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Master
Interface Idle
Yes
BUSY
Asserted?
No
R/W
Assert Write
SOP
Assert SOP
No
BUSY
Asserted?
Yes
Set packet
byte to bus
/STB
Assert Strobe
No
BUSY
Reset?
Yes
STB
/
Reset Strobe
BUSY
No
Asserted?
Yes
Yes
More
Packet Bytes
to send?
No
Reset SOP
SOP
Figure 12: Flowchart of Write Cycle
Operation and Control Instructions
Slave
Interface Idle
Busy
Assert Busy
Read Packet Byte
Busy
Reset Busy
Save Packet Byte
Busy
Assert Busy
Yes
STROBE
Asserted
No
37
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