USB Hub Controller CMOS
Description
MOTOROLA
Freescale Semiconductor, Inc.
Order this document by MC141555
SEMICONDUCTOR TECHICAL DATA
Product Preview USB Hub Controller
CMOS
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/selfpowered 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 supported 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 downstream ports supports power-switching and overcurrent detection with Individual 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 management.
MC141555
28 1
P SUFFIX PLASTIC PACKAGE CASE 655
ORDERING INFORMATION
MC141555P1 Plastic Dip
Freescale Semiconductor, Inc.
.
.
PIN ASSIGNMENT
VDD OSC1 OSC2 VSS PL
1 2 3 4 5 6 7 8 9 10 11
28 27 26 25 24 23 22 21 20 19 18 17 16 15
DM5/SEL0 DP5/SEL1 PWRSW5 OVR5/GANG DM4 DP4 PWRSW4 OVR4 DM3 DP3 PWRSW3 OVR3 DM2 DP2
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 Dete...
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