IBM uPD78082 Manuale Utente

PE

6

5

4

3

2

1

0

7

Symbol

ASIS

0

0

0

0

0

FE

OVE

FF71H              00H          R

Address     After Reset     R/W

OVE

0

1

Overrun Error Flag

Overrun error not generated 

Overrun error generated

(When next receive operation is completed before
data from receive buffer register is read)

FE

0

1

Framing Error Flag

Framing error not generated

Framing error generated

(When stop bit is not detected)

PE

0

1

Parity Error Flag

Parity error not generated 

Parity error generated (When transmit data parity
does not match)

ASIS is set with a 1-bit or 8-bit memory manipulation instruction.

RESET input sets ASIS to 00H.

Notes 1. The receive buffer register (RXB) must be read when an overrun error is generated.  Overrun

errors will continue to be generated until RXB is read.

2. Even if the stop bit length has been set as 2 bits by bit 2 (SL) of the asynchronous serial

interface mode register (ASIM), only single stop bit detection is performed during reception.