CLRC63201TSLASH0FE datasheet(135/163 Pages) PHILIPS

135 / 163 page

Philips Semiconductors

Product Specification Rev. 3.0; May 2003

Multiple Protocol Contactless Reader IC

CL RC632

135

Confidential

18.9 MIFARE

® Classic Security Commands

18.9.1 LOADKEYE2 COMMAND 0BHEX

18.9.1.1 Overview

Command

Codehex

Action

Arguments and Data

Returned Data

LoadKeyE2

Reads a key from the E²PROM and puts it

into the internal key buffer

Start Address LSB

Start Address MSB

The LoadKeyE2-Command interprets the first two bytes found in the FIFO buffer as E²PROM starting

byte-address. The E²PROM bytes starting from the given starting byte-address are interpreted as key, stored

in the correct key format as described in chapter 6.4.1. When all two argument-bytes are available in the

FIFO buffer, the command execution starts. The LoadKeyE2-Command can be started only by the µ-

Processor. It stops automatically after having copied the key from the E²PROM into the key buffer.

18.9.1.2 Relevant Error Flags for the LoadKeyE2-Command

If the key format is not correct (see chapter 6.4.1) an undefined value is copied into the key buffer and the

flag KeyError is set.

18.9.2 LOADKEY COMMAND 19HEX

18.9.2.1 Overview

Command

Codehex

Action

Arguments and Data

Returned Data

LoadKey

Reads a key from the FIFO buffer and puts it

into the key buffer

Byte0 (LSB)

Byte1

…

Byte10

Byte11 (MSB)

The LoadKey-Command interprets the first twelve bytes it finds in the FIFO buffer as key, stored in the

correct key format as described in chapter 6.4.1.

When the twelve argument-bytes are available in the FIFO buffer they are checked and, if valid, are copied

into the key buffer (see also 19.2).

The LoadKey-Command can only be started by the µ-Processor. It stops automatically after having copied

the key from the FIFO buffer into the key buffer.

18.9.2.2 Relevant Error Flags for the LoadKey-Command

All bytes requested are copied from the FIFO buffer to the key buffer. If the key format is not correct (see

chapter 6.4.1) an undefined value is copied into the key buffer and the flag KeyError is set.

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