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參數(shù)資料
| 型號： | GL651USB |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 2-PORT USB KEYBOARD HUB CONTROLLER |
| 中文描述： | 2端口USB鍵盤的集線器控制器 |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 156K |
| 代理商： | GL651USB |
3 03/06/00
GL651USB USB KEYBOARD HUB CONTROLLER
Version 1.0
2
The GL651USB is an USB keyboard hub with 1 upstream port and 2 downstream ports.
It integrates USB keyboard and hub in a single chip to add extra value to traditional
keyboard and lower its total cost. The GL651USB uses an 8-bit RISC-like uC to
encode/decode the host commands and to decode the keyboard matrix data. Its 8 general-
purpose I/O(GPIO) pins and the uC-based structure make the implementation of
customization very easy. The GL651USB supports 20 drive pins to meet the diversity of
keyboard matrix. Besides, 5 GPIO pins support the LED driving, 3 for keyboard and 2
for hub. Hence vendors can decide whether or not to enable the hub LED function easily.
For giving more design flexibility, the power supply of GL651USB can be switched
automatically: self-power or bus-power. In the same way, vendors can pullup/pulldown
the SELF pin to support only self/bus power if they have cost issue. The GL651USB can
be configured as ganged/individual mode for hub functions by strapping through
pullup/pulldown the SUSPND pin. To prevent from abnormal current consumption of
downstream port devices, the GL651USB supplies power enable flags by reading the
over-current flags. By hub LED, The GL651USB also supports smart traffic indication,
i.e., the higher data traffic flows through one port, the higher frequency of that port’s
LED blinks. In order to minimize the power consumption, the GL651USB will turn LED
off and stop the clock automatically when it is suspended.
The GL651USB is the most featured and flexible product for those venders who are
looking for “USB Keyboard with Hub” solution. Besides, vendors can easily modify their
board circuits to meet their own requirement if they have product differentiation or cost
issues. Further more, if vendor has the requirement of saving their package cost, COB
component also can be supplied by request.
FUNCTION OVERVIEW
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相關代理商/技術參數(shù) |
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|---|---|
| GL652 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:USB 7 PORT HUB CONTROLLER |
| GL-6521 | 制造商:Pro Elec 功能描述:3W CREE® Head Lamp |
| GL652USB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:USB 7 PORT HUB CONTROLLER |
| GL6551 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:COMPANDER |
| GL6552 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:Low Voltage Compander |
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