883
SSR—Serial Status Register
H’FFFB4
SCI0
Bit
Initial value
Read/Write
1
R/(W)
*
7
TDRE
0
R/(W)
*
6
RDRF
0
R/(W)
*
5
ORER
0
R/(W)
*
4
FER/ERS
0
R/(W)
*
3
PER
1
R
2
TEND
0
R
1
MPB
0
R/W
0
MPBT
Transmit end (for serial communication interface)
0
Multiprocessor bit transfer
0
1
Multiprocessor bit value in transmit data is 0
Multiprocessor bit value in transmit data is 1
Multiprocessor bit
0
1
Multiprocessor bit value in receive data is 0
Multiprocessor bit value in receive data is 1
[Clearing conditions]
Read TDRE when TDRE = 1, then write 0 in TDRE.
[Setting conditions]
• Reset or transition to standby mode
• TE is cleared to 0 in SCR.
• TDRE is 1 when last bit of 1-byte serial character is
transmitted.
Parity error
0
1
[Clearing conditions] • Reset or transition to standby mode
• Read PER when PER = 1, then write 0 in PER.
[Setting condition]
Parity error (parity of receive data does not match parity
setting of O/
E
bit in SMR)
Framing error (for serial communication interface)
0
[Clearing conditions]
• Reset or transition to standby mode
• Read FER when FER = 1, then write 0 in FER.
[Setting condition]
Framing error (stop bit is 0)
Error signal status (for smart card interface)
0
[Clearing conditions]
• Reset or transition to standby mode
• Read ERS when ERS = 1, then write 0 in ERS.
[Setting condition]
A low error signal is received.
1
1
Overrun error
0
[Clearing conditions]
• Reset or transition to standby mode
• Read ORER when ORER = 1, then write 0 in ORER.
[Setting condition]
Overrun error (reception of the next serial data ends when RDRF = 1)
1
Receive data register full
0
[Clearing conditions]
• Reset or transition to standby mode
• Read RDRF when RDRF = 1, then write 0 in RDRF.
[Setting condition]
Serial data is received normally and transferred from RSR to RDR.
1
Transmit data register empty
Note:
*
Only 0 can be written, to clear the flag.
0
[Clearing conditions] • Read TDRE when TDRE = 1, then write 0 in TDRE.
[Setting conditions]
• Reset or transition to standby mode
• TE is 0 in SCR.
• Data is transferred from TDR to TSR, enabling new data to be written in TDR
1
1
Transmit end (for smart card interface)
0
[Clearing conditions]
Read TDRE when TDRE = 1, then write 0 in TDRE.
[Setting conditions]
• Reset or transition to standby mode
• TE is cleared to 0 in SCR and FER/ERS is cleared to 0.
• TDRE is 1 and FER/ERS is 0 (normal transmission)
2.5 etu* (when GM = 0) or 1.0 etu (when GM = 1) after
1-byte serial character is transmitted.
1
Note:
*
etu: Elementary time unit (time required to transmit one bit)
Содержание H8/3060
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Страница 729: ...681 H8 3062F ZTAT or H8 3062F ZTAT R mask version Ports 1 2 5 LED 600 Ω Figure 22 5 Sample LED Circuit ...
Страница 748: ...700 H8 3064F ZTAT B mask version Ports 1 2 5 LED 600 Ω Figure 22 8 Sample LED Circuit ...
Страница 777: ...729 H8 3062F ZTAT B mask version Ports 1 2 5 LED 600 Ω Figure 22 14 Sample LED Circuit ...
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