AS3910-BQFT austriamicrosystems, AS3910-BQFT Datasheet - Page 32

• Manufacturer Part Number: AS3910-BQFT
• Description: IC RFID READER SPI 32-QFN
• Manufacturer: austriamicrosystems

Specifications of AS3910-BQFT

• Rf Type: Read / Write
• Frequency: 13.56MHz
• Features: ISO14443A, ISO1443B
• Package / Case: 32-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AS3910-BQFTTR

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
8.11.6 AM Modulation Depth and Antenna Driver Registers
Table 26. Modulation Depth Definition Register
Note: Default setting is set at power up and after Set Default command.
Table 27. Modulation Depth Display Register
Note: At power up and after Set Default command content of this register is set to 0.
Table 28. Antenna Driver AM Modulated Level Definition
Note: Default setting is set at power up and after Set Default command.
www.austriamicrosystems.com/HF_RFID_Reader/AS3910
Bit
Bit
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
Bit
7
6
5
4
3
2
1
0
Address # 12: Antenna Driver AM Modulated Level Definition
Name
am_s
mod5
mod4
mod3
mod2
mod1
mod0
Name
dram7
dram6
dram5
dram4
dram3
dram2
dram1
dram0
Address # 11: Modulation Depth Display Register
Name
md_7
md_6
md_5
md_4
md_3
md_2
md_1
md_0
Address # 10: Modulation Depth Definition Register
Def.
Def.
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0 → AM modulated level is defined by bits mod5 to mod0.
Level is adjusted automatically by Calibrate Modulation Depth
command
1 → AM modulated level is defined by bits dram7 to dram0.
MSB
LSB
Function
MSB
LSB
Function
MSB
LSB
Function
Revision 2.3
Displays result of Calibrate Modulation Depth command.
Antenna drivers are composed of 8 binary weighted
segments. Bit md_x set to one indicates that this
particular segment will be disabled during AM modulated
state.
Antenna drivers are composed of 8 binary weighted
segments. Setting a bit dram to 1 will disable
corresponding segment during AM modulated state in
case am_s bit is set to 1.
See Application Notes for details about AM
modulation level definition.
Comments
Comments
type: R
type: RW
Comments
type: RW
32 - 47