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AS3955 Datasheet(PDF) 69 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) 69 Page - ams AG

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ams Datasheet
Page 69
[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 register. Difference is that, in
case of loading more bytes, all bytes go to the buffer. The
command mode code 10b indicates buffer operations.
The following figure shows how to load the transmitting data
into the buffer.
Figure 77:
Loading Data into Buffer over I²C
Reading Received Data from Buffer
Reading received data from the buffer is similar to reading data
from an addressable register. Difference is that, in case of
reading more bytes, they all come from the buffer. The
command mode code 10b indicates buffer operations. In case
of reading the received data from the buffer, all bits <C5 – C0>
are set to 1.
Figure 78:
Reading Data from Buffer over I²C
A
6
A
5
A
4
A
3
A
2
A
1
A
0
0
0 00 000
A
C
K
1
P
S
Data
Slave address
D
7
D
6
D
5
D
4
D
3
D
2
0
A
C
K
D
1
D
0
D
3
D
2
D
1
D
0
A
C
K
D
5
D
4
D
7
D
6
Data
Mode Byte
SCL
SDA
A
C
K
A
6
A
5
A
4
A
3
A
2
A
1
A
0
00 1 1 1 1 1
A
C
K
1
S
Slave address
1
A
C
K
Mode Byte
SCL
SDA
P
Slave address
A
2
A
1
A
0
1
A
C
K
A
4
A
3
A
6
A
5
S
Data
D
3
D
2
D
1
D
0
N
A
K
D
5
D
4
D
7
D
6



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