at85c51snd3 ATMEL Corporation, at85c51snd3 Datasheet - Page 115
at85c51snd3
Manufacturer Part Number
at85c51snd3
Description
At85c51snd3 Single-chip Digital Audio Decoder - Encoder With Usb 2.0 Interface
Manufacturer
ATMEL Corporation
Datasheet
1.AT85C51SND3.pdf
(271 pages)
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Registers
USB Device General Registers
7632D–MP3–01/07
Table 112. UDCON Register
UDCON (1.D9h) – USB Device General Control Register
Reset Value = 0000 0001b
Table 113. UDINT Register
UDINT (1.D8h) – USB Device Global Interrupt Register
Number
Number
7-2
Bit
Bit
7
1
0
7
7
6
5
4
-
-
Mnemonic Description
Mnemonic Description
RMWKUP
WAKEUPI
DETACH
EORSMI
UPRSMI
UPRSMI
Bit
Bit
6
6
-
-
-
Reserved
The value read from these bits is always 0. Do not set these bits.
Remote Wake-up Bit
Set to send an “upstream-resume” to the host for a remote wake-up.
Cleared by hardware. Clearing by software has no effect.
See Section “Remote Wake-Up” for more details.
Detach Bit
Set to physically detach de device.
Clear to reconnect the device. See Section “Detach” for more details.
Reserved
The value read from these bits is always 0. Do not set these bits.
Upstream Resume Interrupt Flag
Set by hardware when the USB controller is sending a resume signal called
“Upstream Resume”. This triggers an USB interrupt if UPRSME is set.
Shall be cleared by software (USB clocks must be enabled before). Setting by
software has no effect.
End Of Resume Interrupt Flag
Set by hardware when the USB controller detects a good “End Of Resume”
signal initiated by the host. This triggers an USB interrupt if EORSME is set.
Shall be cleared by software. Setting by software has no effect.
Wake-up CPU Interrupt Flag
Set by hardware when the USB controller is re-activated by a filtered non-idle
signal from the lines (not by an upstream resume). This triggers an interrupt if
WAKEUPE is set.
Shall be cleared by software (USB clock inputs must be enabled before). Setting
by software has no effect.
See Section “Suspend, Wake-Up and Resume” for more details.
EORSMI
5
5
-
WAKEUPI
4
4
-
EORSTI
3
3
-
SOFI
2
2
-
RMWKUP
MSOFI
1
1
DETACH
SUSPI
0
0
115
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