Filter
Top Products
15-July-2004
4
c) Data transmitted by master (control abort process)
MasterSlave
ENQ code (05H)
1)
NAK code (15H)
2)
3)
ENQ code (05H)
NAK code (15H)
ENQ code (05H)
NAK code (15H)
ENQ code (05H)
NAK code (15H)
1) Master sends ENQ code to slave.
2) Since ACK code cannot be sent, slave sent NAK code to master.
3) Sequence is repeated 3 times in attempts to retransmit. After receiving the 3
rd
successive NAK code, comms control is aborted.