Specifications of the HT1 MOA3 S30

Rev. 1.1

1997-08-19

Ht1moa3.doc/HS

Page 14 of 24

5.3 Operation Modes and Configuration

5.3.1 Modes of Operation

The HITAG 1 can be operated in two modes (Standard Protocol Mode, Advanced Protocol

Mode) that cannot be configured using the Configuration Page, but via special host commands.

Advanced Protocol Mode is not available for HITAG 1 transponders based on ASIC HT1 ICS30 01x

(only available for HITAG 1 transponders based on ASIC HT1 ICS30 02x) and uses, above all, an

additional Cyclic Redundancy Check (CRC) for read operations.

5.3.2 Configuration

The Configuration Page consists of 4 Configuration Bytes, the first two bytes are used for

configuration, the other two bytes can be used freely.

The bitmaps in Configuration Bytes 0 and 1 determine the configuration of the memory, i.e. they

define which area is secret or public, read/write, read only, write only or neither read nor write.

You can allocate and write the Configuration Page until it is locked (Bit 4 of Configuration Byte

1 is set to ‘0’).

After that these bytes are read only bytes and the configuration of the transponder memory cannot

be changed any more.

ATTENTION: Once set to read only the Configuration Page cannot be changed back to

read/write again (transponder is hardware protected)!

Configuration Bytes 2 and 3: These two bytes, too, are set to read only by the OEM Lock Bit

(Configuration Byte 1 / Bit 4 = ”0”). Considering that fact you can use these two bytes freely.

They will not affect memory configuration.

Explanations of abbreviations used:

r/w

read and write

ro

read only

wo

write only

0

neither read nor write