參數(shù)資料
型號(hào): ADSP-21364SBBC-ENG
廠(chǎng)商: ANALOG DEVICES INC
元件分類(lèi): 數(shù)字信號(hào)處理
英文描述: SHARC Processor
中文描述: 16-BIT, 55.55 MHz, OTHER DSP, PBGA136
封裝: MO-205AE, MBGA-136
文件頁(yè)數(shù): 41/52頁(yè)
文件大?。?/td> 853K
代理商: ADSP-21364SBBC-ENG
ADSP-21364
Preliminary Technical Data
Rev. PrB
|
Page 41 of 52
|
September 2004
SPI Interface—Slave
Table 37. SPI Interface Protocol —Slave Switching and Timing Specifications
Parameter
Timing Requirements
t
SPICLKS
t
SPICHS
t
SPICLS
t
SDSCO
Min
Max
Unit
Serial Clock Cycle
Serial Clock High Period
Serial Clock Low Period
SPIDS Assertion to First SPICLK Edge
CPHASE = 0
CPHASE = 1
Last SPICLK Edge to SPIDS Not Asserted, CPHASE = 0
Data Input Valid to SPICLK edge (Data Input Set-up Time)
SPICLK Last Sampling Edge to Data Input Not Valid
SPIDS Deassertion Pulse Width (CPHASE=0)
4 × t
PCLK
2 × t
PCLK
2 × t
PCLK
– 2
ns
ns
ns
ns
2 × t
PCLK
2 × t
PCLK
2 × t
PCLK
2
2
2 × t
PCLK
t
HDS
t
SSPIDS
t
HSPIDS
t
SDPPW
ns
ns
ns
ns
Switching Characteristics
t
DSOE
t
DSDHI
t
DDSPIDS
t
HDSPIDS
t
DSOV
SPIDS Assertion to Data Out Active
SPIDS Deassertion to Data High Impedance
SPICLK Edge to Data Out Valid (Data Out Delay Time)
SPICLK Edge to Data Out Not Valid (Data Out Hold Time)
SPIDS Assertion to Data Out Valid (CPHASE=0)
0
0
4
4
9.4
ns
ns
ns
ns
ns
2 × t
PCLK
5 × t
PCLK
Figure 34. SPI Slave Timing
t
HSPIDS
t
DDSPIDS
t
DSDHI
LSB
MSB
MSB VALID
t
DSOE
t
DDSPIDS
t
HDLSBS
MISO
(OUTPUT)
MOSI
(INPUT)
t
SSPIDS
SPIDS
(INPUT)
SPICLK
(CP = 0)
(INPUT)
SPICLK
(CP = 1)
(INPUT)
t
SDSCO
t
SPICHS
t
SPICLS
t
SPICLS
t
SPICLKS
t
HDS
t
SPICHS
t
SSPIDS
t
HSPIDS
t
DSDHI
LSB VALID
MSB
MSB VALID
t
DSOE
t
DDSPIDS
MISO
(OUTPUT)
MOSI
(INPUT)
t
SSPIDS
LSB VALID
LSB
CPHASE=1
CPHASE=0
t
SDPPW
t
DSOV
t
HDLSBS
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