GL3590 datasheet(36/47 Pages) GENESYS

36 / 47 page

GL3590 Datasheet

Page 36

GLI Confidential

AMBER/GREEN

Inside GL3590

On PCB

DGND

LED

Figure 4.10 - LED Connection

4.4.5 Power Switch Enable Polarity

Both low/high-active power switches are supported by firmware configuration.

4.4.6 Port Configuration

Each specific downstream port can be disabled individually by firmware, SMBus or vendor command, which

extends the flexibility for PCB design and fits more applications.

In GL3590-S series of Hub, multiple upstream ports are also allowed for special applications. For further

usage information, please contact Genesys FAE or sales team.

4.4.7 Non-removable Port Setting

For compound applications or embedded systems, downstream ports that always connect inside the system

can be set as non-removable by firmware configuration, EEPROM, and pin strapping. Please refer to

Genesys USB3.1 Hub FW ISP Tool User Guide for the detailed setting information.

4.4.8 SMBUS Mode (SMBUS Slave Address=0x25)

GL3590 enters SMBUS mode since Power-On occurs, and RESET# pin is asserted as well. After that,

GL3590 will define OVCUR3J as SMC and OVCUR4J as SMD. GL3590 will exit the SMBUS mode since

the RESET# pin is de-asserted. The more complicated settings such as PID, VID, power saving, port number,

port non/removable, and downstream port electrical tuning can be configured by SMBUS.

Figure 4.11 - SMBus Timing Diagram

GL3590 Datasheet(PDF) 36 Page - GENESYS LOGIC