CLRC63201TSLASH0FE datasheet(96/163 Pages) PHILIPS

96 / 163 page

Philips Semiconductors

Product Specification Rev. 3.0; May 2003

Multiple Protocol Contactless Reader IC

CL RC632

Confidential

11.4 Initialising the Parallel Interface-Type

For the different connections for the different µ-Processor interface types (see 4.3), a certain initialising

sequence shall be applied to enable a proper µ-Processor interface type detection and to synchronise the

µ-Processor’s and the CL RC632’s Start Up.

During the whole Start Up Phase, the Command value reads as 3Fhex. At the end of the Initialising Phase the

CL RC632 enters the Idle Command automatically. Consequently the Command value changes to 00hex.

To ensure proper detection of the µ-Processor interface, the following sequence shall be executed:

• Read from the Command-Register until the 6 bit register value for Command is 00hex.

The internal initialisation phase is now completed and the CL RC632 is ready to be controlled.

• Write the value 80hex to the Page-Register to initialise the µ-Processor interface.

• Read the Command-Register. If its value is 00hex the µ-Processor interface initialisation was

successful.

Having done the interface initialisation, the linear addressing mode can be activated by writing 0x00 to the

page register(s).

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