MFRC63002R datasheet(24/118 Pages) NXP

24 / 118 page

MFRC630

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Product data sheet

COMPANY PUBLIC

Rev. 3.1 — 6 September 2012

227531

24 of 118

NXP Semiconductors

MFRC630

Contactless reader IC

8.4.5.2

SAM connection

The MFRC630 provides an interface to connect a SAM dedicated to the MFRC630. Both

interface options of the MFRC630, I2C or I2CL can be used for this purpose. The interface

option of the SAM itself is configured by a host command sent from the host to the SAM.

The I2CL interface is intended to be used as connection between two IC’s over a short

distance. The protocol fulfills the I2C specification, but does support a single device

connected to the bus only.

8.4.6 Boundary scan interface

The MFRC630 provides a boundary scan interface according to the IEEE 1149.1. This

interface allows to test interconnections without using physical test probes. This is done

by test cells, assigned to each pin, which override the functionality of this pin.

To be able to program the test cells, the following commands are supported:

The Standard IEEE 1149.1 describes the four basic blocks necessary to use this interface:

Test Access Port (TAP), TAP controller, TAP instruction register, TAP data register;

Fig 18. I2C interface enables convenient MIFARE SAM integration

μC

Reader

T=1

I2C

aaa-002963

SAM

AV2.6

READER

Table 17.

Boundary scan command

Value

(decimal)

Command

Parameter in

Parameter out

bypass

preload

data (24)

sample

data (24)

ID code (default)

data (32)

USER code

data (32)

4Clamp

5HIGH Z

extest

data (24)

interface on/off

interface (1)

address (7)

data (8)

address (7) - data (8)

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