AS3910-BQFP AMSCO [austriamicrosystems AG], AS3910-BQFP Datasheet - Page 24

• Manufacturer Part Number: AS3910-BQFP
• Description: 13.56 MHz RFID Reader IC, ISO-14443 A/B
• Manufacturer: AMSCO [austriamicrosystems AG]

AS3910
Data Sheet - A p p l i c a t i o n I n f o r m a t i o n
8.11.1 Main Registers
Table 10. ISO Mode Definition Register
Note: In case nfc=1, then both transmit and receive data rates are set to 106kbps independent of TX and RX setting. Default setting is set at
Table 11. Operation Control Register
Note: Receive low power operation sacrifices the input sensitivity for low consumption. If Rx consumption is reduced from 10mA to 5mA, then
www.austriamicrosystems.com/HF_RFID_Reader/AS3910
Bit
Bit
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
power up and after Set Default command.
a 10mA reader operation is possible. Default setting is set at power up and after Set Default command.
rx_rate2
rx_rate1
rx_rate0
tx_rate2
tx_rate1
tx_rate0
Name
Name
rx_en
tx_en
rx_lp
nfc_t
b_a
nfc
en
Address # 00: ISO Mode Definition Register
Address # 01: Operation Control Register
Def.
Def.
0
0
0
0
0
0
0
0
0
0
0
0
0
1=NFC, 0=ISO-14443
1=ISO-14443B, 0=ISO-14443A
en=1 enables oscillator and regulator (Ready
mode)
rx_en=1 enables receiver operation
rx_lp=1 low power receiver operation
tx_en=1 enables RF output
nfc_t =1 enables Initial NFC Target mode
tx_rate2
rx_rate2
0
0
0
0
1
0
0
0
0
1
rx_rate1
tx_rate1
0
0
1
1
x
0
0
1
1
x
Function
Function
Not used
Revision 2.3
rx_rate0
tx_rate0
0
1
0
1
x
0
1
0
1
x
106kb/s
212kb/s
424kb/s
848kb/s
106kb/s
212kb/s
424kb/s
848kb/s
bit rate
bit rate
RFU
RFU
NFC means NFCIP-1,
106 kbps active communication mode
Applicable in case nfc=0
Selects ISO-14443 data rate for transmit,
Applicable in case nfc=0
Selects ISO-14443 data rate for receive,
Applicable in case nfc=0
Is internally ORed with the EN pin
Receive consumption is reduced
At the moment RF field is detected, interrupt is
sent.
Comments
Comments
type: RW
type: RW
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