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参数资料
| 型号： | MC141556P |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 总线控制器 |
| 英文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PDIP28 |
| 封装： | PLASTIC, DIP-28 |
| 文件页数： | 1/18页 |
| 文件大小： | 2290K |
| 代理商： | MC141556P |
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USB Hub Controller
CMOS
This device is a self-contained USB Hub which complies with USB Hub spec
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 capabil-
ity, it can hide the complexity from the user and be flexibly placed anywhere,
such as monitor, keyboard, motherboard, hub-box, etc. The MC141556 con-
sists of Serial Interface Engine(SIE), Hub Repeater, and Hub Controller, sup-
porting one upstream port and up to five downstream ports. It also provides
optional IIC(M_BUS) programmable Vendor ID and Product ID.
Both Low speed mode (1.5 Mbps) and Full speed mode (12 Mbps) 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.
MC141556 can be self-powered or bus-powered. When self-powered,
MC141556 is powered by external 5 volt supply and capable of delivering
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 MC141556 supports Individual control
only, but bus-powered MC141556 supports either Individual or Ganged control.
When Ganged control, PWRSW1 and OVR1 are dedicated for power manage-
ment.
IIC(M_BUS) interface is provided to set up customized Vendor ID, Product
ID, Power Mode, Power Management Mode, Number of Downstream Ports
and Overcurrent Debounce Setting.
Features Highlight
Hub
Self-contained Hub Includes Serial Interface Engine (SIE), Hub Repeater
and Hub Controller
Universal Serial Bus (USB) Hub Version 1.0 Compliant
One Upstream Port and Up To Five Downstream Ports
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
IIC (M_BUS) interface
General Characteristics
28 DIP Package
Crystal Input 24MHz
Internal 3.3Volt Regulator
Single 5Volt Power Supply
Low-power CMOS Technology
MC141556
P SUFFIX
PLASTIC PACKAGE
CASE 655
ORDERING INFORMATION
MC141556P
Plastic Dip
28 1
VDD
OSC1
OSC2
IICEN
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/SDA
DP5/SEL1
DM5/SEL0
OVR5/GANG/SCL
PIN ASSIGNMENT
This document contains information on a new product. Specifications and information herein are subject to change without notice.
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RoHS-compliant and/or Pb- free versions of Freescale products have the functionality
and electrical characteristics of their non-RoHS-compliant and/or non-Pb- free
counterparts. For further information, see http://www.freescale.com or contact your
Freescale sales representative.
For information on Freescale.s Environmental Products program, go to
http://www.freescale.com/epp.
Freescale Semiconductor
Freescale Semiconductor, Inc., 2004. All rights reserved.
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