MC141555 Datasheet, PDF (1/16 Pages) Motorola, Inc – USB Hub Controller CMOS

MOTOROLA
Freescale Semiconductor, Inc.
SEMICONDUCTOR TECHICAL DATA
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by MC141555
USB Hub Controller
MC141555
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
28 ₁
P SUFFIX
PLASTIC PACKAGE
CASE 655
ORDERING INFORMATION
MC141555P1 Plastic Dip
PIN ASSIGNMENT
VDD 1
OSC1 2
OSC2 3
VSS 4
PL 5
DP0 6
DM0 7
VDD3CAP 8
OVR1 ⁹
PWRSW1 ¹⁰
DP1 ¹¹
DM1 12
OVR2 ¹³
PWRSW2 14
28 DM5/SEL0
27 DP5/SEL1
26 PWRSW5
25 ^OVR5/GANG
24 DM4
23 DP4
22 PWRSW4
21 OVR4
20 DM3
19 DP3
18 PWRSW3
17 OVR3
16 DM2
15 DP2
General Characteristics
• 28 DIP Package
• Crystal Input 24MHz
• Internal 3.3Volt Regulator
• Single 5Volt Power Supply
• Low-power CMOS Technology
This document contains information on a new product. Specifications and information herein are subject to change without notice.
© Motorola, Inc. 1998
For More Information On This Pro^Rd^Eu_0V3c_/39.t₈₀,
Go to: www.freescale.com