SK-FR80-120PMC-USB Fujitsu, SK-FR80-120PMC-USB Datasheet - Page 54
SK-FR80-120PMC-USB
Manufacturer Part Number
SK-FR80-120PMC-USB
Description
BOARD, EVAL, FOR MB91660 SERIES
Manufacturer
Fujitsu
Type
Evaluation Boardr
Datasheet
1.SK-FR80-120PMC-USB.pdf
(146 pages)
Specifications of SK-FR80-120PMC-USB
Kit Features
External FRAM Memory MB85RS256, USB A & USB A Connectors, USB To Serial Converter
Mcu Supported Families
MB91660
Silicon Manufacturer
Fujitsu
Core Architecture
FR80
Kit Contents
Board, USB A To Mini-B Cable
Features
USB Connector, 7-segment LED, Humidity Sensor
Rohs Compliant
No
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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hosting function called USB Mini-Host.
4.3
<Host>
<Hub>
keyboards are equipped with USB hubs.
<Function>
functions are directly connected to the host via a hub for communicating on a 1:1 basis.
The host and function are connected in a so-called star topology, which means simply that
Today, printers and digital cameras are also equipped with USB, not just the PC.
These devices can transfer data between themselves without going through a host PC using a
The MB91F662 installed on this board is equipped with the Mini-Host function.
3. Signal lines
USB cables are inexpensive to make, using only two signal lines and two power lines.
The two signal lines carry 3.3 V differential signals (D+ and D-). The two power lines are
labeled Vbus (5V), and GND. Connected devices can draw up to 500 mA of power, allowing
manufacturers to develop devices that do not require external power supplies.
(This board can supply power from the USB.)
Plug types are discussed in Section 4.4.
The three functions explained here form a USB system.
PCs are equipped with the host function as shown in Figure 4.3-1.
The number of devices (or functions), including the hub, that can be connected to a single host
is 127. (The hub is treated as a function.)
The hub is used mainly to increase the number of ports. With PCs, some monitors and
Functions are provided on the peripheral. In a PC, the keyboard and mouse are functions.
Connection formats
53
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