AT43301_05 ATMEL [ATMEL Corporation], AT43301_05 Datasheet - Page 2

• Manufacturer Part Number: AT43301_05
• Description: Low-cost USB Hub Controller
• Manufacturer: ATMEL [ATMEL Corporation]

1.1
2
Block Diagram
AT43301
The AT43301 consists of a Serial Interface Engine, a Hub Repeater, and a Hub Controller.
The Serial Interface Engine’s tasks are:
The Hub Repeater is responsible for:
The Hub Controller is responsible for:
Figure 1-2.
Note:
• Manage the USB communication protocol
• USB signaling detection/generation
• Clock/data separation, data encoding/decoding, CRC generation/checking
• Data serialization/deserialization
• Providing upstream connectivity between the selected device and the host
• Managing connectivity setup and tear-down
• Handling bus fault detection and recovery
• Detecting connect/disconnect on each port
• Hub enumeration
• Providing configuration information to the Host
• Providing status of each port to the Host
• Controlling each port per host command
• Managing port power supply
This document assumes that the reader is familiar with the Universal Serial Bus and therefore only
describes the unique features of the AT43301 controller. For detailed information about the USB
and its operation, the reader should refer to the Universal Serial Bus Specification Version 1.1,
September 23, 1998.
AT43301 Block Diagram
CONTROLLER
ENDPOINT 0
ENDPOINT 1
HUB
PORT 1
INTERFACE
SERIAL
ENGINE
TO DOWNSTREAM DEVICES
PORT 2
UPSTREAM PORT
REPEATER
PORT 0
HUB
PORT 3
PORT 4
1137J–USB–01/06