MRF24XA_15 Datasheet, PDF (202/258 Pages) Microchip Technology – Low-Power, 2.4 GHz ISM-Band IEEE 802.15.4™ RF

MRF24XA
TABLE 9-1: REGISTERS ASSOCIATED WITH OFF PLL POWER-UP, POWER OFF
Names Bit 7 Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
OFFTM
OFFTM<7:0>
RXCON1 RXEN NOPA RXDEC RSVLQIEN RSVRSSIEN RSVCHDREN RSVCFOEN
r
TXCON TXST DTSM TXENC TXBUFEMPTY CSMAEN
DR<2:0>
Legend: r = Reserved, read as ‘0’.
9.2 Operating Channel
MRF24XA is capable of selecting one of sixteen channel
frequencies in the 2.4 GHz band.
The desired channel is selected by configuring the
CHANNEL<3:0> bits in the MACCON2 register. Refer to
Table 9-2 for the MACCON2 register setting for channel
number and frequency.
If Channel Agility is not used, all nodes share the same
channel both in RX and TX modes. The channel is
defined by CHANNEL<3:0> as indicated below.
For more information on Channel Agility, see
Section 7.1 “Channel Agility”.
REGISTER 9-4: MACCON2 (MAC CONTROL 2 REGISTER)
R/W-0000
CHANNEL<3:0>
bit 7
ADDRESS: 0x11
R/W/HS-0000
SECSUITE<3:0>
bit 0
Legend: R = Readable bit W = Writable 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 7-4
bit 3-0
CHANNEL<3:0>: TX/RX Operating Channel field bits⁽¹⁾
These register bits are used as the current operating channel for TX/RX operation.
0x0 = Channel 11
0x1 = Channel 12
•
•
•
0xF = Channel 26
Out of scope
Note 1: Use this field while receiving and transmitting, and must be unmodified while RXEN or TXST is set.
TABLE 9-2:
CHANNEL SELECTION
MACCON2 (0x11) REGISTER
SETTING
CHANNEL<3:0>
Bits in
MACCON2
Channel
Number
Channel
Frequency
0x0
11
2.405 GHz
0x1
12
2.410 GHz
0x2
13
2.415 GHz
0x3
14
2.420 GHz
0x4
15
2.425 GHz
0x5
16
2.430 GHz
0x6
17
2.435 GHz
CHANNEL<3:0>
Bits in
MACCON2
0x7
0x8
0x9
0xA
0xB
0xC
0xD
0xE
0xF
Channel
Number
18
19
20
21
22
23
24
25
26
Channel
Frequency
2.440 GHz
2.445 GHz
2.450 GHz
2.455 GHz
2.460 GHz
2.465 GHz
2.470 GHz
2.475 GHz
2.480 GHz
DS70005023C-page 202
Preliminary
 2015 Microchip Technology Inc.