Electronic Components Datasheet Search |
|
RF96 Datasheet(PDF) 54 Page - HOPE Microelectronics CO., Ltd. |
|
RF96 Datasheet(HTML) 54 Page - HOPE Microelectronics CO., Ltd. |
54 / 121 page Page 54 RF96/97/98 Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com WIRELESS & SENSING PRELIMINARY DATASHEET Automatic restart capabilities are detailed in Section 4.2.7. The receiver startup options available in RF96/97/98 are described in Table 69. Table 69 Receiver Startup Options Triggering Event Realized Function AgcAutoOn AfcAutoOn RxTrigger (2:0) None None 0 0 000 Rssi Interrupt AGC 1 0 001 AGC & AFC 1 1 001 PreambleDetect AGC 1 0 110 AGC & AFC 1 1 110 Rssi Interrupt & PreambleDetect AGC 1 0 111 AGC & AFC 1 1 111 When AgcAutoOn=0, the LNA gain is manually selected by choosing LnaGain bits in RegLna. 4.2.7. Receiver Restart Methods The options for restart of the receiver are covered below. This is typically of use to prepare for the reception of a new signal whose strength or carrier frequency is different from the preceding packet to allow the AGC or AFC to be re-evaluated. 4.2.7.1. Restart Upon User Request In Receive mode the user can request a receiver restart - this can be useful in conjunction with the use of a Timeout interrupt following a period of inactivity in the channel of interest. Two options are available: No change in the Local Oscillator upon restart: the AFC is disabled, and the Frf register has not been changed through SPI before the restart instruction: set bit RestartRxWithoutPllLock in RegRxConfig to 1. Local Oscillator change upon restart: if AFC is enabled (AfcAutoOn=1), and/or the Frf register had been changed during the last Rx period: set bit RestartRxWithPllLock in RegRxConfig to 1. Note ModeReady must be at logic level 1 for a new RestartRx command to be taken into account. 4.2.7.2. Automatic Restart after valid Packet Reception The bits AutoRestartRxMode in RegSyncConfig control the automatic restart feature of the RF96/97/98 receiver, when a valid packet has been received: If AutoRestartRxMode = 00, the function is off, and the user should manually restart the receiver upon valid packet reception (see section 4.2.7.1). If AutoRestartRxMode = 01, after the user has emptied the FIFO following a PayloadReady interrupt, the receiver will automatically restart itself after a delay of InterPacketRxDelay, allowing for the distant transmitter to ramp down, hence avoiding a false RSSI detection on the „tail‟ of the previous packet. If AutoRestartRxMode = 10 should be used if the next reception is expected on a new frequency, i.e. Frf is changed after the reception of the previous packet. An additional delay is systematically added, in order for the PLL to lock at a new frequency. |
Similar Part No. - RF96 |
|
Similar Description - RF96 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |