MC68HC908KX2 MOTOROLA [Motorola, Inc], MC68HC908KX2 Datasheet - Page 191

• Manufacturer Part Number: MC68HC908KX2
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 — Rev. 1.0
MOTOROLA
NOTE:
To determine the value of a data bit and to detect noise, recovery logic
takes samples at RT8, RT9, and RT10.
results of the data bit samples.
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)
and RT10 Samples
and RT10 Samples
RT8, RT9,
RT8, RT9,
000
001
010
100
101
011
110
111
000
001
010
100
101
011
110
111
Table 14-3. Data Bit Recovery
Table 14-4. Stop Bit Recovery
Table 14-4
Serial Communications Interface Module (SCI)
summarizes the results of the stop bit
Determination
Error Flag
Data Bit
Framing
Table 14-3
0
0
0
1
0
1
1
1
1
1
1
0
1
0
0
0
summarizes the
Functional Description
Noise Flag
Noise Flag
0
1
1
1
1
1
1
0
0
1
1
1
1
1
1
0
Technical Data
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