MLX90121 Ver la hoja de datos (PDF) - Melexis Microelectronic Systems

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Fabricante

MLX90121

13.56MHz RFID Transceiver

Melexis Microelectronic Systems  

MLX90121

13.56MHz RFID Transceiver

12. Configuration Registers

The following tables explain the meaning of the bit configurations in the 13 registers.

Register : AnalogConfig

Address : 0

Bit Default Name

7

0

XBUFSel

6

0

XBUFEnB

5

0

TModIndex

4

0

RSub-carrier

3

0

Reserved

2

0

ByPassAll

1:0

0

Reserved

Function

XBUF frequency selection (0 = 6.78MHz, 1 = 13.56MHz )

XBUF Enable (0= Enabled, 1 = Disabled)

Transmission Modulation Index (0 = 100%, 1= 10%)

Reception Sub-carrier (0 = 450K , 1 = 847K) – See notes

Do not use – Should always be configured at 0

Bypass analog chain (0= Connected, 1 = Bypassed) – See notes

Do not use - Should always be configured at 11

Notes

ByPassAll

0

1

Demodulation

FSK / PSK

ASK

RSub-carrier

0

1

Sub-carrier frequency

423 / 484 kHz

847 kHz

Notes

Register : PowerState

Address : 1

Bit Default Name

7:2

0 Reserved

1:0

0 PowerState

Function

Do not use

Chip Power State – See notes

Power State [1:0]

0

0

0

1

1

0

1

1

Mode

Idle (oscillator on)

Transmitter On

Unused

Power Down (oscillator off)

3901090121

Rev. 009

Page 19 of 26

Data Sheet

Sept.-2009

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