Atmel Evaluation Kit AT91SAM9M10-G45-EK AT91SAM9M10-G45-EK Data Sheet

 672

SAM9M10 [DATASHEET]

6355F–ATARM–12-Mar-13

MMC Bus Connections (One Slot)

Note:

When several HSMCI (x HSMCI) are embedded in a product, MCCK refers to HSMCIx_CK, MCCDA to HSMCIx_CDA MCDAy 
to HSMCIx_DAy.

SD Memory Card Bus Topology

The SD Memory Card bus includes the signals listed in 

. 

Notes:

1. I: input, O: output, PP: Push Pull, OD: Open Drain.

2. When several HSMCI (x HSMCI) are embedded in a product, MCCK refers to HSMCIx_CK, MCCDA to 

HSMCIx_CDA, MCDAy to HSMCIx_DAy.

MCCDA

MCDA0

MCCK

HSMCI

2 3 4 5 6

1

7

MMC1

9 1011

1213 8

2 3 4 5 6

1

7

MMC2

9 1011

1213 8

2 3 4 5 6

1

7

MMC3

9 1011

1213 8

2 3 4 5 6

1

7 8

SD CARD

9

SD Memory Card Bus Signals 

1

CD/DAT[3]

I/O/PP

Card detect/ Data line Bit 3

MCDz3

2

CMD

PP

Command/response

MCCDz

3

VSS1

S

Supply voltage ground

VSS

4

VDD

S

Supply voltage

VDD

5

CLK

I/O

Clock

MCCK

6

VSS2

S

Supply voltage ground

VSS

7

DAT[0]

I/O/PP

Data line Bit 0

MCDz0

8

DAT[1]

I/O/PP

Data line Bit 1 or Interrupt

MCDz1

9

DAT[2]

I/O/PP

Data line Bit 2

MCDz2