CLRC63201TSLASH0FE datasheet(148/163 Pages) PHILIPS

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Philips Semiconductors

Product Specification Rev. 3.0; May 2003

Multiple Protocol Contactless Reader IC

CL RC632

148

Confidential

21.6 Examples of I

•CODE1 Analog- and Digital Test Signals

Fig. 17 shows the answer of an I

•CODE1 Label IC to a unselected read command using the Qclock

receiving path.

RX –Reference is given to show the Manchester modulated signal at the RX pin. This signal is demodulated

and amplified in the receiver circuitry VRXAmpQ shows the amplified side band signal having used the Q-

Clock for demodulation. The signals VCorrDQ and VCorrNQ generated in the correlation circuitry are

evaluated and digitised in the evaluation and digitizer circuitry. VEvalR and VEvalL show the evaluation

signal of the right and left half bit. Finally, the digital test-signal S_data shows the received data which is

send to the internal digital circuit and S_valid indicates that the received data stream is valid.

VrxAmpQ

VcorrDQ

VcorrNQ

VevalR

VevalL

Sdata

SValid

Receiving path Q-Clock

µsec/Dev.

500

µsec/Dev.

Figure 24. Receiving path Q-Clock

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