CLRC632 Datasheet, PDF (4/163 Pages) NXP Semiconductors – Multiple Protocol Contactless Reader IC

Philips Semiconductors
Multiple Protocol Contactless Reader IC
Product Specification Rev. 3.0; May 2003
CL RC632
10.3 Stand By Mode....................................................................................................................................94
10.4 Receiver Power Down.........................................................................................................................94
11 START UP PHASE .............................................................................................................................95
11.1 Hard Power Down Phase ....................................................................................................................95
11.2 Reset Phase........................................................................................................................................95
11.3 Initialising Phase .................................................................................................................................95
11.4 Initialising the Parallel Interface-Type .................................................................................................96
12 OSCILLATOR CIRCUITRY ................................................................................................................97
13 TRANSMITTER PINS TX1 AND TX2 .................................................................................................98
13.1 Configuration of TX1 and TX2.............................................................................................................98
13.2 Operating Distance versus Power Consumption ................................................................................99
13.3
13.3.1
13.3.2
13.3.3
Antenna Driver Output Source Resistance .........................................................................................99
Source Resistance Table ..................................................................................................................100
Formula for the Source Resistance...................................................................................................101
Calculating the Effective Source Resistance ....................................................................................101
13.4 Pulse Width .......................................................................................................................................102
14 RECEIVER CIRCUITRY ...................................................................................................................103
14.1 General..............................................................................................................................................103
14.2 Block Diagram ...................................................................................................................................103
14.3
14.3.1
14.3.2
14.3.3
14.3.4
Putting the Receiver into Operation ..................................................................................................104
Automatic Clock-Q Calibration ..........................................................................................................104
Amplifier.............................................................................................................................................105
Correlation Circuitry...........................................................................................................................106
Evaluation and Digitizer Circuitry ......................................................................................................106
15 SERIAL SIGNAL SWITCH ...............................................................................................................107
15.1 General..............................................................................................................................................107
15.2 Block Diagram ...................................................................................................................................107
15.3 Registers Relevant for the Serial Signal Switch................................................................................108
15.3.1 Active Antenna Concept....................................................................................................................109
15.3.2 Driving Two RF-Parts ........................................................................................................................109
16
MIFARE^® HIGHER BAUDRATES ....................................................................................................110
17 ISO14443 B.......................................................................................................................................111
18 CL RC632 COMMAND SET .............................................................................................................112
18.1 General Description...........................................................................................................................112
18.2 General Behaviour ............................................................................................................................112
18.3 CL RC632 Commands Overview ......................................................................................................112
18.3.1 Basic States ......................................................................................................................................114
18.3.2 StartUp Command 3F_hex....................................................................................................................114
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