Silicon Laboratories SI4421 Manual do Utilizador descarregar pdf (Página 37)

Si4702/03-C19

Rev. 1.1 37

7. Pin Descriptions: Si4702/03-C19

Pin Number(s) Name Description

1, 20 NC No Connect. Leave floating.

2 FMIP FM RF inputs.

3 RFGND RF ground. Connect to ground plane on PCB.

4, 12, 15, PAD GND Ground. Connect to ground plane on PCB.

RST

Device reset input (active low).

SEN

Serial enable input (active low).

7 SCLK Serial clock input.

8 SDIO Serial data input/output.

9 RCLK External reference oscillator input.

10 V

I/O supply voltage.

11 V

Digital supply voltage. May be connected directly to battery.

13 ROUT Right audio output.

14 LOUT Left audio output.

16 V

Analog supply voltage. May be connected directly to battery.

17, 18, 19 GPIO3, GPIO2,

GPIO1

General purpose input/output.

Top View

GND

PAD

GPIO1

RCLK

GND

LOUT

ROUT

RST

GND

SDIO

SCLK

GND

FMIP

RFGND

GPIO2

GPIO3

SEN

7 1098

17181920 16

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 45 46

Si4702/03-C19 1
TABLE OF CONTENTS 3
1. Electrical Specifications 4
4. Functional Description 15
4.1. Overview 15
4.2. FM Receiver 15
4.6. Tuning 17
4.7. Reference Clock 18
4.8. Control Interface 18
6. Register Descriptions 23
8. Ordering Guide 38
9.1. Si4702 Top Mark 39
9.2. Si4703 Top Mark 39
9.3. Top Mark Explanation 39
Revision 0.8 to Revision 0.9 44
Revision 0.9 to Revision 1.0 44
Revision 1.0 to Revision 1.1 44

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Silicon Laboratories SI4421 Manual do Utilizador Página 37

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