參數(shù)資料
型號(hào)： UPD72012CU
廠商： NEC Corp.
英文描述： HUB CONTROLLER FOR UNIVERSAL SERIAL BUS
中文描述： 集線器控制器通用串行總線
文件頁(yè)數(shù)： 1/36頁(yè)
文件大?。?/td> 414K
代理商： UPD72012CU
HUB CONTROLLER FOR UNIVERSAL SERIAL BUS
DATA SHEET
MOS INTEGRATED CIRCUIT
μ
PD72012
Document No. S13918EJ3V0DS00 (3rd edition)
Date Published April 2001 NS CP(K)
Printed in Japan
The
μ
PD72012 is a dedicated LSI for a HUB connected to a universal serial bus (USB) system.
It is an upgrade of NEC’s
μ
PD72011. 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
μ
PD72012.
{
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
μ
PD72012.
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
μ
PD72012CU-XXX
μ
PD72012GB-XXX-3B4
42-pin plastic SDIP (15.24 mm (600))
44-pin plastic QFP (10
×
10)
1999
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.
The mark shows major revised points.
相關(guān)PDF資料
PDF描述
UPD72012GB HUB CONTROLLER FOR UNIVERSAL SERIAL BUS
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UPD72012GB-XXX-3B4 HUB CONTROLLER FOR UNIVERSAL SERIAL BUS
UPD72012 HUB CONTROLLER FOR UNIVERSAL SERIAL BUS
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