MRF24XA_15 Datasheet, PDF (208/258 Pages) Microchip Technology – Low-Power, 2.4 GHz ISM-Band IEEE 802.15.4™ RF

MRF24XA
9.4 Automatic Gain Control (AGC)
AGC circuit can provide automatic gain adjustment
according to the Received field strength. AGC gain is
set in four steps.
REGISTER 9-7: BBCON (BASEBAND CONFIGURATION REGISTER)
R/W-0
R/W-0
R/W-11
R/W-0
RNDMOD AFCOVR
RXGAIN<1:0>
PRMBHOLD
bit 7
ADDRESS 0x38
R/W-001
PRMBSZ<2:0>
bit 0
Legend: W = Writable bit R = Readable bit
-n = Value at POR
‘1’ = Bit is set
r = Reserved
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7
bit 6
bit 5-4
bit 3-0
Out of scope
Out of scope
RXGAIN<1:0>: Receiver Gain Register Field bits
By setting this bit, the AGC operation is inhibited in the receiver and the receiver radio gain
Configuration is selected between three different gain levels. Encoding:
11 = AGC operation is enabled (default value)
10 = High gain
01 = Middle gain
00 = Low gain
This feature is used for test and streaming purposes. To reduce the required interframe-gap, the RXGAIN
must be set to one of the fixed gain options when the MAC is in Streaming mode.
Out of scope
DS70005023C-page 208
Preliminary
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