PIC17C4X datasheet(84/240 Pages) MICROCHIP

84 / 240 page

PIC17C4X

DS30412C-page 84

FIGURE 13-2: RCSTA REGISTER (ADDRESS: 13h, BANK 0)

R/W - 0

U - 0

R - 0

R - x

SPEN

RX9

SREN

CREN

—

FERR

OERR

RX9D

R = Readable bit

W = Writable bit

-n = Value at POR reset

(x = unknown)

bit7

bit 0

bit 7:

SPEN: Serial Port Enable bit

1 = Conﬁgures RA5/RX/DT and RA4/TX/CK pins as serial port pins

0 = Serial port disabled

bit 6:

RX9: 9-bit Receive Enable bit

1 = Selects 9-bit reception

0 = Selects 8-bit reception

bit 5:

SREN: Single Receive Enable bit

This bit enables the reception of a single byte. After receiving the byte, this bit is automatically cleared.

Synchronous mode:

1 = Enable reception

0 = Disable reception

Note: This bit is ignored in synchronous slave reception.

Asynchronous mode:

Don’t care

bit 4:

CREN: Continuous Receive Enable bit

This bit enables the continuous reception of serial data.

Asynchronous mode:

1 = Enable reception

0 = Disables reception

Synchronous mode:

1 = Enables continuous reception until CREN is cleared (CREN overrides SREN)

0 = Disables continuous reception

bit 3:

Unimplemented: Read as '0'

bit 2:

FERR: Framing Error bit

1 = Framing error (Updated by reading RCREG)

0 = No framing error

bit 1:

OERR: Overrun Error bit

1 = Overrun (Cleared by clearing CREN)

0 = No overrun error

bit 0:

RX9D: 9th bit of receive data (can be the software calculated parity bit)

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