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參數(shù)資料
| 型號(hào)： | AT85C51SND3B1-7FTUL |
| 廠商： | Atmel |
| 文件頁(yè)數(shù)： | 111/119頁(yè) |
| 文件大小： | 0K |
| 描述： | IC DECODER/ENCODER DGTL 100CBGA |
| 標(biāo)準(zhǔn)包裝： | 90 |
| 類(lèi)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(lèi)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(pán) |
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91
AT85C51SND3B
7632D–MP3–01/07
First, Pipe/Endpoint 0 to Pipe/Endpoint 5 are configured, in the growing order. The
memory of each is reserved in the DPRAM.
Then, the Pipe/Endpoint 3 is disabled (EPEN=0), but its memory reservation is
internally kept by the controller.
Its ALLOC bit is cleared: the Pipe/Endpoint 4 “slides” down, but the Pipe/Endpoint 5
does not “slide”.
Finally, if the firmware chooses to reconfigure the Pipe/Endpoint 3, with a bigger
size. The controller reserved the memory after the endpoint 2 memory and
automatically “slide” the Pipe/Endpoint 4. The Pipe/Endpoint 5 does not move and a
memory conflict appear, in that both Pipe/Endpoint 4 and 5 use a common area.
The data of those endpoints are potentially lost.
Notes:
1. the data of Pipe/Endpoint 0 are never lost whatever the activation or deactivation of
the higher Pipe/Endpoint. Its data is lost if it is deactivated.
2. Deactivate and reactivate the same Pipe/Endpoint with the same parameters does
not lead to a “slide” of the higher endpoints. For those endpoints, the data are
preserved.
3. CFGOK is set by hardware even in the case that there is a “conflict” in the memory
allocation.
PAD suspend
In the “idle” mode, the pad is put in low power consumption mode.
In the “active” mode, the pad is working.
Figure 55. Pad Behaviour State Machine
The SUSPI flag indicates that a suspend state has been detected on the USB bus. This
flag automatically puts the USB pad in Idle state. The detection of a non-idle event sets
the WAKEUPI flag and wakes-up the USB pad.
Figure 56. Pad Behavior Waveforms
Moreover, the pad can also be put in the “idle” mode if the DETACH bit is set. It come
back in the active mode when the DETACH bit is cleared.
Idle mode
Active mode
USBE=1
& DETACH=0
& suspend
USBE=0
| DETACH=1
| suspend
Pad Status
WAKEUPI
SUSPI
Active
Idle
Suspend detected
pad => Idle state
Resume detected
pad => Active state
Clear Resume by software
Clear Suspend by software
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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(chēng):ATMEL Corporation 功能描述:MP3 Microcontrollers |
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