Using the AT85DVK-07 Board
AT85DVK-07 Development Board User Guide
2-15
4391B–MP3–07/07
Figure 2-14.
MMC/SD Unit Implementation
2.7.1
MMC I/O Extension
Two extension connectors J31 and J32 (see Table 2-13 and Table 2-14) are imple-
mented to get an access to the P2 alternate I/Os in case MMC is not used, or to plug an
other socket (e.g. Mini-SD) through a daughter board.
Table 2-13.
MMC/SD I/O Extension Connector (J31)
Table 2-14.
MMC/SD I/O Extension Connector (J32)
2.8
Audio Input Unit
The Audio Input unit consists in the electret microphone unit and a 3.5mm stereo input
jack J3.
J32
J31
J28
P2
P2
M
M
C
/S
D
Pin Number
Pin Name
Pin Description
1
P2.0/SDINS
SD/MMC Card Insertion Signal
2
P2.1/SDLCK
SD Card Write Lock Signal
3
P2.2/SDCMD
SD/MMC Command Line
4
P2.3/SDCLK
SD/MMC Clock
5
P2.4/SDDAT0
SD/MMC Data Line 0
Pin Number
Pin Name
Pin Description
1
P2.5/SDDAT1
SD/MMC Data Line 1
2
P2.6/SDDAT2
SD/MMC Data Line 2
3
P2.7/SDDAT3
SD/MMC Data Line 3
4
VDD
IOVDD power supply 1.8V or 3V depending on the power configuration
5
VSS
0V digital supply reference
