USB3613 datasheet(51/57 Pages) MICROCHIP

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USB 2.0 Hi-Speed 3-Port Hub Controller Optimized for Portable Applications

Datasheet

 2014 Microchip Technology Inc.

DS00001714A-page 51

9.5.7

SPI Timing

The following specifies the SPI timing requirements for the device.

Note: The SPI can be configured for 30 MHz or 60 MHz operation via the SPI_SPD_SEL

configuration strap. 30 MHz operation timing values are shown in Table 9.7. 60 MHz operation

timing values are shown in Table 9.8.

Figure 9.4 SPI Timing

Table 9.7 SPI Timing Values (30 MHz Operation)

SYMBOL

DESCRIPTION

MIN

TYP

MAX

UNITS

tfc

Clock frequency

MHz

tceh

Chip enable (SPI_CE_EN) high time

100

tclq

Clock to input data

tdh

Input data hold time

tos

Output setup time

toh

Output hold time

tov

Clock to output valid

tcel

Chip enable (SPI_CE_EN) low to first clock

tceh

Last clock to chip enable (SPI_CE_EN) high

SPI_CLK

SPI_DI

SPI_DO

SPI_CE_N

tcel

tfc

tclq

tceh

tdh

toh

tos

tov

toh

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