NEO 2 Interface Developer’s Guide
Copyright © 2019, International Technologies & Systems Corporation. All rights reserved.
50
Byte 0-9
Byte 10
Byte 11
Byte 12
Byte 13
Byte 14 …
Byte 14+n-1
Byte 14+n
Byte 15+n
Header Tag
& Protocol
Version
Command
Status Code
Data Length
(MSB)
Data Length
(LSB)
Data
CRC (MSB)
CRC
(LSB)
ViVOtech2\0 50h or 51h
See
Poll for Token Data Field for Response Frame (Status Code is OK)
Data Field
Length
(bytes)
Description
Card
1
Type of Card Found (or No Card Found).
00h
None (Card Not Detected or Could not Activate)
01h
ISO 14443 Type A (Supports ISO 14443-4 Protocol)
02h
ISO 14443 Type B (Supports ISO 14443-4 Protocol)
03h
Mifare Type A (Standard)
04h
Mifare Type A (Ultralight)
05h
ISO 14443 Type A (Does not support ISO 14443-4 Protocol)
06h
ISO 14443 Type B (Does not support ISO 14443-4 Protocol)
07h
ISO 14443 Type A and Mifare (NFC phone)
Serial
Number
0 or
Variable
Serial Number (or the UID) of the PICC. Length depends on the card detected. If
no card was detected, then a serial number is not returned.
The response frame is returned asynchronously if the reader is in auto poll.
After auto-switch is invoked the reader remains in Pass-Through Mode with the RF antenna
on. The POS application must handle error recovery and exit Pass-Through Mode when done
with the
Pass-Through Mode Start/Stop
command (2C-01). The reader returns to previous
polling mode or idle state.
To enable global auto-switch, send the
Set Configuration
command (04-00) with a 01h value
for the DF7C TLV.
3.2.5.2.
User AID Auto-Switch
Use user aid auto-switch to process:
•
a recognized User AID that is selected during PPSE
•
a recognized User AID that is selected during trial & error
Auto-switch is invoked if user aid auto switch is enabled for an AID and a PICC is initiating a
transaction with this AID selected.
If successful, the reader returns a response frame containing some of the following items:
•
Error or Status condition
•
AID
•
PICC card type detected