ITEM C 3-Series - 8.13.5 Pin assignment SD;MMC card

Electrical installation
Page 107
8.13.5 Pin assignment SD/MMC card
Table 46: Pin assignment: SD card
Pin no.
Name
SD mode
SPI mode
1 DATA3/CS Data line 3 (bit 3) Chip select
2 CMD/DI Command/response Host to card commands and data
3 Vss1 Supply voltage earth (ground) Supply voltage earth (ground)
4 Vcc Supply voltage Supply voltage
5 CLK Clock Clock
6 Vss2 Supply voltage earth (ground) Supply voltage earth (ground)
7 DAT0/DO Data line 0 (bit 0) Card to host data and status
8 DAT1 Data line 1 (bit 1) Reserved
9 DAT2 Data line 2 (bit 2) Reserved
Table 47: Pin assignment: MMC card
Pin no.
Name
SD mode
SPI mode
1 RES/CS Not connected or always "1" Chip select
2 CMD/DI Command/response Host to card commands and data
3 Vss1 Supply voltage earth (ground) Supply voltage earth (ground)
4 Vcc Supply voltage Supply voltage
5 CLK Clock Clock
6 Vss2 Supply voltage earth (ground) Supply voltage earth (ground)
7 DAT/DO Data 0 Card to host data and status
Figure 29: Pin assignment: SD/MMC card