at85c51snd3b ATMEL Corporation, at85c51snd3b Datasheet - Page 95

• Manufacturer Part Number: at85c51snd3b
• Description: Single-chip Digital Audio Decoder - Encoder With Usb 2.0 Interface
• Manufacturer: ATMEL Corporation

7632C–MP3–11/06
Reset Value = 0010 0000b
Table 103. USBSTA Register
USBSTA (1.E2h) – USB General Status Register
Reset Value = 0000 0000b
Table 104. USBINT Register
USBINT (1.E3h) – USB Global Interrupt Register
Reset Value = 0000 0000b
Number
Number
Number
7-3
7-2
Bit
Bit
Bit
0
7
2
1
0
7
1
0
-
-
Mnemonic Description
Mnemonic Description
Mnemonic Description
VBUSTE
VBUSTI
SPEED
VBUS
IDTI
Bit
Bit
Bit
ID
6
6
-
-
-
-
VBUS Transition Interrupt Enable Bit
Set this bit to enable the VBUS Transition interrupt generation.
Clear this bit to disable the VBUS Transition interrupt generation.
Reserved
The value read from these bits is always 0. Do not set these bits.
Speed Status Flag
Set by hardware when the controller is in HIGH-SPEED mode.
Cleared by hardware when the controller is in FULL-SPEED mode.
IUD Pin Flag
Set / cleared by hardware and reflects the state of the UID pin.
VBus Flag
Set / cleared by hardware and reflects the level of the UVCC pin.
See Section “Plug-in detection” for more details.
Reserved
The value read from these bits is always 0. Do not set these bits.
ID Transition Interrupt Flag
Set by hardware when a transition (high to low, low to high) has been detected
on the UID pin.
Shall be cleared by software.
VBUS Transition Interrupt Flag
Set by hardware when a transition (high to low, low to high) has been detected
on the UVCC pin.
Shall be cleared by software.
5
5
-
-
4
4
-
-
3
3
-
-
AT85C51SND3B
SPEED
2
2
-
IDTI
ID
1
1
VBUSTI
VBUS
0
0
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