CLRC63201TSLASH0FE datasheet(107/163 Pages) PHILIPS

107 / 163 page

Philips Semiconductors

Product Specification Rev. 3.0; May 2003

Multiple Protocol Contactless Reader IC

CL RC632

107

Confidential

15 SERIAL SIGNAL SWITCH

15.1 General

Two main blocks are implemented in the CL RC632. A digital circuitry, comprising state machines, coder and

decoder logic and so on and an analog circuitry with the modulator and antenna drivers, receiver and

amplification circuitry. The interface between these two blocks can be configured in the way, that the

interfacing signals may be routed to the pins MFIN and MFOUT.

This topology supports, that the analog part of the one CL RC632 may be connected to the digital part of

another device.

The serial signal switch can be used to measure MIFARE® and ISO14443 as well I

•CODE1 and ISO15693

related signals.

Note: The MFIN pin can only be accessed by 106 kbaud according to ISO14443A . The Manchester

with Subcarrier- and the Manchester signal can only be accessed at the MFOUT pin at 106 kbaud

according to ISO14443A.

15.2 Block Diagram

Figure 15-1 describes the serial signal switches. Three different switches are implemented in the serial signal

switch in order to use the CL RC632 in different configurations.

The serial signal switch may also be used during the design In phase or for test purposes to check the

transmitted and received data. Chapter 21.2 describes analog test signals as well as measurements at the

serial signal switch.

Note: The SL RC400 uses the name SIGOUT for the MFOUT pin. The CLRC 632 functionality includes the

(Part of)

Analog Circuitry

Tx1

Tx2

Manchester

Decoder

Miller Coder

1 out of 256,

RZ or

1 out of 4

Modulator

Driver

Modulator

Source

Envelope

MfIn

MfOut

Decoder

Source

Internal

Manchester with SubCarrier

Manchester

Serial Data Out

Serial Data In

MfIn

Subcarrier

Demodulator

Carrier

Demodulator

Subcarrier

Demodulator

Serial Signal Switch

(Part of)

Serial Data Processing

Manchester Out

SignalTo

MfOut

Digital Test Signal

Figure 15-1: Serial Signal Switch

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