Product Summary

The GL850A is a low-power HUB controller. It embeds an 8-bit RISC processor to manipulate the control/status registers and respond to the requests from USB host. Firmware of GL850A 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. Default settings in the internal mask ROM is responded to the host without having external EEROM. The GL850A is designed for customers with much flexibility. The more complicated settings such as PID, VID, and number of downstream ports settings are easily achieved by programming the external EEPROM (Ref. to Chapter 5).

Parametrics

GL850A absolute maximum ratings: (1)power supply: -0.5 to 3.6V; (2)input voltage for digital I/O pins: -0.5 to 3.6V; (3)input voltage for digital I/O ovcur pins: -0.5 to 5.25V; (4)input voltage for USB signal pins: -0.5 to 3.6V; (5)storage temperature under bias: -60 to 100℃; (6)frequency: 12MHz ±0.05%.

Features

GL850A features: (1)4 downstream ports; (2)Upstream port supports both high-speed (HS) and full-speed (FS) traffic; (3)Downstream ports support HS, FS, and low-speed (LS) traffic; (4)1 control pipe (endpoint 0, 64-byte data payload) and 1 interrupt pipe (endpoint 1, 1-byte data payload); (5)Backward compatible to USB specification Revision 1.1; (6)On-chip 8-bit micro-processor; (7)RISC-like architecture; (8)USB optimized instruction set; (9)Dual cycle instruction execution; (10)Performance: 6 MIPS @ 12MHz; (11)With 64-byte RAM and 2K internal ROM.

Diagrams

GL850A pin configuration

Image Part No Mfg Description Data Sheet Download Pricing
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GL850A
GL850A
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Image Part No Mfg Description Data Sheet Download Pricing
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GL850
GL850
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GL850A
GL850A
Other

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GL850G
GL850G
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GL852
GL852
Other

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