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RF64

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6.4. Receiver Configuration parameters - RXParam

The detailed description of the RXParam register is given in Table 29.

Table 29: RXParam Register Description

Name

Bits

Address (d)

Description

PassiveFilt

7-4

r/w

Typical single sideband bandwidth of the passive low-pass filter.

PassiveFilt = 0000 => 65 kHz

0001 => 82 kHz

0010 => 109 kHz

0011 => 137 kHz

0100 => 157 kHz

0101 => 184 kHz

0110 => 211 kHz

0111 => 234 kHz

1000 => 262 kHz

1001 => 321 kHz

1010 => 378 kHz (d)

1011 => 414 kHz

1100 => 458 kHz

1101 => 514 kHz

1110 => 676 kHz

1111 => 987 kHz

ButterFilt

3-0

r/w

Sets the receiver bandwidth. For BW information please refer to

sections 3.4.5 (FSK) and 3.4.6 (OOK).

f  f  200kHz.

xtal MHz .

1 Val(ButterFilt)

12.8MHz

(d): “0011” => fC = 200 kHz

PolypFilt_center

7-4

r/w

Central frequency of the polyphase filter (100kHz recommended):

f  200kHz.

xtal MHz .

1 Val(PolypFilt _ center)

12.8MHz

(d):“0011” => f0 = 100 kHz

Res

3-0

r/w

Reserved

(d): “1000”

PolypFilt_on

r/w

Enable of the polyphase filter, in OOK Rx mode:

0 => off (d)

1 => on

Bitsync_off

r/w

Bit synchronizer: control in Continuous Rx mode:

0 => on (d)

1 => off

Sync_on

r/w

Sync word recognition:

0 => off (d)

1 => on

Sync_size

4-3

r/w

Sync word size:

00 => 8 bits

01 => 16 bits

10 => 24 bits

11 => 32 bits (d)

Sync_tol

2-1

r/w

Number of errors tolerated in the Sync word recognition:

00 => 0 error (d)

01 => 1 error

10 => 2 errors

11 => 3 errors

Res

r/w

Reserved

(d):”0”

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