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DR8001 Datasheet(PDF) 6 Page - Murata Manufacturing Co., Ltd. |
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DR8001 Datasheet(HTML) 6 Page - Murata Manufacturing Co., Ltd. |
6 / 8 page 868.35 MHz Transceiver Module RF Monolithics, Inc. Phone: (972) 233-2903 Fax: (972) 387-8148 E-mail: info@rfm.com Page 6 of 8 RFM Europe Phone: 44 1963 251383 Fax: 44 1963 251510 http://www.rfm.com ©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc. DR8001-071107 Power-up Mode Select (J2) J2 is used to select the operating mode of the TR8001 device only at power-up. The state of J2 when VCC is applied will determine whether the board operates in 2G mode or 3G mode. Pin 2 (center pin) of J2 is connected to Pin 19 (CFG) of the TR8001 device and is grounded for 2G mode and functions as the chip select line for the serial interface in 3G mode. Installing the jumper will either connect the CFG pin of the TR8001 to GND or directly to the processor for control in 3G mode. See the table below for power-up jumper settings. After power-up if 3G mode is selected, pin 15 (3G Sel) must be pulled ‘High’ to initiate the processor to operate in 3G mode. Failure to pull pin 15 ‘High’ after power-up will cause the processor to remain inactive. J4 Programming Header (J4) The programming header allows for custom firmware development for the Silicon Labs C8051F330 if desired. Contact RFM for more information about custom firmware development. Setting Power-up Mode Pin 19 J2(1-2) 2G Connected to GND J2(2-3) 3G Connected to Processor |
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