Zebra DS8108

Table of Contents vii
Chapter 5: SSI Interface
Introduction .................................................................................................................................... 5-1
Communication .............................................................................................................................. 5-1
SSI Commands ........................................................................................................................ 5-2
SSI Transactions ............................................................................................................................ 5-3
General Data Transactions ...................................................................................................... 5-3
Decoded Data Transmission .................................................................................................... 5-4
Communication Summary .............................................................................................................. 5-5
RTS/CTS Lines ........................................................................................................................ 5-5
ACK/NAK Option ...................................................................................................................... 5-5
Number of Data Bits ................................................................................................................. 5-5
Serial Response Timeout ......................................................................................................... 5-6
Retries ...................................................................................................................................... 5-6
Baud Rate, Stop Bits, Parity, Response Timeout, ACK/NAK Handshaking ............................. 5-6
Errors ....................................................................................................................................... 5-6
SSI Communication Notes ....................................................................................................... 5-6
Using Time Delay to Low Power Mode with SSI ............................................................................ 5-7
Encapsulation of RSM Commands/Responses over SSI .............................................................. 5-8
Command Structure ................................................................................................................. 5-8
Response Structure ................................................................................................................. 5-8
Example Transaction ............................................................................................................... 5-9
Setting Parameters ...................................................................................................................... 5-10
Scanning Sequence Examples .............................................................................................. 5-10
Errors While Scanning ........................................................................................................... 5-10
Simple Serial Interface Parameter Defaults ................................................................................. 5-11
SSI Host Parameters ................................................................................................................... 5-12
Select SSI Host ...................................................................................................................... 5-12
Baud Rate .............................................................................................................................. 5-12
Parity ...................................................................................................................................... 5-14
Check Parity ........................................................................................................................... 5-15
Stop Bits ................................................................................................................................. 5-15
Software Handshaking ........................................................................................................... 5-16
Host RTS Line State .............................................................................................................. 5-17
Decode Data Packet Format .................................................................................................. 5-17
Host Serial Response Timeout .............................................................................................. 5-18
Host Character Timeout ......................................................................................................... 5-19
Multipacket Option ................................................................................................................. 5-20
Interpacket Delay ................................................................................................................... 5-21
Event Reporting ........................................................................................................................... 5-22
Decode Event ......................................................................................................................... 5-22
Boot Up Event ........................................................................................................................ 5-23
Parameter Event .................................................................................................................... 5-23
Chapter 6: RS-232 Interface
Introduction .................................................................................................................................... 6-1
Setting Parameters ........................................................................................................................ 6-1
Scanning Sequence Examples ................................................................................................ 6-2
Errors While Scanning ............................................................................................................. 6-2
Connecting an RS-232 Interface .................................................................................................... 6-2