mc68hc908gp20 Freescale Semiconductor, Inc, mc68hc908gp20 Datasheet - Page 278

• Manufacturer Part Number: mc68hc908gp20
• Description: M68hc08 Family Of 8-bit Microcontroller Units Mcus
• Manufacturer: Freescale Semiconductor, Inc

18.9.4 SCI Status Register 1
Advance Information
278
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.
•
•
•
•
•
•
•
•
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
$0016
SCTE
Bit 7
1
Figure 18-12. SCI Status Register 1 (SCS1)
= Unimplemented
TC
6
1
SCRF
5
0
IDLE
4
0
OR
3
0
MC68HC908GP20
NF
Freescale Semiconductor
2
0
FE
1
0
—
Rev 2.1
Bit 0
PE
0