参数资料
型号: ADSP-21375BSWZ-2B
厂商: Analog Devices Inc
文件页数: 44/56页
文件大小: 0K
描述: IC DSP 32BIT 266MHZ 208-MQFP
产品培训模块: SHARC Processor Overview
标准包装: 36
系列: SHARC®
类型: 浮点
接口: DAI,DPI
时钟速率: 266MHz
非易失内存: ROM(256 kB)
芯片上RAM: 64kB
电压 - 输入/输出: 3.30V
电压 - 核心: 1.20V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 208-LQFP 裸露焊盘
供应商设备封装: 208-LQFP-EP(28x28)
包装: 托盘
SPI Interface—Master
The processor contains two SPI ports. Both primary and sec-
ondary are available through DPI only. The timing provided in
Table 37 and Table 38 applies to both.
Table 37. SPI Interface Protocol—Master Switching and Timing Specifications
Parameter
Min
Max
Unit
Timing Requirements
t SSPIDM
t HSPIDM
Data Input Valid To SPICLK Edge (Data Input Setup Time)
SPICLK Last Sampling Edge To Data Input Not Valid
8.2
2
ns
ns
Switching Characteristics
t SPICLKM
t SPICHM
t SPICLM
t DDSPIDM
t HDSPIDM
t SDSCIM
t HDSM
t SPITDM
Serial Clock Cycle
Serial Clock High Period
Serial Clock Low Period
SPICLK Edge to Data Out Valid (Data Out Delay Time)
SPICLK Edge to Data Out Not Valid (Data Out Hold Time)
DPI Pin (SPI Device Select) Low to First SPICLK Edge
Last SPICLK Edge to DPI Pin (SPI Device Select) High
Sequential Transfer Delay
8 × t PCLK – 2
4 × t PCLK – 2
4 × t PCLK – 2
4 × t PCLK – 2
4 × t PCLK – 2
4 × t PCLK – 2
4 × t PCLK – 1
2.5
ns
ns
ns
ns
ns
ns
ns
ns
DPI
(OUTPUT)
SPICLK
(CP = 0,
CP = 1)
(OUTPUT)
t SDSCIM
t SPICHM
t SPICLM
t SPICLKM
t HDSM
t SPITDM
MOSI
(OUTPUT)
t DDSPIDM
t HDSPIDM
CPHASE = 1
t SSPIDM
t HSPIDM
t SSPIDM
t HSPIDM
MISO
(INPUT)
MOSI
(OUTPUT)
t DDSPIDM
t HDSPIDM
CPHASE = 0
t SSPIDM
t HSPIDM
MISO
(INPUT)
Figure 31. SPI Master Timing
Rev. D | Page 44 of 56 | April 2013
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