參數(shù)資料
型號(hào): IDT88P8344BHGI
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 微控制器/微處理器
英文描述: SPI EXCHANGE 4 x SPI-3 TO SPI-4 Issue 1.0
中文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PBGA820
封裝: GREEN, PLASTIC, BGA-820
文件頁(yè)數(shù): 82/98頁(yè)
文件大小: 601K
代理商: IDT88P8344BHGI
82
IDT88P8344 SPI EXCHANGE 4 x SPI-3 TO SPI-4
INDUSTRIAL TEMPERATURE RANGE
APRIL 10, 2006
11.6 AC characteristics
11.6.1 SPI-3 I/O timing
Refer to [SPI-3 in Glossary] for logical timng 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 timng is shown in the following paragraph.
I_FCLK, E_FCLK
Duty cycle
Frequency
TR, TF
All outputs
TD
TR, TF
All inputs
TSU
TH
Unit
%
MHz
ns
Mn.
30
MCLK/4
Typ.
Max.
70
133
2
Description
Input SPI-3 clock duty cycle
I_FCLK, E_FCLK
Rise fall time ( 20%, 80% )
ns
ns
2.33
5.65
2
Output delay after E_FCLK
Rise fall time ( 20%, 80% )
ns
ns
1
Input setup before I_FCLK
Input hold after I_FCLK
0.65
TABLE 132 – SPI-3 AC INPUT / OUTPUT TIMING SPECIFICATIONS
6370 drw05
I_FCLK, E_FCLK
SPI3_I_DAT
SPI3_E_DAT
Tsu
Th
Td
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