18
AT43USB324
1941A–02/01
Extra Hot Keys
Address
Data
Description
39
07
Number of Bytes
3A
D0
KB Matrix Code
3B
23
First Byte Sent to Host
3C
02
Second Byte Sent to Host
3D
D1
KB Matrix Code
3E
8A
First Byte Sent to Host
3F
01
Second Byte Sent to Host
40
58
Checksum
Miscellaneous Data
Address
Data
Description
41
F0
Checksum of Mask Byte + Bytes
in Language ID + Bytes in Manuf
Bytes in Product
Bytes in Serial Bytes
in Extra Hot Keys
(BF + 04 + 0C + 12 + 08 + 07 =
F0)
42 through 6E
Don’t Cares. May be Written with
0’s
6F
2D
Checksum of Keyboard Matrix
Codes
Keyboard Matrix
Address
Data
KB Row
KB Col
Description
70
28
0
0
KB Enter
71
31
1
0
KB \
72
50
2
0
Left Arrow
73
3F
3
0
F6
74
30
4
0
]
75
3E
5
0
F5
76
2A
6
0
Backspace
77
2E
7
0
=
78
36
0
1
Comma
79
07
1
1
D
7A
06
2
1
C
7B
25
3
1
KB 8
