MC68HC11G5 Datasheet, PDF (97/195 Pages) Motorola, Inc – High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcontroller

Freescale Semiconductor, Inc.
Data
Receive
Data In
Expected Stop
Data
Samples
Artifical Edge
Start Bit
Data
(a) Case 1, Receive Line Low During Artificial Edge
Data
Receive
Data In
Expected Stop
Data
Samples
Start Edge
Start Bit
Data
(b) Case 2, Receive Line High During Expected Start Edge
Figure 7-6. SCI Artificial Start Following a Framing Error
Expected Stop
Break
Receive
Data In
Detected as Valid
Start Edge
Start Bit
Data Samples
Start Start Edge
Qualifiers Verification
Samples
Figure 7-7. SCI Start Bit Following a Break
SERIAL COMMUNICATIONS INTERFACE
7-7
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