Position: Home > DataSheet > Index G > GL8 Series > GL850, GL850-15A, GL850-16

Low Cost Custom Prototype PCB Manufacturer

GL850, GL850-15A, GL850-16

Table of contents:
Info of GL850
Info of GL850-15A
Info of GL850-16

GL850, GL850-15A, GL850-16 Selling Leads, Datasheet

MFG:Genesys Package Cooled:TQFP64(1010) D/C:08.09+

GL850, GL850-15A, GL850-16 Datasheet download

Five Points

Part Number: GL850

MFG: Genesys

Package Cooled: TQFP64(1010)

D/C: 08.09+

Attentive hint

Want to post a buying lead? If you are not a member yet, please select the specific/related part number first and then fill the quantity and your contact details in the "Request for Quotation Form" on the left, and then click "Send RFQ".Your buying lead can then be posted, and the reliable suppliers will quote via our online message system or other channels soon.

How to buy ?

How long will receive a response.

Top Sellers:

TOP

GL850 General Description

GL850 is a 4-port standard Universal Serial Bus (USB) hub controller complies with Universal Serial Bus Specification Revision 2.0. GL850 can be connected to an USB1.1 host/hub or an USB2.0 host/hub. When GL850 is connected to an USB1.1 host/hub, it works just like an USB1.1 hub; the upstream port will operate in full-speed (FS) and the downstream port can operate in full-speed or low-speed (LS). When GL850 is connected to an USB2.0 host/hub, it works as an USB2.0 hub; the upstream port will operate in high-speed (HS) and the downstream port can operate in high-speed, full-speed, or low-speed. The bandwidths of high speed, full speed, and low speed are 480 Mbps, 12 Mbps, and 1.5 Mbps respectively.

GL850 embeds an 8-bit RISC processor to manipulate the control/status registers and responds to the requests from USB host. Firmware of GL850 will control its general purpose I/O (GPIO) to access the external EEPROM and then respond to the host the customized PID and VID configured in the external EEPROM.

GL850 responds to the host the default settings in the internal ROM if there exists no external EEPROM. GL850 is designed for customers with much flexibility. Customers can easily design GL850 as 4-port self/bus powered, individual/ganged mode, by setting the I/O pins of GL850 (Ref. to Chapter 5). The more complicated settings such as PID, VID, and number of downstream ports settings are easily achieved by programming the external EEPROM.TT (transaction translator) is the main traffic control engine in an USB2.0 hub to handle the unbalanced traffic speed between the upstream port and the downstream ports. GL850 adopts single TT architecture, which shares the same TT buffer for all downstream devices.

Each downstream port of GL850 supports two-color (green/amber) status LEDs to indicate normal/abnormal status. The downstream ports of GL850 can be configured as individual mode or gang mode (4 ports as a group) for power management. Gang mode is very helpful for cost consideration, since we can use one poly-fuse, but not expensive power switch chips, to detect over current.

GL850 passes the current requirement (< 2.5mA) for bus-power mode when being suspended. The current consumption is smaller than 100mA for the GL850 silicon itself. The above requirements are necessary for a 4-port bus power hub. Under adequate PCB designing, GL850 provide a good choice for customers as a 4-port bus powered hub. Besides, GL850 can switch automatically between self-power mode and bus-power mode without re-plugging into the PC host. The slew rate control circuits and the power fail detection circuits inside
this chip give better ESD and EMI abilities to GL850.

GL850 is designed mainly for stand-alone hub. It can also be integrated into PC motherboard or any other compound devices to support USB hub function.

GL850 Maximum Ratings

Symbol	Parameter	Min.	Max.	Unit
V_CC	Power Supply	-0.5	+3.6	V
V_IN	Input Voltage	-0.5	5	V
V_OUT	Output Voltage	-0.5	+3.6	V
T_A	Ambient Temperature under bias	60	+100
F_OSC	Frequency	12 MHz ± 100ppm

GL850 Features

• 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 payload)
− 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 effective solution for TT
• 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

GL850 Typical Application

·Stand-alone USB hub
· PC motherboard USB hub, Ducking of notebook
· Any compound device to support USB HUB function

GL850 Connection Diagram

Hotspot Suppliers Product

Product List A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9

MT58L64L18CT-10

Price: 4-6 USD

MT58L64L18CT-10 TQFP100
DL-7140-211M

Price: 5-6.5 USD

DL-7140-211M laser tube
74LVC74APG

Price: 4-5 USD

74LVC74APG - IC FLIP FLOP D-Type POS-EDG DUAL 14TSSOP
CY28346ZI-2

Price: 6.5-8 USD

CYPRESS - Clock Synthesizer with Differential CPU Outputs
PI5V330QEX

Price: 0.284-0.286 USD

PI5V330QEX Pericom Multiplexer Switch ICs
BSM300GA120DN2

Price: 1-2 USD

IGBT power module, Single switch, 1200 V, Collector-emitter voltage, 430A
SVA150XG04TB

Price: 1-2 USD

a-Si TFT-LCD, NEC, 228.096Hmm, 560V
PC354N1

Price: 0.124-0.2 USD

PC354N1T - Mini-flat Package, AC Input Type Photocoupler - Sharp Electrionic Components
RL1210JR-070R22L

Price: 0.177-0.178 USD

RL1210JR51-XX-BL - Thick Film Chip Resistor Low Ohmic - TAITRON Components Incorporated
STPS140A

Price: 0.053-0.055 USD

STPS140A - POWER SCHOTTKY RECTIFIER - STMicroelectronics
STA013

Price: 1.45-1.5 USD

STA013 - MPEG 2.5 LAYER III AUDIO DECODER - STMicroelectronics
SMBJ5347B

Price: 0.073-0.075 USD

SMBJ5347B - 5 Watt Surface Mount Silicon Zener Diodes - Micro Commercial Components