88F6281

Hardware Specifications

1.2.17Secure Digital Input/Output (SDIO) Interface

 

 

 

 

All of the SDIO signals are multiplexed on the MPP pins (see Section 4, Pin Multiplexing,

 

 

 

 

 

 

 

 

on page 51).

 

Note

 

 

 

 

 

 

 

Table 19: Secure Digital Input/Output (SDIO) Interface Signal Assignment

Pin Name

I/O

Pin Type

Power Rail

Description

SD_CLK

O

CMOS

VDDO

SDIO Clock

SD_CMD

I/O

CMOS

VDDO

SDIO Command

 

 

 

 

Used to transfer a command serially from the SDIO host to the

 

 

 

 

SDIO device. Used to transfer a command response serially

 

 

 

 

from the SDIO device to the SDIO host.

 

 

 

 

NOTE: This pin requires a pull up on board.

SD_D[3:0]

I/O

CMOS

VDDO

SDIO Data Input/Output

 

 

 

 

Used to transfer data from the SDIO host to the SDIO device or

 

 

 

 

vice versa.

 

 

 

 

NOTE: These pins require a pull up on board.

Doc. No. MV-S104859-U0 Rev. E

 

Copyright © 2008 Marvell

Page 42

Document Classification: Proprietary Information

December 2, 2008, Preliminary

Page 42
Image 42
Marvel Group 88F6281 specifications Secure Digital Input/Output Sdio Interface, Sdclk Cmos Vddo, Sdcmd Cmos Vddo