參數(shù)資料
型號(hào): XIB-E
廠商: Digi International/Maxstream
文件頁(yè)數(shù): 13/64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)
XStream"燨EM燫F燤odule?燩roduct燤anual爒5.x00燵2006.02.24]?/DIV>
2.2.3. Receive Mode
If the module detects RF data while in Idle Mode, the module transitions into Receive Mode to
receive RF packets. Once a packet is received, the module checks the CRC to ensure that the
data was transmitted without error. If the CRC data bits on the incoming packet are invalid, the
packet is discarded. If the CRC is valid, the packet proceeds to the DO Buffer.
The module returns to Idle Mode when valid RF data is
no longer detected or after an error is detected in the
received RF data.
牋牘?006燤axStream,營(yíng)nc.燙onfidential燼nd燩roprietary?/DIV>
13?/DIV>
Figure?07. Data燫eception燬equence?SPAN class="pst XIB-E_2593259_2">?/DIV>
?/DIV>
*燫efer爐o爐he燗ddressing爏ection燵p36]爋f爐he牋
RF燙ommunication燤odes燾hapter爁or爉ore爄nformation?/DIV>
regarding燼ddress爎ecognition.?/DIV>
 
 
 
 
 
 
 
2.2.4. Sleep Mode
Sleep Modes enable the XStream Module to operate at minimal power consumption when not in
use. Three Sleep Mode options are available:
 
 
Note: If serial data exists in the DI buffer while the module is in
Receive Mode, the UART data will be transmitted after the module is
finished receiving the RF data and has returned to Idle Mode.
"   Pin Sleep (Host Controlled)
"   Serial Port Sleep (Wake on Serial Port activity)
"   Cyclic Sleep (Wake on RF activity)
For the module to transition into Sleep Mode, the module must have a non-zero SM (Sleep Mode)
Parameter and one of the following must occur:
1.   The module is idle (no data transmission or reception) for a user-defined period of time [See
ST (Time before Sleep) Command]
2.   DI3 (pin 2) is asserted (only for Pin Sleep option)
In Sleep Mode, the module will not transmit or receive data until the module first transitions to
Idle Mode. All Sleep Modes are enabled and disabled using SM Command. Transitions into and
out of Sleep Modes are triggered by various mechanisms as shown in the table below.
Table?01.   Summary爋f燬leep燤ode燙onfigurations?/DIV>
Sleep Mode
Setting
Transition into
Sleep Mode
Transition out of
Sleep Mode
Related
Commands
Typical Power
Consumption
Pin Sleep
(SM = 1)
Microcontroller can shut down and wake
modules by asserting (high) SLEEP (pin 2).
 
Note: Module will complete transmission /
reception before activating Pin Sleep.
De-assert (low)
SLEEP (pin 2).
SM
26 礎(chǔ)
Serial Port Sleep
(SM = 2)
Automatic transition to Sleep Mode occurs
after a user-defined period of inactivity (no
transmitting or receiving of data). The
period of activity is defined using the ST
(Time before Sleep) Command.
When serial byte is
received on the DI pin
(pin 4).
SM, ST
1 mA
Cyclic Sleep
(SM = 3-8)
Automatic transition to Sleep Mode occurs
in cycles as defined by the SM (Sleep
Mode) Command.
 
Note: The cyclic sleep time interval must be
shorter than the Wake-up Initializer Timer
(set by LH Command).
After the cyclic sleep
time interval elapses.
 
Note: Module can be
forced into Idle Mode
if PW (Pin Wake-up)
Command is issued.
SM, ST, HT,
LH, PW
76 礎(chǔ)
when sleeping
 
For爉ore爄nformation燼bout燬leep燤odes,爎efer爐o爐he爄ndividual燾ommands爈isted爄n?Related燙ommands?/DIV>
column爋f爐he爐able.燭he燬M燾ommand爄s燾entral爐o燼ll燬leep燤ode燾onfigurations.?/DIV>
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