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參數資料
| 型號： | MC141555P1 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 總線控制器 |
| 英文描述： | USB Hub Controller CMOS |
| 中文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PDIP28 |
| 封裝： | PLASTIC, DIP-28 |
| 文件頁數： | 1/16頁 |
| 文件大?。?/td> | 280K |
| 代理商： | MC141555P1 |
MOTOROLA
SEMICONDUCTOR TECHICAL DATA
Product Preview
USB Hub Controller
CMOS
Motorola, Inc. 1998
Order this document
by MC141555
This device is a self-contained USB Hub which complies with USB Hub
Specification Rev 1.0. This device is used to expand the USB ports of your PC
system while needed. Because of its self-contained and bus-powered/self-
powered capability, it can hide the complexity from the user and be flexibly
placed anywhere, such as monitor, keyboard, motherboard, Hub-box, etc. The
MC141555 consists of Serial Interface Engine (SIE), Hub Repeater, and Hub
Controller, supporting one upstream port and up to five downstream ports.
Both Low Speed Mode (1.5Mbps) and Full Speed Mode (12Mbps) are sup-
ported by automatically detecting which data line (D+ or D-) is pulled high
whenever downstream devices are connected to the bus or at power-up.
MC141555 Hub can be Self Powered or Bus Powered. When self-powered,
MC141555 is powered by an external 5 volt supply and capable of deliver
500mA current to each downstream port. Power management for all down-
stream ports supports power-switching and overcurrent detection with Individ-
ual or Ganged control; a self-powered MC141555 supports Individual control
only, but bus-powered MC141555 supports either Individual or Ganged control.
When Ganged control, PWRSW1 and OVR1 are dedicated for power manage-
ment.
Features Highlight
Hub
Self-contained Hub Includes Serial Interface Engine (SIE), Hub Repeater
and Hub Controller
Universal Serial Bus (USB) Version 1.0 Compliant
Self-powered or Bus-powered
Individual/Ganged Downstream Port Power Switching
Individual/Ganged Downstream Port Overcurrent Detection
All Downstream Ports Support Full Speed and Low Speed Operation
Suspend and Resume Operations
Host Reset Operation
General Characteristics
28 DIP Package
Crystal Input 24MHz
Internal 3.3Volt Regulator
Single 5Volt Power Supply
Low-power CMOS Technology
MC141555
P SUFFIX
PLASTIC PACKAGE
CASE 655
ORDERING INFORMATION
MC141555P1
Plastic Dip
281
VDD
OSC1
OSC2
PL
OVR1
VDD3CAP
PWRSW4
DM4
PWRSW3
DM3
PWRSW1
DM2
VSS
OVR2
OVR3
OVR4
PWRSW2
DP2
DM1
DP3
DP4
DM0
DP0
DP1
2
3
4
5
6
7
8
9
10
11
25
26
17
18
19
20
21
22
23
24
1
12
27
28
13
15
16
14
PWRSW5
OVR5/GANG
DP5/SEL1
DM5/SEL0
PIN ASSIGNMENT
This document contains information on a new product. Specifications and information herein are subject to change without notice.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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