SEGA Interactive Co. Ltd. DKT06214 Benutzerhandbuch

6. Performance

6.1 Operational performance

No Item

Standard

6.1.1

Operational power supply
voltage

5±0.25V (ripple voltage 100mVpp or
less)

6.1.2 Consumption

current

Maximum 500mA (carrier output
status)

6.1.3

Antenna output frequency
(carrier wave)

13.56MHz ±20ppm. or less

6.1.4 Data

rate

26.48kbps
(Reader/Writer Module ⇔ RFID chip)

6.1.5

Host side communications
format
Communication speed
Synchronization
      Start bit
Data count
      Stop bit
      Parity

UART half duplex
18.75kbps
Asynchronous
1 bit
8 bit
1 bit
1 bit/even number

6.1.6

Reception circuit parameter
setting

Resister settings by command

・

Slice level setting 4 stage

・

Amp gain setting 16 stage

(For details, see the communications

IC data sheet.)

At the development evaluation stage, determine the gain setting for minimum

error in communications and set this gain as the default value. If there has been an

error in communications and communications still cannot be established even after

retrying, run software so that the value set for gain is raised or lowered

automatically.

It is recommended that the value be raised or lowered from the default value in

consideration of the operational environment (power supply voltage, ambient

temperature), disparities in communication distances, and disparities in

communication performance on the tag side.

(Example)

Default

“2A”

return to default value)

(Multiple retries take place for each gain.)