Kontron pITX-SP - Manual (Page 31)

KTD-S0002-I Page 26 Secure Digital I/O and Multimedia Card
p ITX-SP User's Guide
12.2 Pin Strip
The second port is available through the connector J3201 (12 pins).
Header Pin Signal Name Function
1 VCC 1) Power +3.3V
2 N.C. Not connected
3 DAT0 Data bit 0
4 N.C. Not connected
5 DAT1 / IRQ Data bit 1 / Interrupt
6 GND Ground
7 DAT2 / RW Data bit 2 / Read wait
8 /WP Write protect (optional)
9 CD / DAT3 Card detect / Data bit 3
10 /CD Card detect
11 CMD Command line
1 2
11 12
12 CLK Clock
Note: 1) To protect the external power lines of peripheral devices make sure that
- the wires have the right diameter to withstand the maximum available current.
- to enclosure of the peripheral device fulfills the fire-protecting conditions of IEC/EN 60950.
12.3 SD Card Application Note
The Windows ® SD memory card driver does not define the SD memory card as a standard harddisk. This
leads to approximate benchmark results. The size of the cards is shown with 8 MB and the information for
cylinders, sectors and headers is not reported correctly.
The following table gives an overview about some common SD cards.
Reference board:
03001-0000-16-0 (1.6 GHz, Plus variant)
Operating system: Windows ® 7
Test programs: HDTune Pro Vers. 4.01
For comparison in advance some values for other harddisk types respectively interfaces.
Manufacturer / Type Interface Speed (Average)
Western Digital WD10EADS 1 TB S-ATA 70 MB/s
Seagate ST300003U2 160 GB USB 2.0 26 MB/s
Samsung SP0842N 80 GB P-ATA (80 pin cable) 52 MB/s