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| 型号： | A09-HASM-675 |
| 厂商： | Digi International/Maxstream |
| 文件页数： | 15/71页 |
| 文件大小： | 0K |
| 描述： | ANT 900MHZ 6" R/A JOINT W/RPSMA |
| 标准包装： | 25 |
| 系列： | A09-HASM |
| 天线类型： | 鞭状：1/2 波，直角 |
| 频带数目： | 1 |
| 频率： | 915MHz（902MHz ~ 928MHz） |
| 增益： | 2.1dBi |
| 端子： | RP-SMA |
| 安装类型： | 连接器 |
| 包装： | 散装 |
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9XTend? ? OEM ? RF ? Module ?‐? Product ? Manual ? v2.x4x ? [2007.01.04]
Chapter ? 2 ?‐? RF ? Module ? Operation
2.2.5. Sleep Mode
Software Sleep
Sleep Modes enable the module to enter states of low-power consumption when not in use. Three
software Sleep Modes are supported:
? Pin Sleep (Host Controlled)
? Serial Port Sleep (Wake on Serial Port activity)
? Cyclic Sleep (Wake on RF activity)
In order to enter Sleep Mode, one of the following conditions must be met (in addition to the mod-
ule having a non-zero SM parameter value):
1.
2.
The module is idle (no data transmission or reception) for the amount of time defined by
the ST (Time before Sleep) parameter. [NOTE: ST is only active when SM = 4-5.]
SLEEP (pin 8) is asserted (only for the ‘Pin Sleep’ option).
When 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 ? 2 ‐ 01.
Summary ? of ? Sleep ? Mode ? Configurations
Sleep Mode
Transition into
Transition out of Sleep
Related
Power
(Setting)
Sleep Mode
Mode (wake)
Commands Consumption
Pin Sleep
(SM = 1)
Assert (high) SLEEP pin - A micro
controller can shut down and wake
modules via the SLEEP pin.
Note: The module will complete a
transmission or reception before
activating Pin Sleep.
De-assert (low) SLEEP pin
(SM)
< 147 μA
the DI pin
Serial Port Sleep
(SM = 2)
Automatic transition to Sleep Mode
occurs after a user-defined period of
inactivity (no transmitting or receiving of When a serial byte is received on
data).
(SM), ST
< 10 mA
Period of inactivity is defined by the ST
(Time before Sleep) Command.
LH, PW
Cyclic Sleep
(SM = 4 - 8)
RF module transitions in and out of Sleep Mode in cycles (user-selectable
wake-up interval of time is set using the SM command). The cyclic sleep
interval of time must be shorter than the interval of time that is defined by the (SM), ST, HT,
LH (Wake-up Initializer TImer) command.
Note: The module can be forced into Idle Mode using the SLEEP pin if the PW
(Pin Wake-up) command is issued.
< 1.6 mA
when sleeping
(SM=4, 1 sec.,
@120K baud)
The SM (Sleep Mode) command is central to setting all Sleep Mode configurations. By default,
Sleep Modes are disabled (SM = 0) and the module remains in Idle/Receive Mode. When in this
state, the module remains constantly ready to respond to serial or RF activity.
Refer to the ‘Hardware Sleep’ section of the ‘Shutdown Mode’ section [previous page] to enable the
module's lowest power-consuming state (5 μA typical power-down current).
Pin Sleep (SM = 1)
? Pin/Host-controlled
? Typical power-down current: < 147 μA
This mode is voltage level activated. When the SLEEP pin is asserted, the module will finish any
transmitting or receiving activity; enter Idle Mode; then enter a state of sleep. When in Pin Sleep
Mode, the module will not respond to serial or RF activity.
After enabling Pin Sleep, the SLEEP pin controls whether the module is active or sleeping. When
SLEEP is de-asserted, the module is fully operational. When SLEEP is asserted, the module transi-
tions to Sleep Mode and remains in its lowest power-consuming state until the pin is de-asserted.
This pin is only active if the module is setup to operate in this mode; otherwise the pin is ignored.
? ? 2007 ? MaxStream, ? Inc.
????? 15
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