mc68hc908mr24 Freescale Semiconductor, Inc, mc68hc908mr24 Datasheet - Page 312

• Manufacturer Part Number: mc68hc908mr24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Serial Communications Interface Module (SCI)
14.8.4 SCI Status Register 1
Advance Information
312
Address:
SCI status register 1 (SCS1) contains flags to signal these conditions:
SCTE — SCI Transmitter Empty Bit
Reset:
Read:
Write:
•
•
•
•
•
•
•
•
This clearable, read-only bit is set when the SCDR transfers a
character to the transmit shift register. SCTE can generate an SCI
transmitter CPU interrupt request. When the SCTIE bit in SCC2 is set,
SCTE generates an SCI transmitter CPU interrupt request. In normal
operation, clear the SCTE bit by reading SCS1 with SCTE set and
then writing to SCDR. Reset sets the SCTE bit.
Serial Communications Interface Module (SCI)
1 = SCDR data transferred to transmit shift register
0 = SCDR data not transferred to transmit shift register
Transfer of SCDR data to transmit shift register complete
Transmission complete
Transfer of receive shift register data to SCDR complete
Receiver input idle
Receiver overrun
Noisy data
Framing error
Parity error
$003B
SCTE
Bit 7
R
R
1
Figure 14-10. SCI Status Register 1 (SCS1)
= Reserved
TC
R
6
1
SCRF
R
5
0
IDLE
R
4
0
OR
R
3
0
MC68HC908MR24
NF
Freescale Semiconductor
R
2
0
FE
R
1
0
—
Rev. 4.1
Bit 0
PE
R
0