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MC141555 bảng dữ liệu(PDF) 1 Page - Motorola, Inc |
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MC141555 bảng dữ liệu(HTML) 1 Page - Motorola, Inc |
1 / 16 page MOTOROLA SEMICONDUCTOR TECHICAL DATA REV 3.0 03/98 © Motorola, Inc. 1998 Order this document by MC141555 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/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 28 1 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 DP5/SEL1 DM5/SEL0 OVR5/GANG PIN ASSIGNMENT This document contains information on a new product. Specifications and information herein are subject to change without notice. Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
Số phần tương tự - MC141555 |
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Mô tả tương tự - MC141555 |
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