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| 型号： | AS3932-BTST |
| 厂商： | ams |
| 文件页数： | 13/34页 |
| 文件大小： | 0K |
| 描述： | IC RF PROGRAM 16-TSSOP |
| 标准包装： | 1 |
| RF 型： | 读/写 |
| 频率： | 110kHz ~ 150kHz |
| 特点： | 配有 RSSI |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 标准包装 |
| 产品目录页面： | 805 (CN2011-ZH PDF) |
| 其它名称： | AS3932-BTSTDKR |
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AS3932
Datasheet - D e t a i l e d D e s c r i p t i o n
ON/OFF mode (Low Power mode 2). All active channels are on at the same time but not for the whole time (time slot T is defined as 1ms).
An on-off duty-ratio is defined. This duty ratio is programmable see R4<7:6> .
Figure 12. ON/OFF Mode
Channel 1
Channel 2
time
Channel 3
time
Presence
of carrier
time
t0
t0+T
2 *t 0
2 *t 0 + T
3 *t 0
time
For each of these sub modes it is possible to enable a further feature called Artificial Wake-up. The Artificial Wake-up is a counter based on the
used RTC. Three bits define a time window see R8<2:0> . If no activity is seen within this time window the chip will produce an interrupt on the
WAKE pin that lasts 128 μs. With this interrupt the microcontroller (μC) can get feedback on the surrounding environment (e.g. read the false
wake-up register R13<7:0> ) and/or take actions in order to change the setup.
8.1.3
Preamble Detection / Pattern Correlation
The preamble detection and pattern correlation are only considered for the wake-up when the data correlator function is enabled (see R1<1> ).
The correlator searches first for preamble frequency (constant frequency of Manchester clock defined according to bit-rate transmission, see
Table 19 ) and then for data pattern.
If the pattern is matched the wake-up interrupt is displayed on the WAKE output and the chip goes in Data receiving mode. If the pattern fails the
internal wake-up (on all active channels) is terminated and no IRQ is produced.
8.1.4
Data Receiving
After a successful wake-up the chip enters the data receiving mode. In this mode the chip can be retained a normal OOK receiver. The received
data are streamed out on the pin DAT. It is possible to put the chip back to listening mode either with a direct command (CLEAR_WAKE (see
Table 12) ) or by using the timeout feature. This feature automatically sets the chip back to listening mode after a certain time R7<7:5> .
www.ams.com/LF-Receiver/AS3932
Revision 1.7
13 - 34
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相关代理商/技术参数 |
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| AS3932-DB | 制造商:ams 功能描述:AS3932 Demo Board Rx & Tx |
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| AS3933 DEV SYSTEM | 功能描述:BOARD DEMO FOR AS3933 制造商:ams 系列:- 零件状态:有效 类型:接收器，ASK 频率:125kHz 配套使用产品/相关产品:AS3933 所含物品:2 板，电源，软件 标准包装:1 |
| AS3933BQFT | 制造商:ams 功能描述:T&R / QFN 16 (4x4) |
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