MRF89XA datasheet(32/140 Pages) MICROCHIP

32 / 140 page

MRF89XA

DS70000622D-page 32

Preliminary

 2010-2017 Microchip Technology Inc.

2.14.3

FREQUENCY DEVIATION CONTROL REGISTER DETAILS

FDEVREG: FREQUENCY DEVIATION CONTROL REGISTER

(ADDRESS:0X02) (POR:0X03)

2.14.4

BIT RATE SET REGISTER DETAILS

BRSREG: BIT RATE SET REGISTER (ADDRESS:0x03) (POR:0x07)

R/W-0

R/W-1

FDVAL<7:0>

bit 7

bit 0

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

r = Reserved

bit 7-0

FDVAL<7:0>: Frequency Deviation Value bits

The bits indicate single side frequency deviation (in bit value) in FSK Transmit mode.

FDVAL = 00000011  fdev = 100 kHz (default)

Note 1: fdev is used throughout the data sheet to understand the term frequency deviation and is calculated using

FDVAL<7:0> from FDEVREG.

fdev

fxtal

FDVAL 1







---------------------------------------------------

Where,

FDVAL is the value in the register and has the range from 0 ≤ FDVAL ≤ 255. Refer to Section 3.3.3,

fdev Setting in FSK Mode and Section 3.3.4, fdev Setting in OOK Mode for more information on

the fdev setting for FSK and OOK modes.

R/W-0

R/W-1

—BRVAL<6:0>

bit 7

bit 0

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

r = Reserved

bit 7

Reserved: Reserved bit; do not use

0 = Reserved (default)

bit 6-0

BRVAL<6:0>: Bit Rate Value bits

These bits set the bit rate (in bit value) of:

Note 1: The Bit Rates are good for crystal frequency of 12.8 MHz which is taken as a reference throughout the

data sheet.

BitRate

fxtal

64 BRVAL 1



--------------------------------------------

BRVAL<6:0> = 0000111  Bit Rate = 25 kbps NRZ (default)

Where, BRVAL is the value in the register and has the range from 0 ≤ BRVAL ≤ 127.

MRF89XA Datasheet(PDF) 32 Page - Microchip Technology

MRF89XA Datasheet(HTML) 32 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL