
ML62Q1000 Series User's Manual
Chapter 11 Serial Communication Unit
FEUL62Q1000
11-24
11.2.7 Synchronous Serial Port n Status Register (SIOnSTAT)
SIOnSTAT is s specific function register (SFR) to indicate the state of the transmission/reception operation in the SSIO
mode.
Address:
0xF60A(SIO0STAT), 0xF62A(SIO1STAT), 0xF64A(SIO2STAT), 0xF66A(SIO3STAT),
0xF68A(SIO4STAT), 0xF6AA(SIO5STAT)
Access:
R/W
Access size:
8bit
Initial value:
0x00
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Word
−
Byte
−
SIOnSTAT
Bit
−
−
−
−
−
−
−
−
−
SnRF
UL
SnRX
F
SnTX
F
SnFU
L
SnTO
ER
SnRO
ER
SnTU
ER
R/W
R
R
R
R
R
R
R
R
R
R
R
R
R
R/W
R/W
R/W
Initial
value
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit no.
Bit symbol
name
Description
15 to 7
-
Reserved bit
6
SnRFUL
This bit is used to indicate status of the reception buffer (SDnBUF) in the SSIO reception
mode.
This bit is set to “1” if there is a reception data and reset to “0” after reading the SDnBUF
register. When receiving the next data on the condition of SnRFUL bit is “1”, it generates a
reception over run error and the SnROER bit is set to “1”.
0: Receive buffer has no data (Initial)
1: Receive buffer has data
5
SnRXF
This bit is used to indicate receiving data in the SSIO mode.
0: Data reception is stopped (Initial value)
1: Data reception is in progress
4
SnTXF
This bit is used to indicate transmitting data in the SSIO mode.
0: Data transmission is stopped (Initial value)
1: Data transmission is in progress
3
SnFUL
This bit is used to indicate state of the transmission buffer (SDnBUF) in the SSIO
transmission mode.
This bit is set to “1” by writing a data to SDnBUF and reset to “0” when starting to transfer the
data. When the SnEN bit of the SUnCON register is set to "1" on the condition of SnFUL is
“1”, the transmission starts. When the SnEN bit is set to "1" on the condition of SnFUL is “0”,
the transmission does not start until a data is written to the SDnBUF register.
When writing data to SDnBUF on the condition of SnFUL is “1”, the SDnBUF register is
overwritten.
0: Transmit buffer has no data (initial value)
1: Transmit buffer has data
2
SnTOER
This bit is used to indicate a transmission overrun error. If writing a data to SDnBUF register
when the SnFUL bit is “1”, the SnTOER bit is set to “1”. To reset the SnTOER bit, write “1” to
this bit. The SnTOER bit is fixed to “0” in the reception mode.
0: There was no transmission overrun error (Initial value)
1: There was a transmission overrun error
1
SnROER
This bit is used to indicate a reception overrun error. If receiving the next data before reading
the data in the SDnBUFL register. To reset the SnROER bit, write “1” to this bit. The SnTOER
bit is fixed to “0” in the transmission mode.
0: There was no reception overrun error (Initial value)
1: There was a reception overrun error
Содержание ML62Q1000 Series
Страница 17: ...Chapter 1 Overview...
Страница 112: ...Chapter 2 CPU and Memory Space...
Страница 154: ...Chapter 3 Reset Function...
Страница 166: ...Chapter 4 Power Management...
Страница 196: ...Chapter 5 Interrupts...
Страница 248: ...Chapter 6 Clock generation Circuit...
Страница 274: ...Chapter 7 Low Speed Time Base Counter...
Страница 291: ...Chapter 8 16 Bit Timer...
Страница 320: ...Chapter 9 Functional Timer FTM...
Страница 382: ...Chapter 10 Watchdog Timer...
Страница 402: ...Chapter 11 Serial Communication Unit...
Страница 456: ...Chapter 12 I2 C Bus Unit...
Страница 491: ...Chapter 13 I2 C Master...
Страница 512: ...Chapter 14 DMA Controller...
Страница 531: ...Chapter 15 Buzzer...
Страница 550: ...Chapter 16 Simplified RTC...
Страница 559: ...Chapter 17 GPIO...
Страница 594: ...Chapter 18 External Interrupt Function...
Страница 612: ...Chapter 19 CRC Generator...
Страница 632: ...Chapter 20 Analog Comparator...
Страница 644: ...Chapter 21 D A Converter...
Страница 655: ...Chapter 22 Voltage Level Supervisor...
Страница 676: ...Chapter 23 Successive Approximation Type A D Converter...
Страница 709: ...Chapter 24 Regulator...
Страница 714: ...Chapter 25 Flash Memory...
Страница 743: ...Chapter 26 Code Option...
Страница 750: ...Chapter 27 LCD Driver...
Страница 788: ...Chapter 28 On Chip Debug Function...
Страница 795: ...Chapter 29 Safety Function...
Страница 813: ...Appendix A...
Страница 881: ...Revision History...