AS3991-BQFT austriamicrosystems, AS3991-BQFT Datasheet - Page 23

• 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
8 Application Information
Figure 5. Application Example
Configuration Registers Address Space
At power up, the configuration registers are preset to a value that allows default operation. The preset values are given
after each register description table.
Table 8. Main Control Registers
Table 9. Protocol Sub-setting Registers
www.austriamicrosystems.com
Adr (hex)
Adr (hex)
00
01
02
03
04
05
06
07
08
09
0A
0B
14
15
16
USB
LAN
Interface
Chip status control
Protocol control
device
TX options Gen2
RX options Gen2
TRcal L register Gen2
TRcal H and misc
TX replay in slot
RX no response wait
RX wait time
RX special setting
RX special setting2
Regulator and IO control
CL_SYS, analog out, and CP
Modulator control (3 bytes deep)
PLL main (3 bytes deep)
8 I/O IRQ
UHF Reader AS3990/AS3991
microcontroller
Display
CLK CLSYS VCC
Revision 3.81
Register
Register
Optional VCO
Tx
Rx
Optional
PA
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Length
Length
1
1
1
1
1
1
1
1
1
1
1
1
3
3
3
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