
ECP Host ACK/NAK Response .................................................................................................8-6
Switch to Command Mode Request.......................................................................................8-7
Host Transmission ..................................................................................................................8-8
Reader Command Response ..................................................................................................8-9
Sample Messages ...................................................................................................................8-9
Reader Transmissions ................................................................................................................... 8-9
Host Command Transmissions.................................................................................................... 8-10
Timing and Synchronization .................................................................................................8-11
Reader Addressed Failure Conditions ..................................................................................8-12
Illegal Sequence Number (Not in the Range 0–9, A–F) ............................................................... 8-12
Wrong Sequence Number........................................................................................................... 8-12
Bad CRC ....................................................................................................................................... 8-12
Illegal Command ......................................................................................................................... 8-13
Transmission Timeout ................................................................................................................. 8-13
Receive Timeout.......................................................................................................................... 8-13
Asynchronous Message/Command Message Collision............................................................... 8-13
Host Addressed Failure Conditions ......................................................................................8-13
Illegal or Wrong Sequence Number ............................................................................................ 8-13
Bad CRC ....................................................................................................................................... 8-13
Transmission Timeout ................................................................................................................. 8-13
Receive Timeout.......................................................................................................................... 8-13
Asynchronous Message/Command Message Collision............................................................... 8-14