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參數資料
| 型號： | EM2420TR |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 2.4 GHz IEEE 802.15.4 / ZigBee RF Transceiver |
| 中文描述： | 2.4 GHz IEEE 802.15.4標準/ ZigBee的射頻收發(fā)器 |
| 文件頁數： | 42/89頁 |
| 文件大?。?/td> | 1758K |
| 代理商： | EM2420TR |
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EM2420
Ember Part Number: 120-0049-000
C
EM2420 Datasheet
Page 42 of 89
Radio control state machine
The
EM2420
has a built-in state machine
that is used to switch between different
operation states (modes). The change of
state is done either by using command
strobes or by internal events such as SFD
detected in receive mode.
The radio control state machine states are
shown in Figure 23. The numbers in
brackets refer to the state number
readable in the
FSMSTATE
status register.
This functionality is primarily for test /
debug purposes.
Before using the radio in either RX or TX
mode, the voltage regulator and crystal
oscillator must be turned on and become
stable. The voltage regulator and crystal
oscillator startup times are given in the
Electrical Specifications section on page
9.
The crystal oscillator is controlled by
accessing the
SXOSCON
/
SXOSCOFF
command strobes. The
XOSC16M_STABLE
bit in the status register returned during
address transfer indicates whether the
oscillator is running and stable or not (see
Table 5). This status register can be polled
when waiting for the oscillator to start.
For
synthesizer (FS) can also be manually
calibrated and started by using the
STXCAL
command strobe register. This
will not start a transmission before a
STXON command strobe is issued. This is
not shown in Figure 23.
test
purposes,
the
frequency
Enabling transmission is done by issuing a
STXON
or
STXONCCA
command strobe.
Turning off RF can be accomplished by
using one of the
SRFOFF
or
SXOSCOFF
command strobe registers.
After reset, the
EM2420
is in Power Down
mode. All configuration registers can then
be programmed in order to make the chip
ready to operate at the correct frequency
and mode. Due to the very fast start-up
time, the
EM2420
can remain in Power
Down until a transmission session is
requested.
As also described in the 4-wire Serial
Configuration and Data Interface section
on page 25, the crystal oscillator must be
running in order to have access to the
RAM and FIFOs.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| EM242302 | 功能描述:柵欄接線端子 EURO MC421-38102 TERM RoHS:否 制造商:TE Connectivity / AMP 產品:Barrier Terminal Blocks 系列: 類型:Dual Barrier, Flat Block without Mounting Ears 節(jié)距:9.53 mm 位置/觸點數量:2 線規(guī)量程:22-12 電流額定值:20 A 電壓額定值:300 V 安裝風格:Through Hole 安裝角:Vertical 端接類型:Screw 觸點電鍍:Tin |
| EM242303 | 功能描述:柵欄接線端子 EURO MC421-38103 TERM RoHS:否 制造商:TE Connectivity / AMP 產品:Barrier Terminal Blocks 系列: 類型:Dual Barrier, Flat Block without Mounting Ears 節(jié)距:9.53 mm 位置/觸點數量:2 線規(guī)量程:22-12 電流額定值:20 A 電壓額定值:300 V 安裝風格:Through Hole 安裝角:Vertical 端接類型:Screw 觸點電鍍:Tin |
| EM242608H | 功能描述:可插拔接線端子 EuroMag Pluggable Terminal Block RoHS:否 制造商:Phoenix Contact 產品:Plugs 系列:PTS 端接類型:Spring Cage 位置/觸點數量:5 線規(guī)量程:26-14 節(jié)距:5 mm 電流額定值:10 A 電壓額定值:250 V 安裝風格: 安裝角: 觸點電鍍: |
| EM-24346-C36 | 功能描述:麥克風 3.61 X 3.61 X 2.21MM -52 SENS, 12SL PORT RoHS:否 制造商:Knowles Acoustics 方向性:Omnidirectional 阻抗:4.4 K Ohms 工作電壓:0.9 V to 10 V 靈敏度:- 53 dB 端接類型:Wire Leads 長度:5.56 mm 寬度:3.98 mm 深度:2.21 mm |
| EM-24346-D65 | 功能描述:100Hz ~ 10kHz Analog Microphone Electret Condenser 1.3V Omnidirectional (-52dB ±3dB @ 74dB SPL) Solder Pads 制造商:knowles 系列:EM 包裝:托盤 零件狀態(tài):有效 類型:駐極體電容 輸出類型:模擬 方向:全向 頻率范圍:100Hz ~ 10kHz 靈敏度:-52dB ±3dB @ 74dB SPL 信噪比:- 阻抗:4.4 千歐 電壓 - 額定:1.3V 電壓范圍:0.9 ~ 3V 電流 - 電源:50μA 端口位置:側面 密封等級:無 端接:焊盤 大小/尺寸:3.57mm 長 x 3.57mm 寬 高度（最大值）:2.21mm 形狀:方形 標準包裝:25 |
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