at85c51snd3 ATMEL Corporation, at85c51snd3 Datasheet - Page 92
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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OTG Timers Customizing
Plug-in detection
92
AT85C51SND3B
It is possible to refine some OTG timers thanks to the OTGTCON register (see
Table 108). This register is multiplexed with the OTGCON register. The timers are as
defined in the OTG specification:
•
•
•
•
Table 101. OTG Timer Configuration
The USB connection is detected by the VBUS pad, thanks to the following architecture:
Figure 57. Plug-in Detection Input Block Diagram
PAGE1:0
UVCC
AWaitVrise time-out. [OTG] chapter 6.6.5.1
VbBusPulsing. [OTG] chapter 5.3.4
PdTmOutCnt. [OTG] chapter 5.3.2
SRPDetTmOut. [OTG] chapter 5.3.3
00
01
10
11
VALUE2:0
Pad logic
00
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11
VDD
VSS
Timing Parameter
AWaitVrise time-out = 20 ms.
AWaitVrise time-out = 50 ms.
AWaitVrise time-out = 70 ms.
AWaitVrise time-out = 100 ms.
VbBusPulsing = 15 ms.
VbBusPulsing = 23 ms.
VbBusPulsing = 31 ms.
VbBusPulsing = 40 ms.
PdTmOutCnt = 96 ms.
PdTmOutCnt = 105 ms.
PdTmOutCnt = 118 ms.
PdTmOutCnt = 131 ms.
SRPDetTmOut = 10 µs.
SRPDetTmOut = 100 µs.
SRPDetTmOut = 1 ms.
SRPDetTmOut = 11 ms.
Session_valid
Va_Vbus_valid
VBus_pulsing
VBus_discharge
Logic
USBSTA.0
VBUS
7632D–MP3–01/07
VBUSTI
USBINT.0
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