Sonic Alert msm85c154hvs Clock Radio User Manual


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MSM80C154S/83C154S/85C154HVS
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Figure 4-29 Serial port (mode 0) timing chart
D1
WRITE TO SBUF
RXD
TXD
ALE
S4 S5 S6 S1 S2 S3
TERMINATE TRANSMISSION
TI
S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3
D2 D3 D4 D5 D6
S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4
WRITE TO SCON
REN·RI
TXD
ALE
S4 S5 S6 S1 S2 S3
TERMINATE TRANSMISSION
RI
S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4
READ RXD
LOAD SBUF
SHIFT-IN CLOCK
D7D0
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