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AS3911 Datasheet(PDF) 40 Page - ams AG

Part # AS3911
Description  NFC Initiator / HF Reader IC
PDF  159 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS3911 Datasheet(HTML) 40 Page - ams AG

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ams Datasheet
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[v2-11] 2016-Jun-13
AS3911 − Application Information
Figure 25 provides information on the SPI operation modes.
Reading and writing of registers is possible in any AS3911
operation mode. FIFO operations are possible in case en (bit 7
of the Operation Control Register) is set and Xtal oscillator
frequency is stable.
Figure 25:
SPI Operation Modes
MODE
MODE Pattern (communication bits)
MODE Related Data
MODE
Trailer
M1
M0
C5
C4
C3
C2
C1
C0
Register Write
0
0
A5A4A3A2
A1A0
Data byte (or more bytes in case
of auto-incrementing)
Register Read
0
1
A5
A4
A3
A2
A1
A0
Data byte (or more bytes in case
of auto-incrementing)
FIFO Load
10
0000
00
One or more bytes of FIFO data
FIFO Read
10
1111
11
One or more bytes of FIFO data
Direct Command
Mode
1
1
C5
C4
C3
C2
C1
C0



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