CLRC63201TSLASH0FE datasheet(98/163 Pages) PHILIPS

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Philips Semiconductors

Product Specification Rev. 3.0; May 2003

Multiple Protocol Contactless Reader IC

CL RC632

Confidential

13 TRANSMITTER PINS TX1 AND TX2

The signal delivered on TX1 and TX2 is the 13.56 MHz energy carrier modulated by an envelope signal. It

can be used to drive an antenna directly, using a few passive components for matching and filtering (see

chapter 20). For that, the output circuitry is designed with a very low impedance source resistance. The

signal of TX1 and TX2 can be controlled via the TxControl Register.

13.1 Configuration of TX1 and TX2

The configuration possibilities of TX1 are described in the table below:

TX1RFEn

FORCE100ASK

Envelope

Signal on TX1

LOW (GND)

13.56 MHz carrier frequency modulated

13.56 MHz carrier frequency

LOW

13.56 MHz energy carrier

Table 13-1: Configurations of Pin TX1

The configuration possibilities of TX2 are described in the table below:

TX2RFEn

FORCE100

ASK

TX2CW

InvTX2

Envelope

Signal on TX2

LOW

13.56 MHz carrier frequency modulated

13.56 MHz carrier frequency

13.56 MHz carrier frequency modulated,

180° phase shift relative to TX1

13.56 MHz carrier frequency,

180° phase shift relative to TX1

13.56 MHz carrier frequency

13.56 MHz carrier frequency, 180° phase shift

relative to TX1

LOW

13.56 MHz carrier frequency

HIGH

13.56 MHz carrier frequency,

180° phase shift relative to TX1

13.56 MHz carrier frequency

13.56 MHz carrier frequency,

180° phase shift relative to TX1

Table 13-2: Configurations of Pin TX2

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