Nuvoton NuMicro MS51 32K Series, Technical Reference Manual, Page: 195 / 491

MS51
Nov. 28, 2019 Page 195 of 491 Rev 1.00
MS51
32K
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CHNICAL RE
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CE MA
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UAL
ScnIS
– SC Interrupt Status Register
Register SFR Address Reset Value
SC0IS DEH, Page 2 0000_0010 b
SC1IS E6H, Page 2 0000_0010 b
SC2IS EEH, Page 2 0000_0010 b
7 6 5 4 3 2 1 0
- - - ACERRIF BGTIF TERRIF TBEIF RDAIF
- - - R/W R/W R R R
Bit Name Description
7:5 - Reserved
4 ACERRIF Auto Convention Error Interrupt Status Flag (Read Only)
This field indicates auto convention sequence error. If the received TS at ATR state is neither 0x3B
nor 0x3F, this bit will be set.
Note: This
bit is read only, but it can be cleared by writing “0” to it.
3 BGTIF Block Guard Time Interrupt Status Flag (Read Only)
This field is used for block guard time interrupt status flag.
Note 1: This bit is valid when RXBGTEN (SCnCR0[5]) is enabled.
Note 2: This
bit is read only, but it can be cleared by writing “0” to it.
2 TERRIF Transfer Error Interrupt Status Flag (Read Only)
This field is used for transfer error interrupt status flag. The transfer error states is at SC0TSR
register which includes receiver break error BEF(SC0TSR[6]), frame error FEF(SC0TSR[5]), parity
error PEF(SC0TSR[4]) and receiver buffer overflow error RXOV(SC0TSR[0]) and transmit buffer
overflow error TXOV(SC0TSR[2]).
Note: This field is the status flag of BEF(SC0TSR[6]), FEF(SC0TSR[5]), PEF(SC0TSR[4]),
RXOV(SC0TSR[0]) and TXOV(SC0TSR[2]). So, if software wants to clear this bit, software
must write “0” to each field.
1 TBEIF Transmit Buffer Empty Interrupt Status Flag (Read Only)
This field is used for transmit buffer empty interrupt status flag.
Note: This field is the status flag of transmit buffer empty state. If software wants to clear this bit,
software must write data to DAT(SCnDR[7:0]) buffer and then this bit will be cleared
automatically.
0 RDAIF Receive Data Reach Interrupt Status Flag (Read Only)
This field is used for received data interrupt status flag.
Note: This field is the status flag of received data. If software reads data from SC_DAT pin, this bit
will be cleared automatically.