参数资料
| 型号： | AT73C209-EK |
| 厂商： | Atmel |
| 文件页数： | 51/63页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR AT73C209 |
| 标准包装： | 1 |
| 系列： | PMAAC™ |
| 主要目的： | 电源管理，专用型: 手机 |
| 已用 IC / 零件： | AT73C209 |
| 已供物品： | 板，CD，文档 |
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AT73C209
12.4
Audio DAC Start-up Sequences
The power up of the circuit can be performed independently for several blocks. The figure below
presents the sequence carried out for powering up a specific block XX where XX can be any of
the several blocks described below0
Figure 12-5. DAC Startup DIagram
Circuit in
Reset State
(rstz low)
* Circuit pre-charging
User Controlled
Fastcharge
XX
Set Low
End
Disable Reset
All Blocks are in
Power Down
(rstz high)
On XX
Set to High
begin
fastcharge
XX Block Ready
XX Block in
Power Down
Fastcharge
XX Set
High
On XX
Set to Low
Fastcharge
= Register Write Operation
* Circuit must be in this state for the specified fastcharge interval.
The sequence flow starts by setting to High the block specific fast-charge control bit and subse-
quently the associated power control bit. Once the power control bit is set to High, the fast
charging starts. This action begins a user controlled fast-charge cycle. When the fast-charge
period is over, the user must reset the associated fast-charge bit and the block is ready for use.
If a power control bit is cleared a new power up sequence is needed.
The several blocks with independent power control are identified in Table 12-1 below. The table
describes the power-on control and fast-charge bits for each block.
Table 12-1.
Power-on Control and Fast-charge Bits Table
Powered Up Block
Vref & Vcm generator
Left line in amplifier
Right line in amplifier
Left line out amplifier
Right line out amplifier
Left D-to-A converter
Right D-to-A converter
Power On Control Bit
onmstr (reg 0x0C; bit #0)
onlnil (reg 0x00; bit #0)
onlnir (reg 0x00; bit #1)
onlnol (reg 0x00; bit #2)
onlnor (reg 0x00; bit #3)
ondacl (reg 0x00; bit #4)
ondacr (reg 0x00; bit #5)
Precharge Control Bit
prcharge (reg 0x0C; bit #1)
prchargeil (reg 0x0C; bit #2)
prchargeir (reg 0x0C; bit #3)
prchargeol (reg 0x0C; bit #4)
prchargeor (reg 0x0C; bit #5)
Not Needed
Not Needed
The power-on settling times for each of the different blocks are described in Table 12-1 below.
51
6365A–PMAAC–12-Mar-08
相关PDF资料 |
PDF描述 |
|---|---|
| AT73C212-EK | BOARD EVAL FOR AT73C212 |
| AT73C213-EK | BOARD EVAL FOR AT73C213 |
| AT73C221-EK | BOARD EVAL FOR AT73C221 |
| AT73C224-EK1 | KIT EVALUATION FOR AT73C224 |
| AT73C239-EK | KIT EVAL FOR AT73C239 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT73C211 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Power Management |
| AT73C211-CI | 功能描述:其他电源管理 NGD MONOLITHIC NUMERIC IC RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
| AT73C211-EK | 功能描述:开发板和工具包 - ARM AT73C211 EVALUATION BOARD RoHS:否 制造商:Arduino 产品:Development Boards 工具用于评估:ATSAM3X8EA-AU 核心:ARM Cortex M3 接口类型:DAC, ICSP, JTAG, UART, USB 工作电源电压:3.3 V |
| AT73C211-ZI | 功能描述:IC POWER MANAGEMENT 48FBGA 制造商:microchip technology 系列:- 包装:带卷（TR） 零件状态:停產 应用:电源管理 - 手持设备 电流 - 电源:- 电压 - 电源:- 工作温度:-20°C ~ 85°C 封装/外壳:48-FBGA 基本零件编号:AT73C211 标准包装:2,500 |
| AT73C212 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Power Management for Mobiles (PM) |
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