SI4322-A0-FT【PDF 9/22 页】IC RX FSK UNI 868/915MHZ 16TSSOP

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Si4322

Control Commands

Control Word

Configuration Setting Command

Frequency Setting Command

Receiver Setting Command

Wake-up Timer Command

Extended Wake-up Timer

Command

Low Battery Detector

and Clock Divider Command

AFC Control Command

Data Rate Command

Data Filter Command

Output and FIFO Command

Extended Features Command

Status Read Command

Related Parameters/Functions

frequency band, crystal oscillator load capacitance, baseband filter bandwidth, etc.

frequency of the local oscillator

VDI source, LNA gain, RSSI threshold

wake-up time period

wake-up time period finer adjustment

LBD voltage and microcontroller clock division ratio

AFC parameters

bit rate

data filter type, clock recovery parameters, POR level selection, autosleep mode

FIFO IT level, FIFO start control, FIFO enable and FIFO fill enable

low frequency output clock, wake-up timer extra functions, long FIFO extra funcions

receiver status read

Not e : In the following tables the POR column shows the default values of the command registers after power-on.

Configuration Setting Command

bit

15

1

14

0

13

0

12

1

11

bs

10

eb

9

et

8

ex

7

x3

6

x2

5

x1

4

x0

3

i2

2

i1

1

i0

0

dc

POR

938Ah

bs

0

1

Frequency Band [MHz]

868

915

x3

x2

x1

x0

Crystal Load

Capacitance [pF]

i2

0

0

i1

0

0

i0

0

1

Baseband

Bandwidth [kHz]

reserved

400

0

0

0

0

0

0

0

0

0

0

1

1

0

1

0

1

8.5

9.0

9.5

10.0

0

1

0

340

……

….

0

1

1

0

1

0

270

200

1

1

1

1

1

1

0

1

15.5

16.0

1

1

0

1

1

0

134

reserved

1

1

1

reserved

Bits eb and et control the operation of the low battery detector and wake-up

timer, respectively. They are enabled when the corresponding bit is set.

If ex is set the crystal is active during non-active mode.

When dc bit is set it disables the clock output

9

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