参数资料
| 型号： | AT73C209-EK |
| 厂商： | Atmel |
| 文件页数： | 8/63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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8. SPI Interface
8.1
SPI architecture
The SPI is a 4 wire bi-directional asynchronous serial link. It works only in slave mode. The pro-
tocol is the following:
Figure 8-1.
SPI Protocol Diagram
SPI_CSB
SPI_CLK
rw a6 a5 a4 a3 a2 a1 a0 d7 d6 d5 d4 d3 d2 d1 d0
SPI_DIN
d7 d6 d5 d4 d3 d2 d1 d0
SPI_DOUT
8.2
SPI Protocol
On SPI_DIN, the first bit is a read/write bit. 0 indicates a write operation while 1 is for a read
operation. The 7 following bits are used for the register address and the 8 last ones are the write
data. For both address and data, the most significant bit is the first one.
In case of a read operation, SPI_DOUT provides the contents of the read register, MSB first.
The transfer is enabled by the SPI_CSB signal, active low. When there is no operation on the
SPI interface, SPI_DOUT is set in high impedance to allow sharing of MCU serial interface with
other devices. The interface is reset at every rising edge of SPI_CSB in order to return to an idle
state, even if the transfer does not succeed. The SPI is synchronized with the serial clock
SPI_CLK. Falling edge latches SPI_DIN input and rising edge shifts SPI_DOUT output bits.
Note that MCLK (Audio Interface Master Clock Input) must run during any SPI write access reg-
isters (from address 0x00 to 0x0C).
8
AT73C209
6365A–PMAAC–12-Mar-08
相关PDF资料 |
PDF描述 |
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| AT73C221-EK | BOARD EVAL FOR AT73C221 |
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相关代理商/技术参数 |
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|---|---|
| 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 |
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| 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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