RF64 datasheet(59/76 Pages) ETC2

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ADVANCED COMMUNICATIONS & SENSING

Page 59 of 76

RF64

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OOK_thresh_type

3-2

r/w

OOK demodulator threshold type:

00 -> fixed threshold mode

01 -> peak mode (d)

10 -> average mode

11 -> reserved

IF_gain

1-0

r/w

Gain on the IF chain:

00-> maximal gain (0dB) (d)

01 -> -4.5 dB

10 -> -9dB

11-> -13.5 dB

Freq_dev

7-0

r/w

Single side frequency deviation in FSK Transmit mode:

Refer to sections 3.3.4 and 3.3.5

Fdev =

XTAL

, 0

≤ D ≤ 255, where D is the value in the register.

32 (D  1)

(d): D =

“00000011” => Fdev = 100 kHz

BR_C

7-0

r/w

C coefficient of the bit rate

Bit Rate =

XTAL

0 ≤ C ≤ 255, where C is the value in the register.

2  (C  1)*(D  1)

(d): C =

“0000111” => Bit Rate = 25 kb/s NRZ

BR_D

7-0

r/w

D coefficient of the bit rate

Bit Rate =

XTAL

, 15 ≤ D ≤ 255, where D is the value in the register.

2  (C  1)*(D  1)

(d): D =

“0001111” => Bit Rate = 25 kb/s NRZ

PA_ramp

7-6

r/w

Ramp control of the rise and fall times of the Tx PA regulator output voltage in

OOK mode:

00=> 3us

01=> 8.5 us

10 => 15 us

11=> 23 us (d)

Low_power_rx

r/w

Enables the low power mode of the receiver by reducing the bias current

of the LNA.

0 -> Low power mode disabled (d)

1 -> Low power mode enabled

Trim_band

2-1

r/w

VCO trimming: (d) 11

RF_frequency

r/w

Selection between the two RF frequencies defined by the

SynthRi, SynthPi, and SynthSi registers:

0 -> frequency 1 for R1,P1,S1 (d)

1 -> frequency 2 for R2,P2,S2

7-0

r/w

R counter, active when RPS_

select=”0”

(d):6Bh; default values of R1, P1, S1 generate 434.0 MHz in FSK mode

7-0

r/w

P counter, active when RPS_

select=”0”

(d): 2Ah; default values of R1, P1, S1 generate 434.0 MHz in FSK mode

7-0

r/w

S counter, active when RPS_

select=”0”

(d): 1Eh; default values of R1, P1, S1 generate 434.0 MHz in FSK mode

7-0

r/w

R counter, active when RPS_

select=”1”

(d): 77h; default values of R2, P2, S2 generate 435.0 MHz in FSK mode

7-0

r/w

P counter, active when RPS_

select=”1”

(d): 2Fh; default values of R2, P2, S2 generate 435.0 MHz in FSK mode

7-0

r/w

S counter, active when RPS_

select=”1”

(d): 19h; default values of R2, P2, S2 generate 435.0 MHz in FSK mode

Res

2-0

r/w

Reserved

(d):”000”

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