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EZR-LEDK1W-868 Fiches technique(PDF) 3 Page - Silicon Laboratories

No de pièce EZR-LEDK1W-868
Description  Si4010 EZRADIO짰 REMOTE CONTROL DEMO KIT USER?셎
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Fabricant  SILABS [Silicon Laboratories]
Site Internet  http://www.silabs.com
Logo SILABS - Silicon Laboratories

EZR-LEDK1W-868 Fiches technique(HTML) 3 Page - Silicon Laboratories

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Si4010-RC-DEMO
Rev. 0.2
3
3. RF Parameters
The demo kit uses the following RF parameters according to the kit’s frequency band.
The modulation is FSK.
4. Transmitter Side Program
The Si4010 in the key fob programmed with the rke_demo_2 program. Since the program is burned in the NVM
(OTP) memory of the Si4010, it cannot be changed. The whole rke_demo_2 software project can be found in the
example programs package of the Si4010. It is available at the web page
http://www.silabs.com/products/wireless/EZRadio/Pages/Si4010.aspx on the Tools tab.
The key fob transmits an RF packet three times each time a button is pressed, and it also blinks the LED on the key
fob. The packet structure is as follows:
Symbol rate is 9.6 kBd.
Each packet contains 18 additional bytes that are not received by the receiver of this demo. These additional bytes
are AES-encrypted and are used by the AES demo kit. See details in the user’s guide of the AES demo kit (P/N
4010-AESK1W-434).
In the key fob program the frequency and deviation is pin-selected by the pcb layout. This operating frequency is
indicated on a label on the back of the key fob pcb.
The 316.667 MHz key fob is available in the 4010-AESK1W-315 demo kit or separately from Silicon Labs.
The key fob’s default modulation is FSK but if the middle button is pressed and held during battery insertion, the
modulation will be OOK until the next powerdown (battery removal).
Kit Part Number
Center Frequency
Deviation
EZR-LEDK1W-434
433.92 MHz
59 kHz
EZR-LEDK1W-868
868.30 MHz
119 kHz
EZR-LEDK1W-917
917.00 MHz
120 kHz
Number of Bytes
Field Name
Description
13
Preamble
0xaa
2
Sync
0x2d, 0xd4
4
Chip ID
Unique, factory-burned chip ID
1
Status
Lower 5 bits are the button information
2
Packet count
Rolling counter for PER measurement
2
CRC-16
Generator X16+X15+X2+1, start value 0xFFFF
GPIO8
GPIO9
Center Frequency
Deviation
High
Low
316.66 MHz
43 kHz
High
High
433.92 MHz
59 kHz
Low
High
868.30 MHz
119 kHz
Low
Low
917.00 MHz
120 kHz


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