SI3233-X-FM View Datasheet(PDF) - Silicon Laboratories

Part Name

Description

Manufacturer

SI3233-X-FM

PROSLIC® PROGRAMMABLE CMOS SLIC WITH RINGING/BATTERY VOLTAGE GENERATION

Silicon Laboratories 

5. Pin Descriptions: Si3233

NC 1 38 37 36 35 34 33 32 31

FSYNC 2

30

RESET 3

29

SDCH 4

28

SDCL 5

27

VDDA1 6

26

IREF 7

25

CAPP 8

24

QGND 9

23

CAPM 10

22

STIPDC 11

21

SRINGDC 12 13 14 15 16 17 18 19 20

SDITHRU

DCDRV

DCFF

TEST1

GNDD

VDDD

ITIPN

ITIPP

VDDA2

IRINGP

IRINGN

IGMP

Si3233

Pin #

35

36

37

38

1

2

3

4

5

6

7

Name

Description

CS

INT

PCLK

TEST2

NC

FSYNC

RESET

SDCH

SDCL

VDDA1

IREF

Chip Select.

Active low. When inactive, SCLK and SDI are ignored and SDO is high impedance. When

active, the serial port is operational.

Interrupt.

Maskable interrupt output. Open drain output for wire-ORed operation.

PCM Bus Clock.

Clock input.

Test.

Enables test modes for Silicon Labs internal testing. This pin should always be tied to

ground for normal operation.

No Connect.

Frame Synch.

8 kHz frame synchronization signal for the PCM bus. May be short or long pulse format.

Reset.

Active low input. Hardware reset used to place all control registers in the default state.

DC Monitor.

DC-DC converter monitor input used to detect overcurrent situations in the converter.

DC Monitor.

DC-DC converter monitor input used to detect overcurrent situations in the converter.

Analog Supply Voltage.

Analog power supply for internal analog circuitry.

Current Reference.

Connects to an external resistor used to provide a high accuracy reference current.

Preliminary Rev. 0.5

91

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