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參數(shù)資料
| 型號： | CC2420 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 2.4 GHz IEEE 802.15.4 / ZigBee-ready RF Transceiver |
| 中文描述： | 2.4 GHz IEEE 802.15.4標準/ ZigBee功能的RF收發(fā)器 |
| 文件頁數(shù)： | 42/87頁 |
| 文件大小： | 1418K |
| 代理商： | CC2420 |
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SmartRF
CC2420
Radio control state machine
CC2420
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 24. The numbers in
brackets refer to the state number
readable in the
FSMSTATE
status register.
Reading the
FSMSTATE
status register 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 24.
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
CC2420
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,
CC2420
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 (IDLE mode) in order to have
access to the RAM and FIFOs.
Chipcon AS
SmartRF
CC2420 Preliminary Datasheet (rev 1.2), 2004-06-09
Page 42 of 87
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CC2420/T&R | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2.4 GHz IEEE 802.15.4 / ZigBee-ready RF Transceiver |
| CC2420/TR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2.4 GHz IEEE 802.15.4 / ZigBee-ready RF Transceiver |
| CC2420DBK | 功能描述:Zigbee/802.15.4開發(fā)工具 CC2420 DEMO KIT 2 DEMO BOARDS RoHS:否 制造商:Silicon Labs 產品:Development Kits 工具用于評估:EM35x 頻率:2.4 GHz 接口類型:USB 工作電源電壓: |
| CC2420DK | 功能描述:Zigbee/802.15.4開發(fā)工具 CC2420 DEVELOPMENT KIT RoHS:否 制造商:Silicon Labs 產品:Development Kits 工具用于評估:EM35x 頻率:2.4 GHz 接口類型:USB 工作電源電壓: |
| CC2420EMK | 功能描述:Zigbee/802.15.4開發(fā)工具 CC2420 EVALUATION KT (2)PCBs & (2)ANTENNA RoHS:否 制造商:Silicon Labs 產品:Development Kits 工具用于評估:EM35x 頻率:2.4 GHz 接口類型:USB 工作電源電壓: |
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