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MRF49XA-I/T датащи(PDF) 27 Page - Microchip Technology

номер детали MRF49XA-I/T
подробное описание детали  ISM Band Sub-GHz RF Transceiver
PDF  102 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MRF49XA-I/T датащи(HTML) 27 Page - Microchip Technology

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© 2009-2011 Microchip Technology Inc.
Preliminary
DS70590C-page 27
MRF49XA
REGISTER 2-7:
RXCREG: RECEIVE CONTROL REGISTER (POR: 0x9080)
W-1
W-0
W-0
W-1
W-0
W-0
W-0
W-0
CCB<15:11>
FINTDIO
DIORT<1:0>
bit 15
bit 8
W-1
W-0
W-0
W-0
W-0
W-0
W-0
W-0
RXBW<2:0>
RXLNA<1:0>
DRSSIT<2:0>
bit 7
bit 0
Legend:
r = reserved bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-11
CCB<15:11>: Command Code bits
The command code bits (10010b) are serially sent to the microcontroller to identify the bits to be
written in the RXCREG.
bit 10
FINTDIO: Function Interrupt/Data Indicator Output bit
Sets the pin 16 function as the DIO or interrupt.
1 = DIO output
0 = INT input
bit 9-8
DIORT<1:0>: Data Indicator Output Response Time bits
If pin 16 is selected as DIO, these bits set the response time within which the transceiver detects and
indicates the incoming synchronous bit pattern, and issues an interrupt to the host microcontroller.
11 = Continuous
10 = Slow
01 = Medium
00 = Fast
bit 7-5
RXBW<2:0>: Receiver Baseband Bandwidth bits
These bits set the bandwidth of demodulated data. The bandwidth can accommodate different data
rates and deviations during frequency keying.
111 = Reserved
110 = 67 kHz
101 = 134 kHz
100 = 200 kHz
011 = 270 kHz
010 = 340 kHz
001 = 400 kHz
000 = Reserved
bit 4-3
RXLNA<1:0>: Receiver LNA Gain bits
These bits, when set to different values, can accommodate environments with high interferences. The
LNA gain also affects the true RSSI value.
11 = -20 dB
10 = -14 dB
01 = -6 dB
00 = 0 dB



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