GL852 USB 2.0 MTT HUB Controller
Table 5.1 - 93C46 Configuration
Unit: Byte
00
01
02
03
04
05
06
07
08
09 0A 0B 0C 0D 0E 0F
DEVICE
REMOVABLE
PORT
NUMBER
CHKSUM
VID_L
VID_H PID_L PID_H
FF
MaxPower FF FF FF FF FF FF FF
00h
VENDOR
LENGTH
ꢀ
start
10h
Vendor string (ASC II code)
Product String(ASC II code)
20h
30h
40h
50h
60h
end
PRODUCT
LENGTH
ꢀ
ꢀ
start
start
end
SERIAL
NUMBER
LENGTH
Serial Number String(ASC II code)
70h
end
Note: 1. VID_H/VID_L: high/low byte of VID value
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.
4. PORT_NO: port number, value must be 1~4.
5. MaxPower : Describe the maximum power consumption, range=0Ma~500Ma .
Value -> 00H~FAH (unit = 2Ma)
6. DEVICE REMOVALBE:
PORT4
REMOVABLE
PORT3
REMOVABLE
PORT2
REMOVABLE
PORT1
REMOVABLE
-
-
-
-
0: Device attached to this port is removable.
1: Device attached to this port is non-removable.
7. VENDOR LENGTH: offset 10h contains the length of the vendor string. Values of vendor string is
contained from 11h~3Fh.
8. PRODUCT LENGTH: offset 40h contains the length of product string. Values of product string is
contained from 41h~6Fh.
9. SERIAL NUMBER LENGTH: offset 70h contains the value of serial number string. Values of serial
number string is contained after offset 71h.
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