
SYSTEMARCHITECTURE AND REFERENCE DESIGN
12
HiByte : Xfer end address + 1
LoByte : Pointer to string descriptor (index 1) 100h ROM
address
HiByte : Xfer end address + 1
LoByte : Pointer to string descriptor (index 2) 100h ROM
address
HiByte : Xfer end address + 1
LoByte : Pointer to string descriptor (index 3) 100h ROM
address
HiByte : Xfer end address + 1
RESERVED
Config Desc. 1 interface, bus powered, remote wakeup, 50 mA
Total bytes returned : 0x19
RESERVED
Hub interface descriptor, interface 0. Class code 0x9
RESERVED
Hub endpoint descriptor
Keybrd Config Desc. 2 interfaces, bus powered, remote wakeup, 50
mA
Total bytes returned : 0x3B
Keyboard interface descriptor, interface 0. Class code 0x3.Boot
subclass
Keyboard HID 1.1 descriptor, Country code=00 ANSI
Keyboard endpoint descriptor
Added Key interface descriptor, interface 1. Class code 0x3. No
subclass
Added Key HID 1.1 descriptor, Country code=00 ANSI
Added Key endpoint descriptor
Keyboard report descriptor
16
4C,52
18
52,6A
1A
6A,82
1C
09,02,19,00,01,01,00,A0,19
25
09,04,00,00,01,09,00,00,00
2E
07,05,81,03,01,00,FF
35
09,02,3B,00,02,01,00,A0,19
3E
09,04,00,00,01,03,01,01,00
47
50
57
09,21,10,01,00,01,22,41,00
07,05,81,03,08,00,0A
09,04,01,00,01,03,00,00,00
60
69
70
09,21,10,01,00,01,22,6A,00
07,05,82,03,04,00,FF
05,01,09,06,A1,01,05,07,
19,E0,29,E7,15,00,25,01,
75,01,95,08,81,02,95,01,
75,08,81,01,95,05,75,01,
05,08,19,01,29,05,91,02,
95,01,75,03,91,01,95,06,
75,08,15,00,26,FF,00,05,
07,19,00,2A,FF,00,81,00,
C0
12,01,10,01,09,00,00,08,
8F,05,40,94,22,01,01,02,
00,01
B1
RESERVED
Hub device descriptor
,
USB version 1. 1, VID,PID
Device version 1.22
12 Descriptor length
01 Device Descriptor
10 01 USB Version 1.1
09 Hub class
00 Sub-class
00 Device Protocol
08 Maximum packet size
VV VV Vender ID –
Alcor Hub Vender ID
PP PP Product ID -
Alcor Hub Product ID
22 01 Device release number
01 Index of Manufacturer string descriptor
02 Index of Product string descriptor
00 Index of serial number string descriptor – no serial number
01 Number of configuration
RESERVED
C3
09,29,03,04,00,16,32,02,FF