5
4888B–RKE–07/06
RF Transceiver Evaluation Kit
4.
Software
4.1
Installation
On the CD-ROM there are different versions setup.exe for the different supported evaluation
boards. Go to the appropriate directory on the CD-ROM (for example, ATAB5811_12) for the
evaluation board in use and run that setup.exe to install the transceiver software. To use the par-
allel port, the driver pport.exe must be installed.
4.2
Getting Started
1.
Start the transceiver software.
2.
Under Options -> XTAL Frequencies, select the appropriate crystal frequency accord-
ing to
Table 4-1
.
3.
Choose Setup -> Transfer Rate and set the fastest supported value.
4.
Select the connected port under Setup -> Parallel Port.
5.
Under File -> Load Settings, four sample settings are predefined. For example, if
433.92MHZ_RX-MODE_FSK_2.4KBIT/S is selected, a configuration for receiving poll-
ing mode with FSK modulation and a data rate of 2.4 kBits/s is loaded. If
433.92MHZ_TX-MODE_FSK_2.4KBIT/S is selected, the appropriate configuration for
transmit mode with FSK modulation and a data rate of 2.4 kBits/s is loaded. LIM_MIN
sets the TX_BAUDRATE. Clicking WRITE ALL starts the PLL running, but the PA
remains off.
In receiving polling mode, the integrated logic searches periodically for a valid transmitter signal.
In the presence of a valid signal, the transceiver switches to permanent receiving mode and the
data is received.
Depending on the configuration of the transceiver, the data stream is stored in the integrated
TX/RX data buffer or is available on pin SDO_TMDO.
If the status register is read in buffered mode, the number of received bytes is shown as the
counter value in the TX/RX buffer window. Clicking READ displays the received data stream in
the TX/RX buffer window.
In transmit mode, the data can be sent using the TX/RX data buffer, or the data stream can be
applied on pin SDI_TMDI.
To use the TX/RX data buffer, the following steps have to be carried out:
• Set the data stream bit-by-bit including a preburst and a start bit.
• Press WRITE to send the data. After the data is sent, a continuous carrier is emitted.
• Set the transceiver back to the desired mode using the control register CREG1.
Further details on the different settings, operation modes, flowcharts, etc. are described in the
datasheet.
Table 4-1.
Crystal Frequencies
RF Frequency [MHz]
Crystal Frequency [MHz]
315
12.7319
433.92
13.2531
868.3
13.4119
915
14.1332
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