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AS3955 Datasheet(PDF) 61 Page - ams AG

Part # AS3955
Description  NFC Forum Compliant Dynamic Tag
PDF  111 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS3955 Datasheet(HTML) 61 Page - ams AG

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ams Datasheet
Page 61
[v1-01] 2015-Apr-29
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AS3955 − Detailed Description
Loading Transmission Data into Buffer
Loading the transmitting data into the buffer is similar to
writing data into an addressable registers. Difference is that in
case of loading more bytes all bytes go to the buffer. The
command mode code 100b indicates buffer write operation. A
bit stream of 32 bytes of data can be transferred. The following
figure shows how to load the transmission data into the buffer.
Figure 64:
Loading Data into Buffer over SPI
/SS
SCLK
MOSI
10
0
x
x
x
x
x
1 to 32
bytes
X
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
X
Start of
payload Data



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