gl850 ETC-unknow, gl850 Datasheet - Page 10

• Manufacturer Part Number: gl850
• Description: Usb 2.0 4-port Hub Controller
• Manufacturer: ETC-unknow

CHAPTER 2 FEATURES
N
N
N
N
N
N
N
N
N
N
N
N
N
©2000-2003 Genesys Logic Inc.—All rights reserved.
N
N
Compliant to USB specification Revision 2.0
 4 downstream ports
 Upstream port supports both high-speed (HS) and full-speed (FS) traffic
 Downstream ports support HS, FS, and low-speed (LS) traffic
 1 control pipe (endpoint 0, 64-byte data payload) and 1 interrupt pipe (endpoint 1, 1-byte data
 Backward compatible to USB specification Revision 1.1
On-chip 8-bit micro-processor
 RISC-like architecture
 USB optimized instruction set
 Dual cycle instruction execution
 Performance: 6 MIPS @ 12MHz
 With 64-byte RAM and 2K internal ROM
 Support customized PID, VID by reading external EEPROM
 Support downstream port configuration by reading external EEPROM
Single Transaction Translator (TT) architecture
 Single TT shares the same TT control logics for all downstream port devices. This is the most cost
Each downstream port supports two-color status indicator, with automatic and manual modes compliant to
USB specification Revision 2.0
Support both individual and gang modes of power management and over-current detection for
downstream ports
Conform to bus power requirements
Automatic switching between self-powered and bus-powered modes
Integrated USB2.0 transceiver
0.35um CMOS technology
PLL embedded with external 12 MHz crystal
Operate on 3.3 Volts
Improved output drivers with slew-rate control for EMI reduction
Internal power-fail detection for ESD recovery
64-pin LQFP package
Applications:
 Stand-alone USB hub
 PC motherboard USB hub, Ducking of notebook
 Any compound device to support USB HUB function
payload)
effective solution for TT
GL850 USB 2.0 4-Port HUB Controller
Page 10