參數(shù)資料
型號(hào): ADSP-BF531SBST400
廠商: ANALOG DEVICES INC
元件分類: 數(shù)字信號(hào)處理
英文描述: Circular Connector Series:97
中文描述: 16-BIT, 40 MHz, OTHER DSP, PQFP176
封裝: 24 X 24 MM, LQFP-176
文件頁(yè)數(shù): 34/56頁(yè)
文件大小: 671K
代理商: ADSP-BF531SBST400
Rev. 0
|
Page 34 of 56
|
March 2004
ADSP-BF531/ADSP-BF532/ADSP-BF533
Serial Peripheral Interface (SPI) Port
—Slave Timing
Table 28
and
Figure 20
describe SPI port slave operations.
Table 28. Serial Peripheral Interface (SPI) Port—Slave Timing
Parameter
Timing Requirements
t
SPICHS
t
SPICLS
t
SPICLK
t
HDS
t
SPITDS
t
SDSCI
t
SSPID
t
HSPID
Switching Characteristics
t
DSOE
t
DSDHI
t
DDSPID
t
HDSPID
Min
Max
Unit
Serial Clock High Period
Serial Clock low Period
Serial Clock Period
Last SCK Edge to SPISS Not Asserted
Sequential Transfer Delay
SPISS Assertion to First SCK Edge
Data Input Valid to SCK Edge (Data Input Setup)
SCK Sampling Edge to Data Input Invalid
2t
SCLK
–1.5
2t
SCLK
–1.5
4t
SCLK
–1.5
2t
SCLK
–1.5
2t
SCLK
–1.5
2t
SCLK
–1.5
1.6
1.6
ns
ns
ns
ns
ns
ns
ns
ns
SPISS Assertion to Data Out Active
SPISS Deassertion to Data High impedance
SCK Edge to Data Out Valid (Data Out Delay)
SCK Edge to Data Out Invalid (Data Out Hold)
0
0
0
0
8
8
10
10
ns
ns
ns
ns
Figure 20. Serial Peripheral Interface (SPI) Port—Slave Timing
t
HSPID
t
DDSPID
t
DSDHI
LSB
MSB
MSB VALID
t
HSPID
t
DSOE
t
DDSPID
t
HDSPID
MISO
(OUTPUT)
MOSI
(INPUT)
t
SSPID
SPISS
(INPUT)
SCK
(CPOL = 0)
(INPUT)
SCK
(CPOL = 1)
(INPUT)
t
SDSCI
t
SPICHS
t
SPICLS
t
SPICLS
t
SPICLK
t
HDS
t
SPICHS
t
SSPID
t
HSPID
t
DSDHI
LSB VALID
MSB
MSB VALID
t
DSOE
t
DDSPID
MISO
(OUTPUT)
MOSI
(INPUT)
t
SSPID
LSB VALID
LSB
CPHA=1
CPHA=0
t
SPITDS
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