User's Manual

GSM/GPRS Module Series
M85 Hardware Design
M85_Hardware_Design Confidential / Released 54 / 88
Table 13: Pin Definition of the SD Card Interface
Module
SD_DATA0
SD_CLK
SD_CMD
DATA2
DATA1
DATA0
CD/DATA3
CMD
VSS1
VDD
CLK
VSS2
47K47K 47K
4.7uF 0.1nF
VDD_EXT
33R
33R
33R
SD Socket
1
2
3
4
5
6
7
8
9
Figure 35: Reference Circuit for SD Card
Table 14: Pin Definition of the SD Card Interface
Pin Name
Pin No.
Description
SD_CMD
34
Command signal of SD card output
SD_CLK
35
Clock signal of SD card output
SD_DATA0
36
Data output and input signal of SD card
Pin No.
Pin Name of SD Card
Pin Name of T-Flash (Micro SD) Card
1
CD/DATA3
DATA2
2
CMD
CD/DATA3
3
VSS1
CMD
4
VDD
VDD
5
CLK
CLK
6
VSS2
VSS
7
DATA0
DATA0