at85c51snd3 ATMEL Corporation, at85c51snd3 Datasheet - Page 97
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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7632D–MP3–01/07
Reset Value = 0000 0000b
Table 108. OTGTCON Register
OTGTCON (1.E6h) – USB OTG Timer Control Register
Reset Value = 0000 0000b
Number
Number
6-5
4-3
2-0
Bit
Bit
5
4
3
2
1
0
7
1
7
VBUSHWC
Mnemonic Description
VBUSRQC
Mnemonic Description
VBUSREQ
VALUE2:0
HNPREQ
SRPREQ
PAGE1:0
SRPSEL
Bit
Bit
6
1
-
PAGE1:0
HNP Request Bit
Set to initiate the HNP when the controller is in the Device mode (B).
Set to accept the HNP when the controller is in the Host mode (A).
Cleared by hardware after the HNP completion.
SRP Request Bit
Set to initiate the SRP when the controller is in Device mode.
Cleared by hardware when the controller is initiating a SRP.
SRP Selection Bit
Set to choose VBUS pulsing as SRP method.
Clear to choose data line pulsing as SRP method.
VBus Hardware Control Bit
Set to disable the hardware control over the UVCON pin.
Clear to enable the hardware control over the UVCON pin.
VBUS Request Bit
Set to assert the UVCON pin in order to enable the VBUS power supply
generation. This bit shall be used when the controller is in the Host mode.
Cleared by hardware when VBUSRQC is set.
VBUS Request Clear Bit
Set to deassert the UVCON pin in order to enable the VBUS power supply
generation. This bit shall be used when the controller is in the Host mode.
Cleared by hardware immediately after the set.
OTGTCON Pagination
This bit must be set to access the OTGTCON register.
Timer Page Access Bit
Set/clear to access a special timer register.
See Section “OTG Timers Customizing” for more details.
Reserved
The value read from these bits is always 0. Do not set these bits.
Value Bit
Set to initialize the new value of the timer.
See Section “OTG Timers Customizing” for more details.
5
4
-
3
-
2
VALUE2:0
1
0
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