參數(shù)資料
型號(hào): M30240S9-XXXFP
廠商: Mitsubishi Electric Corporation
英文描述: 16 Characters x 2 Lines, 5x7 Dot Matrix Character and Cursor
中文描述: 單片16位CMOS微機(jī)
文件頁數(shù): 44/142頁
文件大?。?/td> 1637K
代理商: M30240S9-XXXFP
1-44
Mitsubishi microcomputers
M30240 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Preliminary Specifications REV. E
Specifications in this manual are tentative and subject to change
Universal Serial Bus
2.18 Universal Serial Bus
The Universal Serial Bus (USB) has the following features:
Complete USB Specification (version 1.1) Compatibility
Error-handling capabilities
FIFOs:
Endpoint 0:
Endpoint 1:
Endpoint 2:
Endpoint 3:
Endpoint 4:
IN/OUT 32-byte
IN 128-byte
IN 32-byte
IN 32-byte
IN 32-byte
OUT 128-byte
OUT 32-byte
OUT 32-byte
OUT 32-byte
Nine endpoints - control endpoint (Endpoint 0 - bi-directional) plus four IN and four OUT
endpoints
Complete device configuration
Support of all device commands
Supports of full-speed functions
Support of all USB transfer types:
Isochronous
Bulk
Control
Interrupt
Suspend/Resume operation
On-chip USB transceiver with voltage converter
Start-of-frame interrupt and output pin
2.18.1 USB Function Control Unit (USB FCU)
The implementation of the USB by this device is accomplished chiefly through the device’s USB
Function Control Unit (See Figure 1.29). The Function Control Unit’s overall purpose is to handle the
USB packet protocol layer. The Function Control Unit notifies the MCU that a valid token has been
received. When this occurs, the data portion of the token is routed to the appropriate FIFO. The MCU
transfers the data to, or from, the host by interacting with that endpoint’s FIFO and CSR register.
The USB Function Control Unit is composed of five sections:
Serial Interface Engine (SIE)
Generic Function Interface (GFI)
Serial Engine Interface Unit (SIU)
Microcontroller Interface (MCI)
USB Transceiver
2.18.1.1 Serial Interface Engine
The SIE interfaces to the USB serial data and handles deserialization/serialization of data, NRZI encoding
decoding, clock extraction, CRC generation and checking, bit stuffing, and other items pertaining to the USB
protocol such as handling inter-packet time-outs and packet ID (PID) decoding.
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