RF31 Hope Microelectronics co., Ltd, RF31 Datasheet - Page 18

• Manufacturer Part Number: RF31
• Description: Rf31 Ism Receiver
• Manufacturer: Hope Microelectronics co., Ltd

1. Enable the Main Digital LDO and the Analog LDOs.
2. Start up crystal oscillator and wait until ready (controlled by timer).
3. Enable PLL.
4. Calibrate VCO (this action is skipped when the vcocal bit is ―0‖, default value is ―1‖).
5. Wait until PLL settles to required transmit frequency (controlled by timer).
6.
7.
8. Enable receive mode in the digital modem.
Depending on the configuration of the radio all or some of the following functions will be performed automatically by
the digital modem: AGC, AFC (optional), update status registers, bit synchronization, packet handling (optional)
including sync word, header check, and CRC.
3.2.4. Device Status
Add
The operational status of the chip can be read from "Register 02h. Device Status".
02
Enable receive circuits: LNA, mixers, and ADC.
Calibrate ADC (RC calibration).
R/W
R
Tel: [phone]
Function/Description
Device Status
Fax: [phone]
D7
ffovfl
D6
ffunfl
D5
rxffem
E-mail: [e-mail]
D4
headerr
D3
D2
http://www.hoperf.com
D1
cps[1]
R F 3 1
D0
cps[0]
POR Def.
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