ID TECH idka-2331 Betriebsanweisung

 

This is a full speed USB reader. The reader has a number of programmable 
configuration properties. These properties are stored in non-volatile EEPROM 
memory. These properties can be configured at the factory or by the end user. The 
reader has an adjustable endpoint descriptor polling interval value that can be set 
to any value in the range of 1ms to 255ms. This property can be used to change 
the speed of the card data transfer rate.  

The USB HID Reader supports the ID TECH data Structure with an EEPROM 
setting.  
 
USB HID Data Format Setting: 
Setting A:  ID TECH Data Format (Default setting) 

 

Product ID: 0500 

 

 
When the reader is initially plugged in, the Firmware reads the "Data Format 
Setting" from EEPROM and send current Product ID in enumeration.  Each time 
after changing the "Data Format Setting", the firmware saves the setting to 
EEPROM then re-do the enumeration process.  (On occasion, the reader needs to 
be disconnected and connected again to switch the data format.) 
 

 

Offset  

Usage Name                   .        

 0 

 T1 

decode 

status 

 1 

 T2 

decode 

status 

 2 

 T3 

decode 

status 

 3 

 T1 

data 

length 

 4 

 T2 

data 

length 

 5 

 T3 

data 

length 

 6 

 Card 

encode 

type 

 

7, 8 

 

Total Output Length 

 9-508 

 Output 

Data 

 

In this approach, the reader keeps all of the ID TECH data editing and other 
features like preamble, postamble, etc.  The output data is always 500 bytes; 
the "Total Output Length" field indicates the valid data length in the output 
data. 

Copyright © 2006, International Technologies & systems Corporation. All rights reserved. 
 
 

Page 6 of 11