Bit
Bit
Number
Mnemonic Description
Device Connection Interrupt Enable
0
DCONNE
Set this bit to enable the DCONNI interrupt.
Clear this bit to disable the DCONNI interrupt.
Reset Value = 0000 0000b
Table 135. UHADDR Register
UHADDR (1.DBh) – USB Host Address Register
7
6
5
4
3
2
1
0
-
HADDR6
HADDR5
HADDR4
HADDR3
HADDR2
HADDR1
HADDR0
Bit
Bit
Number
Mnemonic Description
Reserved
7
-
The value read from this bit is always 0. Do not set this bit.
USB Host Address
6-0
HADDR6:0
These bits contains the address of the USB Device.
Reset Value = 0000 0000b
Table 136. UHFNUMH Register
UHFNUMH (1.DCh) – USB Host Frame Number High Register
7
6
5
4
3
2
1
0
-
-
-
-
-
FNUM10
FNUM9
FNUM8
Bit
Bit
Number
Mnemonic Description
Reserved
7-4
3-0
-
The value read from these bits is always 0. Do not set these bits.
Frame Number
FNUM10:8
The value contained in tis register is the current SOF number.
This value can be modified by software.
Reset Value = 0000 0000b
138
AT85C51SND3Bx
7632A–MP3–03/06
ATMEL [ ATMEL ]
