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| 型號(hào)： | AT85C51SND3B1-7FTUL |
| 廠商： | Atmel |
| 文件頁(yè)數(shù)： | 105/119頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC DECODER/ENCODER DGTL 100CBGA |
| 標(biāo)準(zhǔn)包裝： | 90 |
| 類型： | 音頻編碼器/解碼器 |
| 應(yīng)用： | 移動(dòng)電話，手機(jī)，視頻顯示器 |
| 電壓 - 電源，數(shù)字： | 1.65 V ~ 3.6 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 100-TFBGA |
| 供應(yīng)商設(shè)備封裝： | 100-CTBGA（9x9） |
| 包裝： | 托盤 |
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86
AT85C51SND3B
7632D–MP3–01/07
Figure 50. USB Connection
General Operating Modes
Introduction
After a hardware reset, the USB controller is disabled.
When enabled, the USB controller has to run the Device Controller or the Host Control-
ler. This is performed using the ID detection.
If the ID pin is not connected to ground, the ID bit is set by hardware (internal pull up
on the UID pad) and the USB Device controller is selected.
The ID bit is cleared by hardware when a low level has been detected on the ID pin.
The Device controller is then disabled and the Host controller enabled.
The software anyway has to select the mode (Host, Device) in order to access to the
Device controller registers or to the Host controller registers, which are multiplexed. For
example, even if the USB controller has detected a Device mode (pin ID high), the soft-
ware shall select the device mode (bit HOST cleared), otherwise it will access to the
host registers. This is also true for the Host mode.
Power-On and Reset
Figure 51 shows the USB controller main states after power-on.
Figure 51. USB Controller Reset State Machine
USB Controller state after an hardware reset is ‘Reset’. In this state:
USBE is not set,
the macro clock is stopped in order to minimize the power consumption
(FRZCLK=1),
the macro is disabled,
the pad is in the suspend mode,
the Host and Device USB controllers internal states are reset.
DPH
DMH
VBUS
GND
D+
D-
R
UFT
UVCC
DPF
DMF
R
UFT
UBIAS
CUB
RUB
UVSS
VSS
UID
ID
OTG 5V
Generator
UVCON
ON
Out
Dev ice
Reset
USBE=0
<anyother
state>
USBE=1
ID=1
Clockstopped
FRZCLK=1
Macrooff
USBE=0
Host
USBE=0
HW
RESET
USBE=1
ID=0
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT85C51SND3B1N-DDV | 功能描述:音頻 DSP Microcontroller RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| AT85C51SND3B1N-RTTUL | 功能描述:音頻 DSP Microcontroller RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| AT85C51SND3B1-RTTUL | 功能描述:音頻 DSP MP3/WMA USB2.0 w/o DAC+DC/DC RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| AT85C51SND3B2-RTTUL | 功能描述:音頻 DSP Microcontroller RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| AT85C51SND3BX | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:MP3 Microcontrollers |
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