gl850 ETC-unknow, gl850 Datasheet - Page 22

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

5.2.4 LED Connections
5.2.5 EEPROM Setting
00
08
10
18
20
28
30
38
40
48
Note: 1. VID_H/VID_L: high/low byte of VID value
©2000-2003 Genesys Logic Inc.—All rights reserved.
GL850 controls the LED lighting according to the flow defined in section 11.5.3 of Universal Serial Bus
Specification Revision2.0. Both manual mode and Automatic mode are supported in GL850. When GL850
is globally suspended, GL850 will turn off the LED to save power.
GL850 replies to host commands by the default settings in the internal ROM. GL850 also offers the ability
to reply to the host according to the settings in the external EEPROM(93C46). The following table shows
the configuration of 93C46.
PRODUCT
NUMBER
VENDOR
LENGTH
LENGTH
LENGTH
SERIAL
VID_H
XX
XX
XX
XX
XX
XX
2. PID_H/PID_L: high/low byte of PID value
3. CHKSUM: CHKSUM must equal to VID_H + VID_L + PID_H + PID_L + 1,otherwise
firmware will ignore the EEPROM settings.
00h
AMBER/GREEN
VID_L PID_H PID_L CHKSUM FF PORT_NO
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
Inside GL850
01h
XX
XX
XX
XX
XX
XX
XX
XX
XX
Table 5.1 - 93C46 Configuration
Figure 5.8 - LED Connection
XX
XX
XX
XX
XX
XX
XX
XX
XX
02h
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
GL850 USB 2.0 4-Port HUB Controller
03h
REMOVABLE
On PCB
DEVICE
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX XX XX XX XX XX XX XX
XX XX XX XX XX XX XX XX
XX XX XX XX XX XX XX XX
XX XX XX XX XX XX XX XX
XX XX XX XX XX XX XX XX
XX XX XX XX XX XX XX XX
XX XX XX XX XX XX XX XX
XX XX XX XX XX XX XX XX
XX XX XX XX XX XX XX XX
FF FF FF FF FF FF FF FF
04h
LED
DGND
05h
06h
Page 22
07h