下载
73S8024RN
Low Cost Smart Card Interface IC
Application Note
Page 1 © 2007 TERIDIAN Semiconductor Corporation Rev 1.2
A Maxim Integrated Products Brand
AN_8024RN_001 April 2007
Implementing the Teridian 73S8024RN in NDS Applications
1 Introduction
This application note highlights particular design considerations required to implement Conditional Access smart
card interfaces in compliance with the NDS specification LC-T056I, when using the TERIDIAN 73S8024RN
integrated circuit.
This note details in particular the design constraints related to the PCB layout and external components (choice
and placement), and the typical tests that should be performed prior to submitting an application to NDS
certification testing.
Reference document is the “IRD Interface Specifications for Use with NDS Smart Cards”, NDS document
referenced LC-T056 Rev. I.
2 Demo Board
The data and chart measurements presented herein have been measured on a TERIDIAN 73S8024RN
Demonstration Board, modified to meet NDS LC-T056I requirements. Refer to the “73S8024RN Demo Board
User’s Manual” for general information about this board. Note that the electrical schematic of this board is by
default designed to meet compliance with EMV4.0 specification. As a result, there are some minor differences
between both electrical schematics. The TERIDIAN 73S8024RN configuration does not install components L1,
C6 and C7. Other component differences are described in this note, and the NDS-compliant electrical schematic
is described in the Figure 3.1
Note that the 73S8024RN Demo Board is available. Contact your TERIDIAN Semiconductor representative for
further information concerning its availability.
3 Design Guide
3.1 Typical Electrical Schematic and Bill of Materials
The electrical schematic recommended for a typical NDS LC-T056I compliant smart card interface implementation
is given in Figure 3-1, and its corresponding Bill of Materials is in Table 3-1. The jumpers represent the different
configuration options for use with the 73S8024RN, and components references correspond to the Demo Board
references.
