参数资料
型号: ADSP-21371KSWZ-2B
厂商: Analog Devices Inc
文件页数: 35/48页
文件大小: 0K
描述: IC DSP 32BIT 266MHZ 208-LQFP
产品培训模块: SHARC Processor Overview
标准包装: 1
系列: SHARC®
类型: 浮点
接口: DAI,DPI
时钟速率: 266MHz
非易失内存: ROM(512 kB)
芯片上RAM: 128kB
电压 - 输入/输出: 3.30V
电压 - 核心: 1.20V
工作温度: 0°C ~ 70°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
ADSP-21371
SPI Interface—Slave
Table 38. SPI Interface ProtocolSlave Switching and Timing Specifications
Parameter
Min
Max
Unit
Timing Requirements
tSPICLKS
Serial Clock Cycle
tSPICHS
Serial Clock High Period
tSPICLS
Serial Clock Low Period
tSDSCO
SPIDS Assertion to First SPICLK Edge
CPHASE = 0
CPHASE = 1
tHDS
Last SPICLK Edge to SPIDS Not Asserted, CPHASE = 0
tSSPIDS
Data Input Valid to SPICLK edge (Data Input Set-up Time)
tHSPIDS
SPICLK Last Sampling Edge to Data Input Not Valid
tSDPPW
SPIDS Deassertion Pulse Width (CPHASE=0)
Switching Characteristics
tDSOE
SPIDS Assertion to Data Out Active
tDSDHI
SPIDS Deassertion to Data High Impedance
tDDSPIDS
SPICLK Edge to Data Out Valid (Data Out Delay Time)
tHDSPIDS
SPICLK Edge to Data Out Not Valid (Data Out Hold Time)
tDSOV
SPIDS Assertion to Data Out Valid (CPHAS E = 0)
4 × tPCLK – 2
2 × tPCLK – 2
2 × tPCLK
2
2 × tPCLK
0
2 × tPCLK
6.8
9.5
5 × tPCLK
ns
SPIDS
(INPUT)
SPICLK
(CP = 0)
(INPUT)
SPICLK
(CP = 1)
(INPUT)
MISO
MOSI
(INPUT)
(OUTPUT)
CPHASE = 1
MISO
(OUTPUT)
MOSI
(INPUT)
CPHASE = 0
tHSPIDS
tDDSPIDS
tDSDHI
LSB
MSB
MSB VALID
tDSOE
tDDSPIDS
tHDSPIDS
tSSPIDS
tSDSCO
tSPIC HS
tSPICLS
tSPICLKS
tHDS
tSPICHS
tSSPIDS
tHSPIDS
tDSDHI
LSB VALID
MSB
MSB VALID
tDDSPIDS
tSSPIDS
LSB VALID
LSB
tSDPPW
tDSOV
tHDSPIDS
Figure 30. SPI Slave Timing
Rev. 0
|
Page 40 of 48
|
June 2007
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