MCP2210T-I-MQ datasheet(4/82 Pages) MICROCHIP

tên linh kiện	MCP2210T-I-MQ

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MCP2210

DS22288A-page 4

 2011 Microchip Technology Inc.

1.1

Supported Operating Systems

The following operating systems are supported:

• Windows XP/Vista/7

•Linux

•Mac OS

1.1.1

ENUMERATION

The MCP2210 will enumerate as a USB device after

Power-on Reset (POR). The device enumerates as a

Human Interface Device (HID) only.

1.1.1.1

Human Interface Device (HID)

The MCP2210 enumerates as an HID, so the device

can be configured and all the other functionalities can

be controlled. A DLL package that facilitates I/O control

through a custom interface is supplied by Microchip

and is available on the product landing page.

1.2

Control Module

The control module is the heart of the MCP2210. All

other modules are tied together and controlled via the

control module. The control module manages the data

transfers between the USB and the SPI, as well as

command requests generated by the USB host

controller, and commands for controlling the function of

the SPI and I/O.

1.2.1

SPI INTERFACE

The control module interfaces to the SPI and USB

modules.

1.2.2

INTERFACING TO THE DEVICE

The MCP2210 can be accessed for reading and writing

via USB host commands. The device cannot be

accessed and controlled via the SPI interface.

1.3

SPI Module

The MCP2210 SPI module provides the MOSI, MISO

and SCK signals to the outside world. The module has

the ability to control the GP pins (as Chip Select) only if

these pins are configured for Chip Select operation.

1.3.1

SPI MODULE FEATURES

The SPI module has the following configurable

features:

•Bit rates

•Delays

• Chip Select pin assignments (up to 9 Chip Select

lines)

All the above features are available for customization

using certain USB commands.

1.3.2

SPI MODULE POWER-UP

CONFIGURATION

Default parameters:

•1 Mbit

• 4 bytes to transfer per SPI transaction

• GP1 as Chip Select line

1.4

USB Protocol Controller

The USB controller in the MCP2210 is full-speed USB

2.0 compliant.

• HID only device used for:

- SPI transfers

- I/O control

- EEPROM access

- Chip configuration manipulation

• 128-byte buffer to handle data for SPI transfers

- 64-byte transmit

- 64-byte receive

• Fully configurable VID, PID assignments, string

descriptors (stored on-chip) and chip power-up

settings (default chip settings and SPI transfer

parameters)

• Bus powered or self-powered

1.4.1

DESCRIPTORS

The string descriptors are stored internally in the

MCP2210 and they can be changed so when the chip

enumerates, the host gets the customer’s own product

and manufacturer names. They can be customized to

the user’s needs by using the Microchip provided con-

figuration utility or a custom built application that will

send the proper USB commands for storing the new

descriptors into the chip.

1.4.2

USB EVENTS

The MCP2210 provides support for signaling important

USB-related events such as:

• USB Suspend and Resume – these states are

signaled on the GP2, if the pin is configured for its

dedicated function

- USB Suspend mode is entered when a

suspend signaling event is detected on the

USB bus

- USB Resume is signaled when one of the

following events is occurring:

a) Resume signaling is detected or generated

b) A USB Reset signal is detected

c)

A device Reset occurs

• USB device enumerated successfully (this state is

signaled if the GP4 is configured for its dedicated

function)

• USB Low-Power mode

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