AS3910-BQFT austriamicrosystems, AS3910-BQFT Datasheet - Page 33

• Manufacturer Part Number: AS3910-BQFT
• Description: IC RFID READER SPI 32-QFN
• Manufacturer: austriamicrosystems

Specifications of AS3910-BQFT

• Rf Type: Read / Write
• Frequency: 13.56MHz
• Features: ISO14443A, ISO1443B
• Package / Case: 32-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AS3910-BQFTTR

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
Table 29. Antenna Driver Non-Modulated Level Definition
Note: Default setting is set at power up and after Set Default command.
8.11.7 NFCIP Field Detection Threshold Register
Table 30. NFCIP Field Detection Threshold
Note: Default setting is set at power up and after Set Default command.
Table 31. Target Activation Threshold as seen on RFI1 Input
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
Address # 13: Antenna Driver Non-Modulated Level Definition
trg_l3
x
0
0
0
1
0
0
1
0
Name
droff7
droff6
droff5
droff4
droff3
droff2
droff1
droff0
Name
trg_l3
trg_l2
trg_l1
trg_l0
rfe_t3
rfe_t2
rfe_t1
rfe_t0
Address # 14: NFCIP Field Detection Threshold
Def.
Def.
0
0
0
0
0
0
0
0
Target activation level MSB
Target activation level LSB
Collision avoidance threshold MSB
Collision avoidance threshold LSB
trg_l2
0
0
0
0
0
1
1
0
1
Function
MSB
LSB
Function
Revision 2.3
trg_l1
0
0
1
1
0
0
0
1
1
Antenna drivers are composed of 8 binary weighted
segments. Setting a bit droff to 1 will disable
corresponding segment during normal non-modulated
operation.
Threshold used to detect presence of
interrogator magnetic field. See
threshold definition.
Threshold used to detect presence of external
field during collision avoidance. See
threshold definition.
trg_l0
0
1
0
1
1
0
1
0
0
Comments
type: RW
Comments
type: RW
forbidden (measurement is
threshold voltage
Target activation
[mVpp on RFI1]
deactivated)
Table 31
590
420
350
350
300
265
265
235
Table 32
for
33 - 47
for