AT85C51SND3Bx
Bit
Bit
Number
Mnemonic Description
Upstream Resume Received Interrupt
Set by hardware when an Upstream Resume has been received from the
Device.
4
RXRSMI
Shall be cleared by software. Setting by software has no effect.
Downstream Resume Sent Interrupt
3
2
1
0
RSMEDI
RSTI
Set by hardware when a Downstream Resume has been sent to the Device.
Shall be cleared by software. Setting by software has no effect.
USB Reset Sent Interrupt
Set by hardware when a USB Reset has been sent to the Device.
Shall be cleared by software. Setting by software has no effect.
Device Disconnection Interrupt
DDISCI
DCONNI
Set by hardware when the device has been removed from the USB bus.
Shall be cleared by software. Setting by software has no effect.
Device Connection Interrupt
Set by hardware when a new device has been connected to the USB bus.
Shall be cleared by software. Setting by software has no effect.
Reset Value = 0000 0000b
Table 134. UHIEN Register
UHIEN (1.DAh) – USB Host General Interrupt Enable Register
7
6
5
4
3
2
1
0
-
HWUPE
HSOFE
RXRSME
RSMEDE
RSTE
DDISCE
DCONNE
Bit
Bit
Number
Mnemonic Description
Reserved
7
6
-
The value read from this bit is always 0. Do not set this bit.
Host Wake-Up Interrupt Enable
HWUPE
HSOFE
Set this bit to enable HWUP interrupt.
Clear this bit to disable HWUP interrupt.
Host Start Of frame Interrupt Enable
5
4
3
2
1
Set this bit to enable HSOF interrupt.
Clear this bit to disable HSOF interrupt.
Upstream Resume Received Interrupt Enable
RXRSME Set this bit to enable the RXRSMI interrupt.
Clear this bit to disable the RXRSMI interrupt.
Downstream Resume Sent Interrupt Enable
RSMEDE
RSTE
Set this bit to enable the RSMEDI interrupt.
Clear this bit to disable the RSMEDI interrupt.
USB Reset Sent Interrupt Enable
Set this bit to enable the RSTI interrupt.
Clear this bit to disable the RSTI interrupt.
Device Disconnection Interrupt Enable
DDISCE
Set this bit to enable the DDISCI interrupt.
Clear this bit to disable the DDISCI interrupt.
137
7632A–MP3–03/06
ATMEL [ ATMEL ]
