SLRC400 datasheet(33/130 Pages) PHILIPS

33 / 130 page

Philips Semiconductors

Product Specification Rev. 2.0 November 2001

•CODE Reader IC

SL RC400

Preliminary

5.2.3

PAGE 2: TRANSMITTER AND CONTROL

5.2.3.1

Page Register

Selects the register page. See 5.2.1.1 Page register.

5.2.3.2

TxControl Register

Controls the logical behaviour of the antenna pin TX1 and TX2

Name: TxControl

Address: 0x11

Reset value: 01001000, 0x48

ModulatorSource

Force100

ASK

TX2Inv

TX2Cw

TX2RFEn

TX1RFEn

Access

Rights

r/w

Description of the bits

Bit

Symbol

Function

This value shall not be changed

6-5

Modulator

Source

Selects the source for the modulator input:

00:

LOW

01:

HIGH

10:

Internal Coder

11:

RFU

Force100ASK

Set to 1, forces a 100% ASK Modulation independent of the setting in the

ModConductance Register.

TX2Inv

Set to 1, the output signal on pin TX2 will deliver an inverted 13.56 MHz carrier

frequenzy.

TX2Cw

Set to 1, the output signal on pin TX2 will deliver continuously the un-modulated

13.56 MHz carrier frequenzy.

Setting TX2Cw to 0 enables modulation of the 13.56 MHz carrier frequenzy.

TX2RFEn

Set to 1, the output signal on pin TX2 will deliver the 13.56 MHz carrier frequency

modulated by the transmission data.

If TX2RFEn is 0, TX2 drives a constant output level. See chapter 13.

TX1RFEn

Set to 1, the output signal on pin TX1 will deliver the 13.56 MHz carrier frequency

modulated by the transmission data.

If TX1RFEn is 0, TX1 drives a constant output level. See chapter 13.

SLRC400 Datasheet(PDF) 33 Page - NXP Semiconductors

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