GL651USB View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

GL651USB

2-PORT USB KEYBOARD HUB CONTROLLER

Unspecified 

GL651USB USB KEYBOARD HUB CONTROLLER

1 FEATURES

• High performance and low-cost solution for USB keyboard with hub solution

• USB Specification Compliance

− Conforms to USB specification Rev. 1.1

− Conforms to HID Class specification Rev. 1.0

− Supports 1 device address for hub, 1 device address for keyboard

− Supports 2 endpoints of hub, 3 endpoints for keyboard

• 8-bit micro-processor

− RISC-like architecture

− USB optimized instruction set

− Single cycle instruction execution

− Operation Speed: DC to 24 MHz clock input

− Performance: 12 MIPS @ 24MHz

• I/O ports

− Up to 20 output pins for key matrix drive pin

− Up to 8 input pins for key matrix sense pin

− Up to 5 I/O pins with LED drive capability : 3 for keyboard, 2 for hub

− Up to 8 general purpose I/O pins for customization

• Internal memory

− 80 bytes of RAM

− 3.25K × 14 of program ROM

− larger size of ROM makes it possible for customization

• On-chip 3.3v output

− No external regulator required

• Integrated USB transceiver

• 12 MHz external clock

• Improved output drivers with slew-rate control to reduce EMI

• Internal power-on reset(POR)

• Internal power-fail detector for ESD recovery

• Support suspend/normal mode power management

• Remote wakeup is supported for both keyboard and hub

• Support power management for downstream port devices

• Automatic switching between self/bus powered mode

• Smart LED traffic indicator

− The higher data traffic flows through the hub downstream port, the higher

frequency that port’s LED will blink.

• 100 pin LQFP package for demo, COB structure is supported

2

03/06/00

Version 1.0

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