ST5481TQF7 查看數據表（PDF） - STMicroelectronics

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产品描述 (功能)

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ST5481TQF7

L.O.U.I.S - LOW COST USB ISDN SOLUTION

STMicroelectronics 

ST5481

Pin

Name

Type

Function

35

GNDD2

I

Digital ground

36 CFG0_TEST0

I/O

CFG0 input for configuration when closed or open mode else test9

37

FLTPLL

In analog Used to adjust the internal PLL filter

38

XTALOUT

O

Tied to 15.36MHz external crystal

39

XTALIN

I

Tied to 15.36MHz external crystal

40

GPIO0

I/O

General purpose input-output pin 2mA

41

GPIO1

I/O

General purpose input-output pin 2mA

42

GPIO2

I/O

General purpose input-output pin 2mA

43

GPIO3

I/O

General purpose input-output pin 2mA

44

GNDD1

I

Digital ground

45

GPIO4

I/O

General purpose input-output pin 4mA

46

GPIO5

I/O

General purpose input-output pin 4mA

47

GPIO6

I/O

General purpose input-output pin 4mA

48

GPIO7

I/O

General purpose input-output pin 4mA

3.2 - PLL

An internal oscillator provides a 15.36MHz clock for S interface from an external 15.36MHz crystal. From

this clock, the analog block PLL provides a 48MHz clock for USB data rate recovering.

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