
Spectrum Digital, Inc
3.2.14 J28, MMC/SD Connector
The J28 MMC/SD connector is located on the top side of the board and is used to
provide an interface to a MMC/SD card. The signals present on J28 are also present
on J12. Therefore, when J28 is used the operator can not use J12 for a CE-ATA disk
drive. The pinout for the J28 connector is shown in the table below.
Table 14: J28, MMC/SD Connector
3-14
Pin #
1
3
5
7
9
11
Signal
SD1_DATA3
GND
SD1_CLK
SD1_DATA0
SD1_DATA2
GND
Pin #
2
4
6
8
10
12
Signal
SD1_CMD
VCC_3V3
GND
SD1_DATA1
Write Protect 1
Insert 1
DM355 EVM Technical Reference