Rainbow Electronics AT89C5122 - Manual (Page 119)

119
AT8xC5122/23
4202E–SCR–06/06
Reset Value = 0001 0000b
Reset Value = 1000 0000b
Table 66. USB Global Interrupt Enable Register - USBIEN (S:BEh)
7 6 5 4 3 2 1 0
- - EWUPCPU EEORINT ESOFINT - - ESPINT
Bit Number
Bit
Mnemonic Description
7 - 6 -
Reserved
The value read from these bits is always 0. Do not change these bits.
5 EWUPCPU
Enable Wake-up CPU Interrupt
Set this bit to enable Wake-up CPU Interrupt.
Clear this bit to disable Wake-up CPU Interrupt.
4 EEORINT
Enable End of Reset Interrupt
Set this bit to enable End of Reset Interrupt. This bit is set after reset.
Clear this bit to disable End of Reset Interrupt.
3 ESOFINT
Enable SOF Interrupt
Set this bit to enable SOF Interrupt.
Clear this bit to disable SOF Interrupt.
2-1 -
Reserved
The value read from these bits is always 0. Do not change these bits.
0 ESPINT
Enable Suspend Interrupt
Set this bit to enable Suspend Interrupts (See Table 65 on page 118).
Clear this bit to disable Suspend Interrupts.
Table 67. USB Address Register - USBADDR (S:C6h)
7 6 5 4 3 2 1 0
FEN UADD6 UADD5 UADD4 UADD3 UADD2 UADD1 UADD0
Bit
Number
Bit
Mnemonic Description
7 FEN
Function Enable
Set this bit to enable the function. FADD is reset to 1.
Cleared this bit to disable the function.
6-0 UADD[6:0]
USB Address
This field contains the default address (0) after power-up or USB bus reset.
It should be written with the value set by a SET_ADDRESS request received by
the device firmware.