VT6212 datasheet(13/26 Pages) VIA

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VT6212 / VT6212L PCI USB2.0 Controller

Revision 1.06, December 7, 2005

-7-

Pin Descriptions

Power and Ground

Signal Name

Pin #

Power

Signal Description

VCC33

10, 18, 26, 34, 44, 52,

62, 101, 110, 120,

128

Digital I/O

Digital I/O Power. 3.3V ±100mV

VCC25

4, 35, 53, 115

Internal

Internal Logic Power. 2.5V ±5%

GND

5, 9, 17, 25, 33, 36,

43, 51, 54, 61, 100,

108, 114, 119, 127

Ground

Ground. Connect to primary PCB ground plane.

VCCSUS

Suspend

Suspend I/O Power. Connect to system 3.3V ±5% suspend power

for support of wakeup on USB incoming port activity.

GNDSUS

Suspend

Suspend I/O Ground. Connect to analog ground plane (connected

to primary PCB ground plane through ferrite beads for isolation

from digital switching noise). See Design Guide for details.

VCCUSB[4-1]

72, 76, 80, 84

USB Ports

USB Port Power. Connect to system 3.3V ±5% suspend power for

support of wakeup on USB incoming port activity.

GNDUSB[4-1]

75, 79, 83, 87

USB Ports

USB Port 1-4 Analog Ground. Connect to analog ground plane

(connected to primary PCB ground plane through ferrite beads for

isolation from digital switching noise).

See Design Guide for

details.

VCCPLL

PLL

PLL Digital Power. Connect to quiet 2.5V ±5% power source.

GNDPLL

PLL

PLL Digital Ground. Connect to analog ground plane (connected

to primary PCB ground plane through ferrite beads for isolation

from digital switching noise). See Design Guide for details.

VCCPLLA

PLL

PLL Analog Power. Connect to quiet 2.5V ±5% power source.

GNDPLLA

PLL

PLL Analog Ground. Connect to analog ground plane (connected

to primary PCB ground plane through ferrite beads for isolation

from digital switching noise). See Design Guide for details.

VCCOSC

OSC

Oscillator Power. Connect to quiet 2.5V ±5% power source.

GNDOSC

OSC

Oscillator Analog Ground.

Connect to analog ground plane

(connected to primary PCB ground plane through ferrite beads for

isolation from digital switching noise).

See Design Guide for

details.

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