TRW 데이터 시트보기 (PDF) - Unspecified

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TRW

Wireless High Frequency Transceiver Module (RF GFSK)

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5.5.3 TRW-24G ShockBurstTM Receive

MCU interface pins: CE, DR1, CLK1 and DATA (one RX channel receive)

1. Correct address and size of payload of incoming RF packages are set when

TRW-24G is configured to ShockBurstTM RX.

2. To activate RX , set CE high.

3. After 200us settling, TRW-24G is monitoring the air for incoming

communication.

4. When a valid package has been received (correct address and CRC found),

TRW-24G removes the preamble, address and CRC bits.

5. TRW-24G then notifies (interrupts) the MCU by setting the DR1 pin high.

6. MCU may (or may not) set the CE low to disable the RF front end (low

current mode).

7. The MCU will clock out just the payload data at a suitable rate (ex,10 kbps).

8. When all payload data is retrieved TRW-24G sets DR1 low again, and is

ready for new incoming data package if CE is kept high during data

download. If the CE was set low, a new start up sequence can begin, see

Figure 12.

5.5.4 DuoceiverTM Simultaneous Two Channel Receive Mode

In ShockBurstTM mode the TRW-24G can facilitate simultaneous reception of two parallel

independent frequency channels at the maximum data rate. This means:

1. TRW-24G can rec eive data from two 1Mbps transmitters (ex: TRW -24G or

TRW-24G) 8MHz (8 frequency channels) apart through one antenna

interface.

2. The output from the two data channels is fed to two separate MCU

interfaces.

3. Data channel 1:CLK1,DATA,and DR1

4. Data channel 2:CLK2,DOUT2,and DR2

5. DR1 and DR2 are available only in ShockBurstTM.

The TRW-24G DuoCeiverTM technology provides 2 separat e dedicated dat a channels for RX and

replaces the need for two, stand alone receiver systems.

Figure 7 Simultaneous 2 channel receive on TRW -24G

http://www.wenshing.com.tw ; http://www.rf.net.tw

TRW-24G Datasheet P.18

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