at85c51snd3b ATMEL Corporation, at85c51snd3b Datasheet - Page 116
at85c51snd3b
Manufacturer Part Number
at85c51snd3b
Description
Single-chip Digital Audio Decoder - Encoder With Usb 2.0 Interface
Manufacturer
ATMEL Corporation
Datasheet
1.AT85C51SND3B.pdf
(270 pages)
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AT85C51SND3B
Reset Value = 0000 0000b
Table 114. UDIEN Register
UDIEN (1.DAh) – USB Device Global Interrupt Enable Register
Number
Number
Bit
Bit
3
2
1
0
7
7
6
5
4
3
2
1
-
Mnemonic Description
WAKEUPE
Mnemonic Description
EORSME
UPRSME
UPRSME
EORSTE
EORSTI
MSOFE
MSOFI
SUSPI
SOFE
SOFI
Bit
Bit
6
-
End Of Reset Interrupt Flag
Set by hardware when an “End Of Reset” has been detected by the USB
controller. This triggers an USB interrupt if EORSTE is set.
Shall be cleared by software. Setting by software has no effect.
Start Of Frame Interrupt Flag
Set by hardware when an USB “Start Of Frame” PID (SOF) has been detected
(every 1 ms). This triggers an USB interrupt if SOFE is set.
Micro-Start Of Frame Interrupt Flag
Set by hardware when an USB “Micro-Start Of Frame” PID (SOF) has been
detected (every 125 s). This triggers an USB interrupt if MSOFE is set.
Suspend Interrupt Flag
Set by hardware when an USB “Suspend” ‘idle bus for 3 frame periods: a J state
for 3 ms) is detected. This triggers an USB interrupt if SUSPE is set.
Shall be cleared by software. Setting by software has no effect.
See Section “Suspend, Wake-Up and Resume” for more details.
Reserved
The value read from these bits is always 0. Do not set these bits.
Upstream Resume Interrupt Enable Bit
Set to enable the UPRSMI interrupt.
Clear to disable the UPRSMI interrupt.
End Of Resume Interrupt Enable Bit
Set to enable the EORSMI interrupt.
Clear to disable the EORSMI interrupt.
Wake-Up CPU Interrupt Enable Bit
Set to enable the WAKEUPI interrupt.
Clear to disable the WAKEUPI interrupt.
End Of Reset Interrupt Enable Bit
Set to enable the EORSTI interrupt. This bit is set after a reset.
Clear to disable the EORSTI interrupt.
Start Of Frame Interrupt Enable Bit
Set to enable the SOFI interrupt.
Clear to disable the SOFI interrupt.
Micro-Start Of Frame Interrupt Enable Bit
Set to enable the MSOFI interrupt.
Clear to disable the MSOFI interrupt.
EORSME
5
WAKEUPE
4
EORSTE
3
SOFE
2
MSOFE
1
7632C–MP3–11/06
SUSPE
0
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