Microchip Technology MA330020 Data Sheet
dsPIC33FJ06GS101/X02 and dsPIC33FJ16GSX02/X04
DS70000318G-page 234
2008-2014 Microchip Technology Inc.
REGISTER 18-1:
UxMODE: UART
x
MODE REGISTER
R/W-0
U-0
R/W-0
R/W-0
R/W-0
U-0
R/W-0
R/W-0
UARTEN
—
USIDL
IREN
RTSMD
—
UEN1
UEN0
bit 15
bit 8
R/W-0, HC
R/W-0
R/W-0, HC
R/W-0
R/W-0
R/W-0
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
= 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
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 Enable bits
11
= UxTX, UxRX and BCLK 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/BCLK pins are controlled by
port latches
bit 7
WAKE: Wake-up on Start bit Detect During Sleep Mode Enable bit
1
= UARTx will continue to sample the UxRX pin; interrupt is generated on 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
bit 5
ABAUD: Auto-Baud Enable bit
1
= Enable baud rate measurement on the next character – requires reception of a Sync field (55h)
before other data; cleared in hardware upon completion
0
= Baud rate measurement is disabled or has completed
Note 1:
Refer to “UART” (DS70188) in the “dsPIC33F/PIC24H Family Reference Manual” for information on
enabling the UART module for receive or transmit operation.
enabling the UART module for receive or transmit operation.
2:
This feature is only available for the 16x BRG mode (BRGH = 0).