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参数资料
| 型号： | 4021-DKDB3 |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 22/34页 |
| 文件大小： | 783K |
| 描述： | KIT DEV TEST EZRADIO SI4021 TX |
| 标准包装： | 1 |
| 附件类型： | 测试卡，发射器，868MHz |
| 适用于相关产品： | EZRadio? |
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Si4021
22
EEPROM MODE
In this mode, the transmitters can operate with a standard at least 1 kbyte serial EEPROM with an SPI interface, and no microcontroller is
necessary. The following events cause wake-up of the device:
Event Number N
EEPROM entry point
Description
0
0000h
power-on
1
0080h
low level on input PB1
2
0100h
low level on input PB2
3
0180h
low level on input PB3
4
0200h
low level on input PB4
5
0280h
low supply voltage level
6
0300h
wake-up timer timeout
After any of these events, the crystal oscillator turns on and the device starts to read bytes from the EEPROM continuously (block read)
starting from address N * 128 (decimal) and executes them as commands as described in the previous section.
Note: Zero bytes can be put in the EEPROM for timing purposes. Never put more than 31 consecutive zero bytes into the EEPROMs
active region (between the actual entry point and the closing Sleep Command).
Example EEPROM Hexa Content
Power-On Reset:
00000000
C0 C4 CA 1E C8 23 C4 00 00 00 00 00 00 00 00 00
00000010
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000020
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000030
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000040
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000050
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000060
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000070
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Short Explanation:
Data in Address, Command, and Parameter fields are hexadecimal values.
For the detailed description of the control command bits, see previous section.
Address
Command
Parameter
Related Control Command
Remarks
0001
C0
C4
Power Management
Crystal Synthesizer Power Amplifier auto
on/off mode enable
0203
CA
1E
Push Button
Continuous execution for all push buttons
0405
C8
23
Bit Rate
BR=10M/29/(35+1)~9600 bps
06-07
C4
00
Sleep
Power down
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