Section 4. USB Communications
11
Item Value
(Hex)
Input (Data, Variable, Absolute, Buffered Bytes) 82 02 01
Usage (Command message) 09 20
Report Count (24) 95 18
Feature (Data, Variable, Absolute, Buffered Bytes) B2 02 01
End Collection C0
CARD DATA
Card data is only sent to the host on the Interrupt In pipe using an Input Report. The device will
send only one Input Report per card swipe. If the host requests data f rom the device when no
data is available, the device will send a Nak to the host to indicate that i t has nothing to send.
When a card is swiped, the Input Report will be sent even if the data is not decodable. The
following table shows how the input report is structured.
Offset Usage Name
0Track 1 decode status
1Track 2 decode status
2Track 3 decode status
3Track 1 data length
4Track 2 data length
5Track 3 data length
6Card encode type
7–116 Track 1 data
117 – 226 Track 2 data
227 - 336 Track 3 data