USB3319C-CP-TR Ver la hoja de datos (PDF) - SMSC -> Microchip

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USB3319C-CP-TR

Hi-Speed USB Transceiver with 1.8V ULPI Interface - 13MHz Reference Clock

SMSC -> Microchip 

Hi-Speed USB Transceiver with 1.8V ULPI Interface - 13MHz Reference Clock

PIN/

BALL

15

C5

16

B4

17

B5

18

A5

19

A4

20

A3

21

B3

22

B2

23

A2

24

A1

FLAG

C3

Table 1 USB3319 Pin Description (continued)

NAME

DATA[2]

DIRECTION/ ACTIVE

TYPE

LEVEL

DESCRIPTION

I/O,

CMOS

N/A ULPI bi-directional data bus.

DATA[1]

I/O,

CMOS

N/A ULPI bi-directional data bus.

DATA[0]

NXT

DIR

STP

VDD1.8

RESETB

REFCLK

I/O,

CMOS

Output,

CMOS

Output,

CMOS

Input,

CMOS

Power

Input,

CMOS,

Input,

CMOS

N/A

High

N/A

High

N/A

Low

N/A

ULPI bi-directional data bus. DATA[0] is

the LSB.

The PHY asserts NXT to throttle the data.

When the Link is sending data to the

PHY, NXT indicates when the current

byte has been accepted by the PHY. The

Link places the next byte on the data bus

in the following clock cycle.

Controls the direction of the data bus.

When the PHY has data to transfer to the

Link, it drives DIR high to take ownership

of the bus. When the PHY has no data to

transfer it drives DIR low and monitors

the bus for commands from the Link.

The Link asserts STP for one clock cycle

to stop the data stream currently on the

bus. If the Link is sending data to the

PHY, STP indicates the last byte of data

was on the bus in the previous cycle.

External 1.8V Supply input pin. This pad

needs to be bypassed with a 0.1uF

capacitor to ground, placed as close as

possible to the USB3319.

When low, the part is suspended with all

of the I/O tri-stated. When high the

USB3319 will operate as a normal ULPI

device.

13MHz Reference Clock input.

RBIAS

GND

Analog,

CMOS

Ground

N/A Bias Resistor pin. This pin requires an

8.06kΩ (±1%) resistor to ground, placed

as close as possible to the USB3319.

N/A Ground.

QFN only: The flag should be connected

to the ground plane with a via array

under the exposed flag. This is the main

ground for the IC.

SMSC USB3319 REV C

7

PRODUCT PREVIEW

Revision 2.1 (06-10-10)

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