mc68hc705c4acfn Freescale Semiconductor, Inc, mc68hc705c4acfn Datasheet - Page 127

• Manufacturer Part Number: mc68hc705c4acfn
• Description: M68hc05 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

10.6.4 SCI Status Register
MC68HC705C4A • MC68HSC705C4A — Rev. 3.0
MOTOROLA
RWU — Receiver Wakeup Enable Bit
SBK — Send Break Bit
The SCI status register (SCSR) shown in
signal these conditions:
This read/write bit puts the receiver in a standby state. Typically, data
transmitted to the receiver clears the RWU bit and returns the receiver
to normal operation. The WAKE bit in SCCR1 determines whether an
idle input or an address mark brings the receiver out of the standby
state. Reset clears the RWU bit.
Setting this read/write bit continuously transmits break codes in the
form of 10-bit or 11-bit groups of logic 0s. Clearing the SBK bit stops
the break codes and transmits a logic 1 as a start bit. Reset clears the
SBK bit.
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1 = Standby state
0 = Normal operation
1 = Break codes being transmitted
0 = No break codes being transmitted
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
Serial Communications Interface (SCI)
Serial Communications Interface (SCI)
Figure 10-8
contains flags to
SCI I/O Registers
Technical Data
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