參數(shù)資料
型號(hào)： HT2DC20S20
英文描述： HITAG 2 stick transponder
中文描述： 此外，HITAG 2棒轉(zhuǎn)發(fā)
文件頁(yè)數(shù)： 8/16頁(yè)
文件大?。?/td> 67K
代理商： HT2DC20S20
2001 Oct 01
8
Philips Semiconductors
Product specification
HITAG 2 stick transponder
HT2DC20S20
Definition of keys and passwords
Keys are cryptographic codes, which determine data
encryption during data transfer between the read and write
device and the transponder. They are used to select a
HT2DC20S20 transponder in the crypto mode. The 16-bit
key HIGH and 32-bit key LOW form one 48-bit key which
has to be identical on both the transponder and the read
and write device.
Passwords are needed to select a HT2DC20S20
transponder in the password mode. There is one pair of
passwords (password TAG and password RWD) which
has to be identical both on the transponder and the read
and write device:
Password TAG
Password that the transponder sends to the read and
write device and which may be verified by the latter
(depending on the configuration of the read and write
device).
Password RWD
Password that the read and write device sends to the
transponder and which is checked for identity by the
latter.
It is important that the following values are in accordance
with each other, i.e. the respective data on the read and
write device and on the transponder have to be identical
pairs.
The keys and passwords are predefined by Philips by
means of defined transport passwords and a transport
key. They can be written to memory, which means that
they can be changed (see also Section “Configuration of
delivered transponders”).
Remark:
keys and passwords only can be changed if their
current values are known!
Table 5
Keys and passwords for the read and write device and the transponder
Note
1.
Optional for both password and crypto mode; depending on the configuration of the read and write device.
Configuration of delivered transponders
HT2DC20S20 transponders are delivered with the following configuration.
Table 6
Configuration of delivered transponders
Note
1.
Before delivering transponders to end users, pages 1 to 3 should be locked by setting configuration byte: set bit 6 to
logic 1 for page 3 and set bit 7 to logic 1 for pages 1 and 2.
MODE
ON THE READ AND WRITE DEVICE
ON THE TRANSPONDER
Password mode
Crypto mode
password RWD
key LOW
key HIGH
password TAG; note 1
password RWD
key LOW
key HIGH
password TAG
ITEM
NAME
VALUE
DESCRIPTION
REMARK
Unique serial number
Configuration
serial number
configuration byte
0xXXXX
0x06
read-only
password mode;
Manchester code;
pages 1 to 7 read/write
MIKR
fixed
can be changed;
Transport passwords
and transport keys
password RWD
password TAG
key LOW
key HIGH
0x4D494B52
0xAA4854
0x4D494B52
0x4F4E
MIKR
ON
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