User Guide

Table Of Contents
Allegro/Title-21 Tag Commands
61
Allegro/Title-21 Tag Commands
The Allego/Title-21 tag commands are used to operate on Allegro/Title-21 tags and
perform operations specific to those tags. These commands can only be used when the
Tag Protocol of the reader is set to Allegro/Title-21 (0x001E) using
Set Current Tag
Protocol (93h). These commands cannot be run when in Bootloader mode, only in
Application mode.
Allegro/Title-21 Tag Commands
TM
OpCode
Operation
Type
Allegro/Title-21 Command
Transaction
Type Code
0x21 Read ID Single
Read Tag ID Single (21h)
n/a
0x24 Modify
Write Request (24h; A003h)
0xA003
Title-21 ACK Request (24h; C000h)
0xC000
General ACK Request (24h; F00Fh)
0xF00F
0x28 Read
Title-21 Read Request (28h; 8000h)
0x8000
Read Request (28h; C003h)
0xC003
Random Number Request (28h; D001h)
0xD001
TDMA Read Request (28h; E003h)
0xE003
0x2C Reset
Jump to Reset Request (2Ch; D203h)
0xD203