CLRC63201TSLASH0FE datasheet(114/163 Pages) PHILIPS

114 / 163 page

Philips Semiconductors

Product Specification Rev. 3.0; May 2003

Multiple Protocol Contactless Reader IC

CL RC632

114

Confidential

18.3.1 BASIC STATES

18.3.2 STARTUP COMMAND 3FHEX

Command

Codehex

Action

Arguments and Data

Returned Data

StartUp

Runs the Reset- and Initialisation Phase

Note: This command can not be activated by

software, but only by a Power-On or Hard

Reset

The StartUp-Command runs the Reset- and Initialisation Phase. It does not need or return any data. It can

not be activated by the µ-Processor but is started automatically after one of the following events:

•

Power On Reset caused by power up at Pin DVDD

•

Power On Reset caused by power up at Pin AVDD

•

Negative Edge at Pin RSTPD

The Reset-Phase defines certain register bits by an asynchronous reset. The Initialisation-Phase defines

certain registers with values taken from the E²PROM.

When the StartUp-Command has finished, the Idle-Command is entered automatically.

Notes:

•

The µ-Processor must not write to the CL RC632 as long as the CL RC632 is busy executing the

StartUp-Command. To ensure this, the µ-Processor shall poll for the Idle-Command to determine the

end of the Initialisation Phase (see also chapter 11.4).

•

As long as the StartUp-Command is active, only reading from page 0 of the CL RC632 is possible.

•

The StartUp-Command can not be interrupted by the µ-Processor.

18.3.3 IDLE COMMAND 00HEX

Command

Codehex

Action

Arguments and Data

Returned Data

Idle

No action, cancels current command execution

The Idle-Command switches the CL RC632 to its inactive state. In this Idle-state it waits for the next

command. It does not need or return any data. The device automatically enters the Idle-state when a

command finishes. In this case the CL RC632 simultaneously initiates an interrupt request by setting bit

IdleIRq. Triggered by the µ-Processor, the Idle-Command may be used to stop execution of all other

commands (except the StartUp Command). In that case no IdleIRq is generated.

Remark: Stopping a command with the Idle Command does not clear the FIFO buffer content.

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