mc68hc908mr24 Freescale Semiconductor, Inc, mc68hc908mr24 Datasheet - Page 299

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

MC68HC908MR24 — Rev. 4.1
Freescale Semiconductor
NOTE:
The RT8, RT9, and RT10 samples do not affect start bit verification. If
any or all of the RT8, RT9, and RT10 start bit samples are logic 1s
following a successful start bit verification, the noise flag (NF) is set and
the receiver assumes that the bit is a start bit.
To verify a stop bit and to detect noise, recovery logic takes samples at
RT8, RT9, and RT10.
samples.
Serial Communications Interface Module (SCI)
RT8, RT9, and RT10
RT8, RT9, and RT10
Samples
Samples
Table 14-2. Data Bit Recovery
Table 14-3. Stop Bit Recovery
000
001
010
011
100
101
110
111
000
001
010
011
100
101
110
111
Table 14-3
Serial Communications Interface Module (SCI)
Determination
summarizes the results of the stop bit
Error Flag
Framing
Data Bit
0
0
0
1
0
1
1
1
1
1
1
0
1
0
0
0
Noise Flag
Noise Flag
0
1
1
1
1
1
1
0
0
1
1
1
1
1
1
0
Advance Information
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