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参数资料
| 型号： | RWD-MIFARE |
| 厂商： | RF Solutions |
| 文件页数： | 29/35页 |
| 文件大小： | 0K |
| 描述： | MOD RCVR RFID MIFARE 13.56MHZ |
| 标准包装： | 1 |
| 系列： | MIFARE® |
| RF 型： | 读/写 |
| 频率： | 13.56MHz |
| 封装/外壳： | 24-DIP 模块 |
| 供应商设备封装： | 模块 |
| 包装： | 散装 |
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Access Condition for Sector Trailer Block
The read/write access to the Keys and the Access Bits themselves is controlled by the access
conditions for the Sector Trailer Block. The read/write access is specified as “Never”,
“KeyA”, KeyB” or Key A|B (KeyA OR KeyB).
Access Bits
Access condition for:
KEY A ACCESS BITS
KEY B
C1
0
C2
0
C3
0
Read Write Read Write
never keyA keyA never
Read Write
keyA keyA (KeyB can be read)
0
0
1
never keyA keyA keyA
keyA keyA
(Transport setting)
0
0
1
1
1
1
1
1
0
0
1
1
0
1
0
1
0
1
never never keyA never
never keyB keyA|B keyB
never keyB keyA|B never
never never keyA|B keyB
never never keyA|B never
never never keyA|B never
keyA never (KeyB can be read)
never keyB
never keyB
never never
never never
never never
The new Mifare cards have the access conditions predefined as transport configuration:
C1 C2 C3 = (0 0 1) which means Sector Trailer Block can only be read or written to using
KeyA and KeyA itself can never be read.
Because the Access Bits themselves can be locked great care must be taken when any of these
settings are changed because they may be irreversible making the card unusable.
Access Condition for data areas
The read/write access to the data areas is also controlled by the access conditions defined in
the Sector Trailer Block. The read/write access is specified as “Never”, “KeyA”, KeyB” or
Key A|B (KeyA OR KeyB).
A data block can be a “read/write block” or a “value block”. For a “read/write” block the
basic read and write operations are allowed. For the “value block” the additional increment,
decrement, transfer and restore operations can apply. In one case (001) only read and
decrement are possible for a “non-rechargeable” card application and in another case (110)
recharging is only possible using keyB.
The default transport configuration specifies that the data areas can only be accessed using
KeyA|B, however the operation of the Mifare cards define that “IF KEYB CAN BE READ
IN THE CORRESPONDING SECTOR TRAILER THEN IT CANNOT SERVE FOR
AUTHENTICATION”. This means that for the transport configuration (and 001 and 010
cases), KeyA must be used for access.
Note also that the read-only status of the Manufacturer Block is not affected by the access bits
setting.
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相关PDF资料 |
PDF描述 |
|---|---|
| RWD-QT | MODULE RCVR RFID QUAD TAG |
| RXD-433-KH2 | RECEIVER/DECODER 433MHZ KH2 SER |
| RXM-418-LC-S | RECEIVER RF 418MHZ SMT |
| RXM-418-LR_ | RECEIVER 418MHZ LR SERIES |
| RXM-869-ES_ | RECEIVER RF 869MHZ 16PIN SMD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| RWD-MIFARE-OEM | 功能描述:MOD RCVR RFID MIFARE W/ANTENNA RoHS:是 类别:RF/IF 和 RFID >> RFID IC 系列:MIFARE® 其它有关文件:CR14 View All Specifications 标准包装:1 系列:- RF 型:收发器 频率:13.56MHz 特点:ISO14443-B 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SO 包装:Digi-Reel® 其它名称:497-5719-6 |
| RWD-QT | 功能描述:MODULE RCVR RFID QUAD TAG RoHS:是 类别:RF/IF 和 RFID >> RFID 读取模块 系列:- 产品目录绘图:DLP-RFID-UHF1B 标准包装:1 系列:- RF 型:读/写 频率:900MHz 特点:ISO 18000-6 a/b/c 封装/外壳:模块 供应商设备封装:模块 包装:散装 产品目录页面:635 (CN2011-ZH PDF) 其它名称:813-1029 |
| RWDU500-WCCV4 | 制造商:Pass & Seymour/Legrand 功能描述:WALL OCC/VAC SENSOR/DIMMER 3W 500W |
| RWE182M550DEN2S | 制造商:United Chemi-Con 功能描述:CGD550X218E N12F2D |
| RWE222M450C1N2S | 制造商:United Chemi-Con 功能描述:CGC450X222L N12F1A |
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