mc68hc908as60 Freescale Semiconductor, Inc, mc68hc908as60 Datasheet - Page 234

• Manufacturer Part Number: mc68hc908as60
• Description: Mc68hc908as60 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Serial Communications Interface (SCI)
Technical Data
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
Freescale Semiconductor, Inc.
CLOCK
RESET
STATE
RT3, RT5, and RT7 Samples
RxD
For More Information On This Product,
RT
Serial Communications Interface (SCI)
Go to: www.freescale.com
000
001
010
100
101
011
110
111
Figure 17-6. Receiver Data Sampling
Table 17-2. Start Bit Verification
QUALIFICATION
START BIT
VERIFICATION
Table 17-2
START BIT
Start Bit Verification
START BIT
SAMPLING
Yes
Yes
Yes
Yes
DATA
No
No
No
No
summarizes the results of
MC68HC908AS60 — Rev. 1.0
Noise Flag
0
1
1
0
1
0
0
0
LSB