AS3991-BQFT austriamicrosystems, AS3991-BQFT Datasheet - Page 32

• 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 30. VCO Status Register (10)
Version Register (13) – Provides the version information.
0x30: AS3990
0x38: AS3991
Test Registers
Measurement Selection (11)
Table 31. Measurement Selection (11)
1. Default: Reset to 00 at por=H and EN=L
Test Setting (12) – (three bytes deep)
Sets special connections for test or direct chip use. Should be low for normal operation.
Table 32. Test Setting (12)
www.austriamicrosystems.com
23:21
20:18
15:14
Bit
Bit
Bit
B3
B2
B1
B0
B7
B6
B5
B4
B3
B2
B1
B0
17
16
r10page<1:0>
Signal Name
Signal Name
Signal Name
vco_ri<3>
vco_ri<2>
vco_ri<1>
vco_ri<0>
msel<2>
msel<1>
msel<0>
tm<3:1>
ta<3:1>
CodSu
DecSu
1
RFU
1
Internal VCO type
VCO pin voltage measurement 7 steps, step size 0.4V
ADC measurement selection
Analog tests
Analog tests
RFU
RX (de-coder) test speed-up
Page reg10 selection
Function
Function
Function
Revision 3.81
RFU
0: 900 MHz VCO
1: 1800 MHz VCO
reserved for future use (RFU)
000: None
011: ADC pin
001: Rec. A mixer DC
100: Internal RF level
111: VEXT level
010: Rec. B mixer DC level
For test purposes only. Should be low for
normal operation.
For test purposes only. Should be low for
normal operation.
reserved for future use (RFU)
For test purposes only. Should be low for
normal operation.
00: agl
01: VCO range presented in reg10
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