參數(shù)資料
型號: MC80F0208
廠商: Electronic Theatre Controls, Inc.
元件分類: 8位微控制器
英文描述: 8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 8位單晶片微控制器
文件頁數(shù): 83/128頁
文件大?。?/td> 1408K
代理商: MC80F0208
Preliminary
MC80F0208/16/24
MAR. 2005 Ver 0.2
79
Asynchronous serial interface status register0 (ASISR)
When a receive error occurs during UART mode, this register in-
dicates the type of error. ASISR can be read by an 8 bit memory
manipulation instruction. The RESET input sets ASISR0 to -----
000B. Figure 17-5 shows the format of ASISR.
.
Figure 17-5 Asynchronous Serial Interface Status Register (ASISR) Format
BTCL
7
-
6
-
5
4
3
2
1
0
FE0
UART0 Frame Error Flag
0: No Frame error
1: Framing error
Note1
(stop bit not detected)
INITIAL VALUE: ---- -000
B
ADDRESS: 0E7
H
ASISR0
OVE0
R
R
R
UART0 Parity Error Flag
0: No parity error
1: Parity error (Transmit data parity not matched)
PE0
-
-
UART0 Overrun Error Flag
0: No overrun error
1: Overrun error
Note2
(Next receive operation was completed before data was read
from
receive buffer register (RXR))
Note 1. Even if a stop bit length is set to 2 bits by setting bit2(SL) in
ASIMR, stop bit detection during a recive operation only applies
to a stop bit length of 1bit.
2. Be sure to read the contents of the receive buffer register(RXR)
when an overrun error has occurred.
Until the contents of RXR are read, futher overrun errors will
occur when receiving data.
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