CLRC632 Datasheet, PDF (123/163 Pages) NXP Semiconductors – Multiple Protocol Contactless Reader IC

Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
CL RC632
18.4.5 STATE DIAGRAM FOR THE CARD COMMUNICATION
Command =
(Transmit OR
Receive OR
Transceive)
Idle
(000)
RCeocmemivaend ₌
TxSOF
(001)
SOF transmitted
TxData
(010)
GoToRx1
(100)
next bit clock
PrepareRx
(101)
Data transmitted
RxWaitCounter
=0
TxEOF
(011)
AwaitingRx
(110)
Signal Strength >
MinLevel
EOF transmitted AND
Command = Transceive
Receiving
(111)
EOF transmitted AND
Command = Transmit
Frame Received
End of Receive frame AND
RxMultiple = 0
GoToRx2
(100)
Set
CommandRegister = Idle
(000)
RxMultiple = 1
Figure 18-4: State Diagram: Card Communication
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