AS3909 Datasheet, PDF (49/77 Pages) ams AG – 13.56 MHz RFID Reader IC, ISO-14443 A/B

Application Information
trg_l3
trg_l2
trg_l1
trg_l0
1
1
0
0
1
1
0
1
1
1
1
0
1
1
1
1
Figure 44:
Collision Avoidance Threshold as seen on RFI1 Input
rfe_3
x
0
0
0
0
1
0
1
0
1
1
0
1
1
1
rfe_2
0
0
0
0
1
0
1
0
1
0
1
1
1
1
1
rfe_1
0
0
1
1
0
0
0
1
1
1
0
1
0
1
1
rfe_0
0
1
0
1
0
1
1
0
0
1
0
1
1
0
1
Target activation threshold
voltage [mVpp on RFI1]
190
175
155
145
Collision avoidance threshold
voltage [mVpp on RFI1]
forbidden (measurement is
deactivated)
50
67
88
120
145
172
185
240
255
340
350
480
700
1080
ams Datasheet, Confidential: 2013-Oct [3-02]
AS3909/AS3910 – 49