MRF24J40T-ISLASHML datasheet(92/151 Pages) MICROCHIP

92 / 151 page

MRF24J40

DS30009776E-page 92

Preliminary

 2021 Microchip Technology Inc.

3.4

Channel Selection

The MRF24J40 is capable of selecting one of sixteen

channel frequencies in the 2.4 GHz band. The desired

channel is selected by configuring the CHANNEL bits

in the RFCON0 (0x200[7:4]) register. See Table 3-4 for

the RFCON0 register setting for channel number and

frequency.

TABLE 3-4:

CHANNEL SELECTION

RFCON0 (0x200) REGISTER

SETTING

TABLE 3-5:

REGISTERS ASSOCIATED WITH CHANNEL SELECTION

Note:

Perform an RF State Machine Reset (see

Section 3.1 “Reset”) after a channel

frequency change. Then, delay at least

192

s after the RF State Machine Reset,

to allow the RF circuitry to calibrate.

Channel

Number

Frequency

Set Value

2.405 GHz

0x03

2.410 GHz

0x13

2.415 GHz

0x23

2.420 GHz

0x33

2.425 GHz

0x43

2.430 GHz

0x53

2.435 GHz

0x63

2.440 GHz

0x73

2.445 GHz

0x83

2.450 GHz

0x93

2.455 GHz

0xA3

2.460 GHz

0xB3

2.465 GHz

0xC3

2.470 GHz

0xD3

2.475 GHz

0xE3

2.480 GHz

0xF3

Addr.

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

0x36 RFCTL

WAKECNT8 WAKECNT7 RFRST

RFTX-

MODE

RFRX-

MODE

0x200 RFCON0 CHANNEL3 CHANNEL2 CHANNEL1 CHANNEL0

RFOPT3

RFOPT2 RFOPT1 RFOPT0

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