IDT88P8344 Integrated Device Technology, IDT88P8344 Datasheet - Page 82

• Manufacturer Part Number: IDT88P8344
• Description: Spi Exchange 4 X Spi-3 To Spi-4 Issue 1.0
• Manufacturer: Integrated Device Technology

11.6 AC characteristics
11.6.1 SPI-3 I/O timing
4 interfaces. Note that underclocking and overclocking for the SPI-4 and SPI-
3 interfaces is supported.
IDT88P8344 SPI EXCHANGE 4 x SPI-3 TO SPI-4
I_FCLK, E_FCLK
Duty cycle
Frequency
TR, TF
All outputs
TD
TR, TF
All inputs
TSU
TH
Refer to [SPI-3 in Glossary] for logical timing diagrams of the SPI-3 and SPI-
SPI3 _E_D AT
SPI3_ I_ D AT
I_F C LK, E_ F C L K
MHz
Unit
%
ns
ns
ns
ns
ns
MCLK/4
2.33
0.65
Min.
30
—
—
1
Typ.
—
—
—
—
—
—
—
Max.
5.65
133
70
—
—
2
2
Figure 35. SPI-3 I/O timing diagram
Description
Input SPI-3 clock duty cycle
I_FCLK, E_FCLK
Rise fall time ( 20%, 80% )
Output delay after E_FCLK
Rise fall time ( 20%, 80% )
Input setup before I_FCLK
Input hold after I_FCLK
T su
82
SPI-3 Input / Output
SPI-3 input and output timing is shown in the following paragraph.
T h
INDUSTRIAL TEMPERATURE RANGE
APRIL 10, 2006
6370 drw05