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STRFNFCA 数据表(PDF) 41 Page - STMicroelectronics

部件名 STRFNFCA
功能描述  Near field communication transceiver
PDF  74 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STRFNFCA 数据表(HTML) 41 Page - STMicroelectronics

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STRFNFCA
Commands
Doc ID 023077 Rev 10
41/74
5.11.3
Improving RF reception for ISO/IEC 18092 tags
To improve STRFNFCA reception when communicating with ISO/IEC 18092 tags, it is
possible to enable an AutoDetect filter to synchronize ISO/IEC 18092 tags with the
STRFNFCA. This can be done using the Write Register (WRREG) command to enable the
AutoDetect filter.
By default, this filter is disabled after the execution of the PROTOCOLSELECT command, but it
can be enabled using the WRREG command (0x09).
Table 29.
WRREG command description (Timer Window)
Direction
Data
Comments
Example
Host to
STRFNFCA
0x09
Command code
>>>0x09043A005804
Set recommended TimerW
value.
0x03
or
0x04
Length of data
0x3A
Timer Window (TimerW) value
0x00
or
0x01
Flag Increment address or not after Write
command
0xXX
Set TimerW value (recommended value is
0x56 or 0x58)
0x04
TimerW value confirmation
STRFNFCA
to Host
0x00
Result code
<<<0x0000
Register written
0x00
Length of data (= RegCount)
Table 30.
WRREG command description (AutoDetect Filter)
Direction
Data
Comments
Example
Host to
STRFNFCA
0x09
Command code
>>>0x09040A0102A1
Enable the AutoDetect filter.
0x03
or
0x04
Length of data
0x0A
AutoDetect filter control value
0x00
or
0x01
Flag Increment address or not after Write
command
0x02
AutoDetect filter enable
0xA1
AutoDetect filter confirmation
STRFNFCA
to Host
0x00
Result code
<<<0x0000
Register written
0x00
Length of data (= RegCount)



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