AS3910-BQFP AMSCO [austriamicrosystems AG], AS3910-BQFP Datasheet - Page 36

• 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
Table 35. Definition
Receiver State Display Register
Table 36. Receiver State Display Register
Note: At power up and after Set Default command, content of this register is set to 0.
www.austriamicrosystems.com/HF_RFID_Reader/AS3910
Bit
7
6
5
4
3
2
1
0
rege_3
rssi_3
reg_3
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
oscok/rfp
Name
rssi_3
rssi_2
rssi_1
rssi_0
gr_2
gr_1
gr_0
Address # 17: Receiver State Display Register
MSB
LSB
Unlatched osc_ok flag in case nfc=0
Target activation detector output in case nfc=1
gr_2
rege_2
0
0
1
rssi_2
-
-
reg_2
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
other combinations
gr_1
0
0
1
-
-
gr_0
0
1
1
-
-
Function
rege_1
rssi_1
reg_1
Revision 2.3
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Gain reduction
21 dB
3 dB
0
-
-
rege_0
rssi_0
reg_0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Stores peak value of RSSI
measurement. Automatically cleared
at beginning of transponder message
and with Clear RSSI command.
Displays status of receiver gain
reduction (result of AGC, gain
reduction setting and Squelch
command)
Comments
Regulated voltage
type: R
Signal on RFI1
0.28 ~ 0.35
0.35 ~ 0.45
0.45 ~ 0.57
0.57 ~ 0.74
0.74 ~ 0.95
0.95 ~ 1.21
1.21 ~ 1.56
1.56 ~ 2.00
2.00 ~ 2.55
2.55 ~ 3.27
3.27 ~ 4.20
4.20 ~ 5.37
5.37 ~ 6.88
6.88 ~ 8.80
[mVrms]
0 ~ 0.28
>8.80
[V]
2.4
2.4
36 - 47