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UPD720012 fiches techniques PDF

NEC - HUB CONTROLLER FOR UNIVERSAL SERIAL BUS

Numéro de référence UPD720012
Description HUB CONTROLLER FOR UNIVERSAL SERIAL BUS
Fabricant NEC 
Logo NEC 





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UPD720012 fiche technique
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.
µPD72012CU-XXX
µPD72012GB-XXX-3B4
Package
42-pin plastic SDIP (15.24 mm (600))
44-pin plastic QFP (10 × 10)
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 additional information.
Document No. S13918EJ3V0DS00 (3rd edition)
Date Published April 2001 NS CP(K)
Printed in Japan
The mark shows major revised points.
1999

PagesPages 30
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