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UPD720012

NEC
Part Number UPD720012
Manufacturer NEC
Description HUB CONTROLLER
Published Apr 16, 2005
Detailed Description DATA SHEET MOS INTEGRATED CIRCUIT µPD72012 HUB CONTROLLER FOR UNIVERSAL SERIAL BUS The µPD72012 is a dedicated LSI for ...
Datasheet PDF File UPD720012 PDF File

UPD720012
UPD720012

Overview
DATA SHEET MOS INTEGRATED CIRCUIT µPD72012 HUB CONTROLLER FOR UNIVERSAL SERIAL BUS The µPD72012 is a dedicated LSI for a HUB connected to a universal serial bus (USB) system.
It is an upgrade of NEC’s µPD72011.
It complies with USB specification revision 1.
1.
By putting descriptors into ROM, information such as a user’s vendor ID can be implemented in the chip.
FEATURES { Compliant with Chapter 11 (HUB Specifications) of USB Specification 1.
1.
{ Descriptors into ROM • The user can customize the vendor ID and product ID by using Mask ROM option.
{ Supports 5 kinds of string descriptors (for Mask ROM code product only) { On-chip sequencer • There is an on-chip descriptor and request response sequencer.
External initial setup and control is not needed and HUB functions can be realized using only the µPD72012.
{ Downstream ports • Four or five ports can be selected using a pin function.
{ Power modes • Bus power or self-power can be selected using a pin function (an external power control circuit is required).
{ Corresponds to standard descriptor products • Two kinds of standard ROM code products are provided.
Standard and HUB class descriptors are on-chip in the µPD72012.
ROM code: 003 (individual overcurrent monitoring type Generic HUB) ROM code: 004 (collective overcurrent monitoring type Generic HUB) { Supports two kinds of clock input • 48 MHz oscillator input or a 4 MHz crystal resonator can be supported { Power control • Port power control and overcurrent detection functions are on-chip.
Individual port control or collective control can be selected for these.
ORDERING INFORMATION Part No.
Package 42-pin plastic SDIP (15.
24 mm (600)) 44-pin plastic QFP (10 × 10) µPD72012CU-XXX µPD72012GB-XXX-3B4 The information in this document is subject to change without notice.
Before using this document, please confirm that this is the latest version.
Not all devices/types available in every country.
Please check with local NEC representative for availability and additio...


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