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AS3956 Datasheet(PDF) 71 Page - ams AG

Part # AS3956
Description  NFC Forum Compliant Dynamic Tag
PDF  107 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS3956 Datasheet(HTML) 71 Page - ams AG

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ams Datasheet
Page 71
[v1-11] 2018-Nov-14
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AS3956 − Detailed Description
Figure 71:
Writing Register Data with Auto-Incrementing Address over I²C
Reading Data from Addressable Registers
(Register Read Mode)
After the I²C slave address, the address of register to be read
shall be provided, MSB first. Then one or more data bytes are
transferred to SDA output, also MSB first. As in case of the write
mode, also read mode supports auto-incrementing address. In
case the register at the defined address does not exist, all 0 data
is sent to SDA. In the following figure, an example for reading
of single byte is given.
Figure 72:
Reading a Single Register over I²C
0 0 0
A
6
A
5
A
4
A
3
A
2
A
1
A
0
0
R
4
R
3
R
2
R
1
A
C
K
P
S
Data is moved to
Address
<R4-R0> + n
Slave address
D
7
D
6
D
5
D
4
D
3
D
2
R
1
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 is moved
to Address
<R4-R0> + 0
Mode Byte
SCL
SDA
A
C
K
A
6
A
5
A
4
A
3
A
2
A
1
A
0
01
R
4
R
3
R
2
R
1
A
C
K
P
S
Slave address
A
6
A
5
A
4
A
3
A
2
A
1
R
0
A
C
K
A
1
1
Mode Byte
SCL
SDA
A
C
K
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
Data
N
A
K
S
Slave address
0
0



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