參數(shù)資料
型號: IDT88P8344BHGI
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 81/98頁
文件大?。?/td> 0K
描述: IC SPI3-SPI4 EXCHANGE 820-PBGA
標準包裝: 24
系列: *
其它名稱: 88P8344BHGI
82
IDT88P8344 SPI EXCHANGE 4 x SPI-3 TO SPI-4
INDUSTRIALTEMPERATURERANGE
APRIL 10, 2006
11.6 AC characteristics
11.6.1 SPI-3 I/O timing
Refer to [SPI-3 in Glossary] for logical timing diagrams of the SPI-3 and SPI-
4 interfaces. Note that underclocking and overclocking for the SPI-4 and SPI-
3 interfaces is supported.
Figure 35. SPI-3 I/O timing diagram
SPI-3 Input / Output
SPI-3 input and output timing is shown in the following paragraph.
I_FCLK, E_FCLK
Unit
Min.
Typ.
Max.
Description
Duty cycle
%
30
70
Input SPI-3 clock duty cycle
Frequency
MHz
MCLK/4
133
I_FCLK, E_FCLK
TR, TF
ns
2
Rise fall time ( 20%, 80% )
All outputs
TD
ns
2.33
5.65
Output delay after E_FCLK
TR, TF
ns
2
Rise fall time ( 20%, 80% )
All inputs
TSU
ns
1
Input setup before I_FCLK
TH
ns
0.65
Input hold after I_FCLK
TABLE 132 – SPI-3 AC INPUT / OUTPUT TIMING SPECIFICATIONS
6370 drw05
I_F C LK, E_ F C L K
SPI3_I_D AT
SPI3 _E_D AT
Tsu
Th
T d
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