USB3318C-CP-TR Просмотр технического описания (PDF) - Microchip Technology

Номер в каталоге

Компоненты Описание

производитель

USB3318C-CP-TR

Hi-Speed USB Transceiver with 1.8V-3.3V ULPI Interface - 13MHz Reference Clock

Microchip Technology 

Hi-Speed USB Transceiver with 1.8V-3.3V ULPI Interface - 13MHz Reference Clock

Datasheet

Table 2.1 USB3318 Pin Description (continued)

PIN

DIRECTION/ ACTIVE

NAME

TYPE

LEVEL

DESCRIPTION

19

DIR

Output,

N/A Controls the direction of the data bus.

CMOS

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.

20

STP

Input,

High The Link asserts STP for one clock cycle

CMOS

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.

21

VDD1.8

Power

N/A 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 USB3318.

22

RESETB

Input,

N/A When low, the part is suspended with all

CMOS,

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

USB3318 will operate as a normal ULPI

device.

23

REFCLK

Input,

N/A 13MHz Reference Clock input.

CMOS

24

FLAG

RBIAS

GND

Analog,

CMOS

Ground

N/A Rbias pin. This pin requires an 8.06kΩ

(±1%) resistor to ground, placed as close

as possible to the USB3318.

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 USB3318 REV C

11

DATASHEET

Revision 2.1 (06-02-10)

Share Link: