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參數(shù)資料
| 型號： | UPD72012GB-004-3B4 |
| 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 |
| 文件頁數(shù)： | 1/36頁 |
| 文件大?。?/td> | 414K |
| 代理商： | UPD72012GB-004-3B4 |
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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.
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