SLRC400 datasheet(95/130 Pages) PHILIPS

95 / 130 page

Philips Semiconductors

Product Specification Rev. 2.0 November 2001

•CODE Reader IC

SL RC400

Preliminary

SL RC400 COMMAND SET

16.1

General Description

The SL RC400 behaviour is determined by an internal state machine that is capable to perform a certain set

of commands. These commands are started by writing the according command-code to the Command-

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

16.2

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.

SLRC400 Datasheet(PDF) 95 Page - NXP Semiconductors