DEMO90121LR Melexis Inc, DEMO90121LR Datasheet - Page 10

KIT DEMO LONG RANGE READER

DEMO90121LR

Manufacturer Part Number
DEMO90121LR
Description
KIT DEMO LONG RANGE READER
Manufacturer
Melexis Inc
Type
Development kitr
Datasheets

Specifications of DEMO90121LR

Contents
Reader Board, Antenna Board, 3 Transponder cards, Power Supply, RS232 Cable, Software and Documentation
For Use With/related Products
MLX90121
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
After sending address and data, the MODE line is asserted high and the chip is ready to receive the next
register configuration.
Notes
11.3. Communication Modes
11.3.1. Transmission
11.3.1.a. Analog Setup
For the transmission, the modulation depth has to be chosen. This is done by the TModIndex bit of the
AnalogConfig register, which selects the modulation index: 10% or 100%.
The modulation index can be further tuned by means of the external RMOD resistor.
3901090121
Rev. 009
1. If a register does not contain eight bits, write ‘0’ in the unused bit.
2. When MODE is asserted high, the chip is in communication mode. If the encoder is disabled (by
3. In case of successive registers writings, it is mandatory to have MODE asserted high for at least
default), DIN has to be kept at ‘1’ to avoid any modulation on the antenna.
T
mw
= 5 s in between each access, as shown in the following diagram.
MODE
MODE
RTB
DIN
CK
CK
Page 10 of 26
MSB
Address
Writing 1
LSB
MSB
Tmw
13.56MHz RFID Transceiver
Data
Writing 2
LSB
MLX90121
Data Sheet
Sept.-2009

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