STV0681
STV0681 Hardware Interfaces
4.3
USB interface
STV0681 includes a USB Version 1.1 compliant Universal Serial Bus Interface, including a
transceiver. This allows direct connection from STV0681 to a USB connector with minimal
additional hardware (that is a small number of passive discretes) - see Chapter 7
The USB interface interfaces the STV0681 to the USB at full speed 12MHz data rate. Some of the
features are:
● Compliant with USB protocol revision 1.1.
● USB protocol handling.
● USB device state handling.
● Clock and data recovery from USB.
● Bit stripping and bit stuffing functions.
● CRC5 checking, CRC16 generation and checking.
● Serial to parallel conversion.
● Single bulk-end point.
USB drivers are supplied by ST. For USB timing information, please refer to the USB specification
V1.1.
ADCS 7283313C
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STMICROELECTRONICS [ ST ]
