CLRC63201TSLASH0FE datasheet(112/163 Pages) PHILIPS

112 / 163 page

Philips Semiconductors

Product Specification Rev. 3.0; May 2003

Multiple Protocol Contactless Reader IC

CL RC632

112

Confidential

18 CL RC632 COMMAND SET

18.1 General Description

The CL RC632 behaviour is determined by an internal state machine capable to perform a certain set of

commands. The commands can be started by writing the according command-code to the Command-

Arguments and/or data necessary to process a command are mainly exchanged via the FIFO buffer.

18.2 General Behaviour

•

Each command, that needs a data stream (or data byte stream) as input will immediately process the

data it finds in the FIFO buffer.

•

Each command that needs a certain number of arguments will start processing only when it has received

the correct number of arguments via the FIFO buffer.

•

The FIFO buffer is not cleared automatically at command start. Therefore, it is also possible to write the

command arguments and/or the data bytes into the FIFO buffer and start the command afterwards.

•

Each command (except the StartUp-Command) may be interrupted by the µ-Processor by writing a new

command code into the Command-Register e.g.: the Idle-Command.

18.3 CL RC632 Commands Overview

Command

Code

Action

Arguments and Data

passed via FIFO

Returned Data

via FIFO

see

Chapter

StartUp

3Fhex

Runs the Reset- and Initialisation

Phase.

Note: This command can not be

activated by software, but only by a

Power-On or Hard Reset

18.3.2

Idle

00hex

No action; cancels current command

execution.

18.3.3

Transmit

1Ahex

Transmits data from the FIFO buffer to

the card.

Data Stream

18.4.1

Receive

16hex

Activates receiver circuitry.

Note: Before the receiver actually

starts, the state machine waits until the

time configured in the register RxWait

has passed.

Note: This command may be used for

test purposes only, since there is no

timing relation to the Transmit-

Command.

Data Stream

18.4.2

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