AS3953 datasheet(40/71 Pages) AMSOSRAM

Part #	AS3953

Description	14443 High Speed Passive Tag Interface

PDF	71 Pages

Scroll/Zoom	100%

Manufacturer	AMSOSRAM [ams-OSRAM AG]

Direct Link	https://ams-osram.com/

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40 / 71 page

ams Datasheet

Page 39

[v1-05] 2019-Feb-15

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AS3953A − Detailed Description

Loading Transmitting Data into FIFO

Loading the transmitting data into the FIFO is similar to writing

data into an addressable registers. Difference is that in case of

loading more bytes all bytes go to the FIFO. The command mode

code 10 indicates FIFO operations. In case of loading

transmitting data into FIFO all bits <C5 – C0> are set to ‘0’. Then

a bit-stream, the data to be sent (1 to 32 bytes), can be

transferred.

Figure 47 shows how to load the Transmitting data into the

FIFO.

Figure 47:

Loading of FIFO

/SS

SCLK

MOSI

1 to 32

bytes

SCLK rising

edge Data is

transfered

from µC

SCLK falling

edge Data is

sampled

/SS rising edge

signals end of

COMMAND Mode

10 pattern

indicates FIFO

mode

Start of

payload Data

AS3953 Datasheet(PDF) 40 Page - ams-OSRAM AG