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USB2514I

Industrial Temperature Rated USB 2.0 High-Speed 4-Port Hub Controller

SMSC -> Microchip 

Industrial Temperature Rated USB 2.0 High-Speed 4-Port Hub Controller

Datasheet

Table 3.3 USB2514 Power, Ground, No Connect

PACKAGE

SYMBOL

VDD18

VDD33PLL

36 QFN

14

36

48 QFN

FUNCTION

17

VDD Core

+1.8V core power. If the internal regulator is enabled, then this pin

must have a 1.0μF (or greater) ±20% (ESR <0.1Ω) capacitor to

VSS.

48

VDD 3.3 PLL Regulator Reference

VDDPLL18

34

VDDA33

5

10

29

VDD33/VDD33CR

23

15

VSS

n/a

+3.3V power supply for the PLL. If the internal PLL 1.8V regulator

is enabled, then this pin acts as the regulator input.

46

VDD PLL

+1.8V Filtered analog power for internal PLL. If the internal

regulator is enabled, then this pin must have a 1.0μF (or greater)

±20% (ESR <0.1Ω) capacitor to VSS.

5

VDD Analog I/O

10

41

+3.3V Filtered analog PHY power, shared between adjacent ports.

30

VDDIO/VDD 3.3 Core Regulator Reference

18

+3.3V power supply for the Digital I/O

If the internal core regulator is enabled, then VDD33CR acts as

the regulator input.

n/a

VSS

Ground

3.2

Buffer Type Descriptions

BUFFER

I

IPD

IPU

IS

O12

OD12

I/O12

Table 3.4 USB2514 Buffer Type Descriptions

DESCRIPTION

Input.

Input with internal weak pull-down resistor.

Input with internal weak pull-up resistor.

Input with Schmitt trigger.

Output 12mA.

Open drain... 12mA sink.

Input/Output buffer with 12mA sink and 12mA source.

Revision 1.98 (11-19-07)

16

DATASHEET

SMSC USB2514i

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