Cinterion DSB75 - SD 1 Bit Mode; Table 20: Pin Assignment of SD Card Interface X301 (SD 1 Bit Mode)

DSB75 Development Support Board Rev. B1 Hardware Description
Confidential / Released
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DSB75_hd_v12 Page 51 of 96 2008-08-26
3.10.2 SD 1 Bit Mode
Table 20: Pin assignment of SD card interface X301 (SD 1 bit mode)
X301
pin
X301
signal
name
I/O Description Remark X100
signal
name
Configuration
switches
1 - I/O Not used SD_D3 S453:3
S301:1
2 CMD O Command /
Response
SD_CMD S455:1
S303:1
3 VSS1 Supply Ground GND
4 VDD Supply Supply
voltage
2.9V
5 CLK O Clock 25.4kHz …13MHz
(depends on SW
performance)
SD_CLK S454:1
S305:1
6 VSS2 Supply Ground GND
7 DATA I/O Data line SD_D0 S450:1
S307:1
8 - Not used
9 - Not used
10 CD I Card
detection
0 = card inserted
1 = card removed
Note: On each edge an
interrupt will be generated.
Removing the card will stop
its operation before
disconnecting it.
SD_DET
11 WP I Write protect
detection
0 = unlocked
1 = locked
SD_WP