CLRC632 Datasheet, PDF (144/163 Pages) NXP Semiconductors – Multiple Protocol Contactless Reader IC

Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
CL RC632
21.2.2 RX-CONTROL
The following plot shows as an example an ISO14443 A related communication.
The following plot shows the beginning of a cards answer to a request signal. The signal RF shows the RF
voltage measured directly on the antenna so that the cards load modulation is visible. MFOUTSelect set to 4
shows the Manchester decoded signal with subcarrier. MFOUTSelect set to 5 shows the Manchester
decoded signal.
RF
1V/Div.
MFOUTSelect
=4
Manchester
with
Subcarrier
2V/Div.
MFOUTSelect
=5
Manchester
2V/Div.
Figure 22 RX Control Signals
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