The MMC or SD card must be inserted into the front panel socket with the contacts facing down.
Figure A.3 shows the pin numbering and signal assignment. In addition, the socket contains switches that are operated by card insertion that provide signaling on the CARDINx and MCI_WPROT signals.
The MMC card uses seven pins, and the SD card uses all nine pins. The additional pins are located as shown in Figure A.3 with pin 9 next to pin 1 and pins 7 and 8 spaced more closely together than the other pins. Figure A.4 shows an MMC card, with the contacts face up.
Table A.2 lists the signal assignments.
|Pin||Signal||Function SD widebus mode||Function MCI|
|4||MCIVDDx||Supply voltage||Supply voltage|
|7||MCIxDATA0||Data 0||Data out|
|10 (DET A)||CARDINx||Card insertion detect||Card insertion detect|
|11 (DET B)||WPROTx||Write protect status||Write protect status|