AS3991-BQFT austriamicrosystems, AS3991-BQFT Datasheet - Page 31

• Manufacturer Part Number: AS3991-BQFT
• Description: IC UHF RFID READER 64-QFN
• Manufacturer: austriamicrosystems

Specifications of AS3991-BQFT

• Rf Type: Read / Write
• Frequency: 840MHz ~ 960MHz
• Features: ISO-18000-6
• Package / Case: 64-VFQFN, Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AS3991-BQFT; AS3991-BQFTTR

AS3990/AS3991
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 27. AGC and Internal Status Register (0E)
RSSI Levels Register (0F) – Displays the signal strength on both reception channels.
Table 28. RSSI Levels Register (0F)
1. The RSSI values are valid from reception start till start of next transmission.
AGL / VCO Status Register (10) – in case r10page<1:0>=00 (reg12) displays the status of the AGL.
Table 29. AGL Status Register (10)
1. Default: 00
AGL / VCO Status Register (10) – in case r10page<1:0>=01 (reg12) displays the status of the internal VCO.
Table 30. VCO Status Register (10)
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Bit
Bit
Bit
Bit
B2
B1
B0
B7
B6
B5
B4
B3
B2
B1
B0
B7
B6
B5
B4
B3
B2
B1
B0
B7
B6
B5
B4
Signal Name
Signal Name
Signal Name
Signal Name
vco_ri<7>
vco_ri<6>
vco_ri<5>
vco_ri<4>
rssi<7>
rssi<6>
rssi<5>
rssi<4>
rssi<3>
rssi<2>
rssi<1>
rssi<0>
osc_ok
agl<5>
agl<4>
agl<3>
agl<2>
agl<1>
agl<0>
pll_ok
rf_ok
RFU
1
1
RF level stable
PLL locked
Crystal oscillator stable
RSSI value of Q channel
(REC_B)
RSSI value of I channel
(REC_A)
AGL status (7 steps, 3dB per
step) REC_A
AGL status (7 steps, 3dB per
step) REC_B
VCO automatic range select
result
Function
Function
Function
Function
Revision 3.81
RFU
(16 steps, 2dB per step)
(16 steps, 2dB per step)
reserved for future use (RFU)
AS3991: in case r10page<0>=1 (reg12):
001, next silicon automatic sel. vco_r
AS3991: in case r10page<0>=1 (reg12):
VCO measurement result is presented.
16 steps
Comments
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Comments
Comments
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