AS3956 datasheet(27/109 Pages) AMSCO

номер детали	AS3956

подробное описание детали	NFC Forum Compliant Dynamic Tag

PDF	109 Pages

Scroll/Zoom	100%

производитель	AMSCO [ams AG]

домашняя страница	http://www.ams.com

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27 / 109 page

ams Datasheet

Page 27

[v1-10] 2018-Apr-27

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AS3956 − Detailed Description

ACK Response

The ACK response of AS3956 is a 4-bit value Ah.

NACK Response

The AS3956 uses all four combinations of NAK values. The usage

of various NAK values is explained in section Error Handling.

Access to UID, SENS_RES and SEL_REQ During

Anti-Collision

UID block, SENSR1, SENSR2 and SELR bytes are stored in the 32

byte buffer. The purpose of storing these data into the buffer is

faster access to the data and UID verification during the

anti-collision procedure. Buffer access over SPI / I²C is locked

until NFC tag enters SELECTED state.

Get Version Command

In addition to standard NFC tag commands, AS3956 supports a

custom Get Version command. This command consists of 8 bits

and shall be transmitted only in standalone and Extended mode

when the tag is SELECTED state. The command code and the

tag response are shown resp. in Figure 24 and Figure 25.

Figure 24:

Coding of Get Version Command

011000

AS3956 датащи(PDF) 27 Page - ams AG