MC68HC908KX2 MOTOROLA [Motorola, Inc], MC68HC908KX2 Datasheet - Page 190

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

Serial Communications Interface Module (SCI)
Technical Data
190
To verify the start bit and to detect noise, data recovery logic takes
samples at RT3, RT5, and RT7.
the start bit verification samples.
If start bit verification is not successful, the RT clock is reset and a new
search for a start bit begins.
RT CLOCK
RT CLOCK
SAMPLES
CLOCK
RESET
STATE
RxD
Serial Communications Interface Module (SCI)
RT
and RT7 Samples
RT3, RT5,
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 — Rev. 1.0
Figure 14-6. Receiver Data Sampling
000
001
010
100
101
011
110
111
Table 14-2. Start Bit Verification
QUALIFICATION
START BIT
VERIFICATION
Table 14-2
START BIT
Verification
Start Bit
Yes
Yes
Yes
Yes
No
No
No
No
START BIT
SAMPLING
DATA
summarizes the results of
Noise Flag
0
1
1
0
1
0
0
0
MOTOROLA
LSB