參數(shù)資料
型號(hào)： XIB-E
廠商： Digi International/Maxstream
文件頁(yè)數(shù)： 11/64頁(yè)
文件大?。?/td> 1858K
描述： BOARD INTERFACE ETHERNET
標(biāo)準(zhǔn)包裝： 1
附件類(lèi)型： 接口板
適用于相關(guān)產(chǎn)品： XStream 和 Xcite 收音機(jī)
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2.2. Modes of Operation
XStream OEM RF Modules operate in five modes.
Figure?04. XStream燤odes爋f燨peration?/DIV>
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2.2.1. Idle Mode
When not receiving or transmitting data, the module is in Idle Mode. The module uses the same
amount of power in Idle Mode as it does in Receive Mode.
The module shifts into the other modes of operation under the following conditions:
"   Serial data is received in the DI Buffer (Transmit Mode)
"   Valid RF data is received through the antenna (Receive Mode)
"   Command Mode Sequence is issued (Command Mode)
"   Sleep Mode condition is met (Sleep Mode)
After responding to any of the preceding conditions, the module automatically transitions back
into Idle Mode.
2.2.2. Transmit Mode
After the first byte of serial data is received in the DI buffer (from the UART), the module
attempts to shift to Transmit Mode and initiate RF connections with other modules. After
transmission is complete, the module returns to Idle Mode.
RF transmission begins after either of the following criteria is met:
1.   RB bytes have been received in the DI buffer and are pending for RF transmission [refer to
RB (Packetization Threshold) Command, p29].
 
The RB parameter may be set to any value between 1 and the RF packet size (PK), inclusive.
When RB = 0, the packetization threshold is ignored.
2.   At least one character has been received in the DI buffer (pending for RF transmission) and
RO time has been observed on the UART [refer to RO (Packetization Timeout) Command].
 
The timeout can be disabled by setting RO to zero. In this case, transmission will begin after
RB bytes have been received in the DI buffer.
After either RB or RO conditions are met, the module then initializes a communications channel.
[Channel Initialization is the process of sending an RF initializer that synchronizes receiving
modules with the transmitting module. During channel initialization, incoming serial data
accumulates in the DI buffer.]
Serial data in the DI buffer is grouped into RF packets [refer to PK (RF Packet Size)]; converted
to RF data; then transmitted over-the-air until the DI buffer is empty.
RF data, which includes the payload data, follows the RF initializer. The payload includes up to
the maximum packet size (PK Command) bytes. As the transmitting module nears the end of the
transmission, it inspects the DI buffer to see if more data exists to be transmitted. This could be
the case if more than PK bytes were originally pending in the DI buffer or if more bytes arrived
from the UART after the transmission began. If more data is pending, the transmitting module
assembles a subsequent packet for transmission.
Note: RF reception must
complete before the
module is able to enter
into Transmit Mode.
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XILINXPWR-079 功能描述:電源管理IC開(kāi)發(fā)工具 Pow Mgt Eval Mod for Xilinx FPGAs RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類(lèi)型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
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