controlled by UARTx as defined by UEN<1:0>

0 = UARTx is disabled; all UARTx pins are controlled by PORT latches; UARTx power consumption is

minimal

bit 14

Unimplemented: Read as ‘0’

bit 13

USIDL: UARTx Stop in Idle Mode bit

1 = Discontinues module operation when device enters Idle mode

0 = Continues module operation in Idle mode

bit 12

IREN: IrDA® Encoder and Decoder Enable bit(2)

1 = IrDA encoder and decoder are enabled

0 = IrDA encoder and decoder are disabled

bit 11

RTSMD: Mode Selection for UxRTS Pin bit

1 =UxRTS pin is in Simplex mode

0 =UxRTS pin is in Flow Control mode

bit 10

Unimplemented: Read as ‘0’

bit 9-8

UEN<1:0>: UARTx Pin Enable bits

11 = UxTX, UxRX and BCLKx pins are enabled and used; UxCTS pin is controlled by PORT latches

10 = UxTX, UxRX, UxCTS and UxRTS pins are enabled and used

01 = UxTX, UxRX and UxRTS pins are enabled and used; UxCTS pin is controlled by PORT latches

00 = UxTX and UxRX pins are enabled and used; UxCTS and UxRTS/BCLKx pins are controlled by

PORT latches

bit 7

WAKE: Wake-up on Start Bit Detect During Sleep Mode Enable bit

1 = UARTx continues to sample the UxRX pin, interrupt is generated on the falling edge; bit is cleared

in hardware on the following rising edge

0 = No wake-up is enabled

bit 6

LPBACK: UARTx Loopback Mode Select bit

1 = Enables Loopback mode

0 = Loopback mode is disabled

Note 1:

Refer to “Universal Asynchronous Receiver Transmitter (UART)” (DS70000582) in the

“dsPIC33/PIC24 Family Reference Manual” for information on enabling the UARTx module for receive or

transmit operation.

This feature is only available for the 16x BRG mode (BRGH = 0).

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