upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 290

• Manufacturer Part Number: upd70f3017ay
• Description: V850/sa1tm 32-/16-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

(2) Asynchronous serial interface status registers 0, 1 (ASIS0, ASIS1)
290
(n = 0, 1)
When a receive error occurs in UART mode, these registers indicate the type of error.
ASISn can be read using an 8-bit or 1-bit memory manipulation instruction.
RESET input sets these registers to 00H.
After reset: 00H
ASISn
Notes 1. Even if the stop bit length has been set to two bits by setting bit 2 (SLn) of asynchronous serial
2. Be sure to read the contents of receive buffer register n (RXBn) when an overrun error has
interface mode register n (ASIMn), stop bit detection during a receive operation only applies to a
stop bit length of 1 bit.
occurred. Until the contents of RXBn are read, further overrun errors will occur when receiving
data.
OVEn
PEn
FEn
0
1
0
1
0
1
7
0
R
No parity error
Parity error (Transmit data parity does not match)
No framing error
Framing error
No overrun error
Overrun error
buffer register)
6
0
CHAPTER 10
Note 2
Note 1
User’s Manual U12768EJ4V1UD
(Next receive operation was completed before data was read from receive
(Stop bit not detected)
Address: FFFFF302H, FFFFF312H
5
0
SERIAL INTERFACE FUNCTION
4
0
Framing Error Flag
Overrun Error Flag
Parity Error Flag
3
0
PEn
2
FEn
1
OVEn
0