USB4624 datasheet(34/58 Pages) MICROCHIP

部件名	USB4624

功能描述	USB 2.0 HSIC Hi-Speed 4-Port Hub Controller

PDF	58 Pages

Scroll/Zoom	100%

制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

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34 / 58 page

USB 2.0 HSIC Hi-Speed 4-Port Hub Controller

Datasheet

DS00001717A-page 34

 2014 Microchip Technology Inc.

Automatic reads and writes happen when there is an external XDATA read or write, using the serial

stream that has been previously discussed.

7.1.5

Erase Example

To perform a SCTR_ERASE, 32BLK_ERASE, or 64BLK_ERASE, the device writes 0x20, 0x52, or

0xD8, respectively to the first byte of the command buffer, followed by a 3-byte address. The length

of the transfer is set to 4 bytes. To perform this, the device drives SPI_CE_N low, then counts out 8

clocks. It then outputs on SPI_DO the 8 bits of command, followed by 24 bits of address of the location

to be erased. When the transfer is complete, SPI_CE_N goes high, while the SPI_DI line is ignored

in this example.

Figure 7.3 SPI Erase Sequence

SPI_CE_N

SPI_CLK

23 24

12 3 4

ADD.

SPI_DO

SPI_DI

Command

MSB

ADD.

HIGH IMPEDANCE

USB4624 数据表(PDF) 34 Page - Microchip Technology