User's Manual

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ARB ITRATION
NIL
VALIDATION
IDLE
MMSG_REQ SMSG_REQ
MMSG_PAYLOAD SMSG_PAYLOAD
A
A
B
B
Turn6around:
Delay
A
Turn6around:
Delay
Turn6around:
Delay
Turn6around:
Delay
Turn6around:
Delay
B
BOOT
Exchange:of:Arbitration:
Message
Exchange:of:
Validation:Message
Any
Non6Validat ion
Exchange:of:MHDR:Message Exchange:of:SHDR:Message
Exchange:of:MMSG:
Message
Any
Other:SPI:Bus:
Traffic
Any
Other:SPI:Bus:
Traffic
Exchange:of:SMSG:
Message
Host:(M aster):Has:
Message :to:Send
SRQ:Asserted:by:
Slave:(Node)
Non6A rbitration:
Response
Unexp ected:
SMSG_RSP
$
Figure&17.&Host&Interface&SPI&Bus&State&Machine&