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TIMING WAVEFORMS
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7
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C L K
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R E A D
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RxC H x BAUD)
INTERNAL
SAMPLING
-
PULSE
---------------------------------- S T A R T B I T
C _____________________________________________________3
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I N T E R N A L
8 RxC PERIODS
S A M P L I N G
.
P U L S E
RxD
| ST A R T BIT |
Rx R D Y
R E Ä D *
Tx EMPTY "
Tx RD Y
WRITE
WRITE Ui 8YTE
WRITE 2nd BYTE
T.D MAR*INr-.| S T ARTBIT|
D A T A BITS
TxRDY AND RxRDY TIMING (ASYNC MODE)
L
J
R x C
SYN D E T
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Note: (T) Write and Read pulses have no tinning limitation with respect to CLK.
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READ AND WRITE TIMING
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1 6 R x C
P E R I O D S "
JL
RECEIVER CLOCK AND DATA
D A T A BITS
IPARITY
B I T l s r O P
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[PARITY Bi
t
-1st D A T A BY T E -
- S Y N C
C H A R A C T E R
1 0 1 1 0 1 0 0 1 1 -
INTERNAL SYNC DETECT
I s t O A T A BYTE
EXTERNAL SYNC DETECT
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B I T
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WRITE 3rd BYTE
| STQPl BIT frSTART BIT T
-2nd D A T A BYTE
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