Mifare & ISO14443A & ISO14443B & ISO15693 Module
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5.3
About KEY Identification
There is a byte of KEY identification in command of Mifare 1K/4K read/write. This byte will
identify the way to get the card key.
Key Identification
BIT7
BIT6
BIT5
BIT4
BIT3
BIT2
BIT1
BIT0
0
BIT0
0: KEY A; authenticate Key A of the card.
1: KEY B; authenticate Key B of the card.
BIT1
0: Using the following Key in command.
1: Using the downloaded Key by command 0x2D.
BIT6: BIT5: BIT4: BIT3: BIT2: Index of the Key already downloaded (0 to 31).
If BIT1 is 0, then these 5 bits (BIT6 to BIT2) are unused. If BIT1 is 1, then use the already
downloaded key. Users need to download key(s) by using command 0x2D first; and then the 6 bytes
key in the command are left unused, but the 6-byte is necessary in the command sequence.
E.g.: key Identification is 0x00, binary system is 0
00000
00, here:
BIT0 = 0; authenticate Key A of the card
BIT1 = 0; using the key in command
BIT6:BIT5:BIT4:BIT3:BIT2:
00000
, because not use the already downloaded key, the index
key is unused in this command.
E.g.: key Identification is 0x33; binary system is 0
01100
11, here:
BIT0 = 1; authenticate Key B of the card
BIT1 = 1; using the downloaded Key in the module
BIT6:BIT5:BIT4:BIT3:BIT2:
01100
, then use the already downloaded key
01100, and
hexadecimal is 0x0C, decimal is 12.
5.4
About the automatic detecting card
The automatic detecting card function supports ISO14443A and ISO15963. It is default OFF.
User could set the automatic detecting card on by send command 0x11. This setting will lose on next
power up.
If the card operating protocol is set to ISO15963, then automatic detecting card detect the
ISO15963 cards. And if card operating protocol is set to ISO14443A, then detect the Mifare class and
ISO14443A.
Automatic detecting card supports full function of ISO15963.
Automatic detecting card supports full function of Mifare 1K/4K and Ultra Light.
Automatic detecting card can find ISO14443A smart cards. If user needs to send APDU to the
card, then must turn automatic detecting card OFF for correct operation.
Automatic detecting card supports only one card operation. If there is more than one card in the
RF effective field then the operation may fail. Then the multi-card operation will automatically turn
OFF while the automatic detecting card function turned on.