UPD72012GB-004 datasheet(9/36 Pages) NEC

Part #	UPD72012GB-004

Description	HUB CONTROLLER FOR UNIVERSAL SERIAL BUS

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Manufacturer	NEC [NEC]

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Data Sheet S13918EJ3V0DS

9

µPD72012

(3/3)

Pin No.

Note 1

Pin Name

I/O

Signal Name

Function

31(37)

CLKSEL

I

CLK SELECT

Pin for selecting whether to use 48 MHz oscillator or 4 MHz crystal

oscillator (refer to Table 1-1).

32(38)

DVDD

(Buffer)

-DVDD

(Buffer)

Connect to 3.3 V power supply.

(39)

DVDD

-

DVDD

Connect to 3.3 V power supply. This pin is used together with pin No.

32 internally in the shrink DIP product.

33(40)

PP1

O

PORTPOWER#1

Low active open drain output pin that controls downstream port #1

power supply.

Input the output of this pin to the power control element of an external

circuit.

If not using this pin, leave it unconnected.

Note 2

34(41)

PP2

O

PORTPOWER#2

Low active open drain output pin that controls downstream port #2

power supply.

Input the output of this pin to the power control element of an external

circuit.

If not using this pin, leave it unconnected.

Note 2

35(42)

PP3

O

PORTPOWER#3

Low active open drain output pin that controls downstream port #3

power supply.

Input the output of this pin to the power control element of an external

circuit.

If not using this pin, leave it unconnected.

Note 2

36(43)

PP4

O

PORTPOWER#4

Low active open drain output pin that controls downstream port #4

power supply.

Input the output of this pin to the power control element of an external

circuit.

If not using this pin, leave it unconnected.

Note 2

37(44)

PP5

O

PORTPOWER#5

Low active open drain output pin that controls downstream port #5

power supply.

Input the output of this pin to the power control element of an external

circuit.

If not using this pin, leave it unconnected.

Note 2

38(1)

DVDD

-DVDD

(TS0)

Test pin of

µPD72012 (corresponds to TS0 pin in µPD72011).

Connect to 3.3 V power supply.

39(2)

DGND

-

DGND

Connect to GND.

40(3)

PSSEL

I

Power SW

Pin that selects switching between bus power and self-power (refer to

Table 1-2).

To make high level, pull up to 3.3 V.

41(4)

PVSEL

I

Port Value

Pin that selects switching between number (4 or 5) of downstream

ports (refer to Table 1-2).

To make high level, pull up to 3.3 V.

42(5)

DGND

-

DGND

(TS2)

Test pin of

µPD72012 (corresponds to TS2 pin in µPD72011).

Connect to GND.

Notes 1.

QFP pin numbers are shown in ( ).

2.

For details, refer to Table 1-4 of 1.2 Tables by Pin Function.

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UPD72012GB-004 Datasheet(PDF) 9 Page - NEC

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