Functional description

EMIF06-SD03F3

4/23

Doc ID 15194 Rev 2

Note:

1

When A side signals direction is INPUT, SD-CARD is WRITTEN by CPU-Host (i.e B side

signals direction is OUTPUT)

When A side signals direction is OUTPUT, SD-CARD is READ by CPU-Host (i.e B side

signals direction is INPUT)

2

For B side signals when Enable = L:

* Defined by internal pull-down (see Figure 3 for pins CMD.B and data bus Dat[0…3].B)

Figure 2.

Configuration

Table 2.

Function table

Command signals

A side signals direction

B side signal direction

Enable

CMD. dir

Dat0.dir Dat123.dir CMD.h

CLK.h

CLK-f

Dat0.h

Dat1.h

Dat2.h

Dat3.h

CMD-B

CLK-B

Dat0-B

Dat1-B

Dat2-B

Dat3-B

H

H

X

X

IN

IN

OUT

X

X

OUT

OUT

X

X

H

L

X

X

OUT

IN

OUT

X

X

IN

OUT

X

X

H

X

H

X

X

IN

OUT

IN

X

X

OUT

OUT

X

H

X

L

X

X

IN

OUT

OUT

X

X

OUT

IN

X

HX

X

H

X

IN

OUT

X

IN

X

OUT

X

OUT

H

X

X

L

X

IN

OUT

X

OUT

X

OUT

X

IN

L

X

X

X

X

X

Z

X

X

L*

Z

L*

L*

CPU

IPAD

Mini

SD

Clk

Clk

VccA 1.8 V

VccB

Vbat

CMD

CMD

CMD

CMD Dir

Data 0 - 3

Data 0 - 3

ESD (15 kV)

and EMI

Low drop out

voltage regulator

Dir0

Dir1-3

WP, CD

ESD

2 kV

Feedback Clk