MC68HC908AP16CFA MOTOROLA [Motorola, Inc], MC68HC908AP16CFA Datasheet - Page 224

• Manufacturer Part Number: MC68HC908AP16CFA
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Serial Communications Interface
Data Sheet
224
To verify the start bit and to detect noise, data recovery logic takes
samples at RT3, RT5, and RT7.
the start bit verification samples.
Start bit verification is not successful if any two of the three verification
samples are logic 1s. If start bit verification is not successful, the RT
clock is reset and a new search for a start bit begins.
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.
Freescale Semiconductor, Inc.
For More Information On This Product,
RT8, RT9, and RT10
RT3, RT5, and RT7
Go to: www.freescale.com
Samples
Samples
000
001
010
011
100
101
110
111
Table 13-2. Start Bit Verification
000
001
010
011
100
101
110
111
Table 13-3. Data Bit Recovery
Table 13-2
Determination
Verification
Start Bit
Data Bit
Yes
Yes
Yes
Yes
No
No
No
No
Table 13-3
0
0
0
1
0
1
1
1
MC68HC908AP Family — Rev. 2.5
summarizes the results of
Noise Flag
Noise Flag
summarizes the
0
1
1
0
1
0
0
0
0
1
1
1
1
1
1
0
MOTOROLA