參數(shù)資料
型號: MC68HC05JB3JDW
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PDSO28
封裝: SOIC-28
文件頁數(shù): 117/148頁
文件大小: 1600K
代理商: MC68HC05JB3JDW
GENERAL RELEASE SPECIFICATION
November 5, 1998
MOTOROLA
UNIVERSAL SERIAL BUS MODULE
MC68HC05JB3
10-2
REV 1
10.2
OVERVIEW
This section provides an overview of the Universal Serial Bus (USB) module in the
MC68HC05JB3. This USB module is designed to serve as a low-speed (LS) USB
device per the Universal Serial Bus Specication Rev 1.0. Three types of USB
data transfers are supported: control, interrupt, and bulk (transmit only).
Endpoint 0 functions as a receive/transmit control endpoint. Endpoints 1 and 2
can function as interrupt or bulk, but only in the transmit direction.
A block diagram of the USB module is shown Figure 10-1. The USB module
manages communications between the host and the USB function. The module is
partitioned into four functional blocks. These blocks consist of a 3.3 volt regulator,
a dual function transceiver, the USB control logic, and the endpoint registers. The
blocks are further detailed in Section 10.4.
Figure 10-1. USB Block Diagram
D+
D–
USB
CONTR
OL
LOGIC
T
R
ANSCEIV
ER
RCV
VPIN
VMIN
VPOUT
VMOUT
REGULATOR
3.3V OUT
CPU BUS
USB REGISTERS
USB
Upstream
Port
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