Advantech PCA-6774 user manual IDE connector CN1,CN2, Connecting the hard drive

set on the end (after the twist in the cable) connects to the A: drive.

The set in the middle connects to the B: drive.

3.If you are connecting a 5.25” floppy drive, line up the slot in the printed circuit board with the blocked-off part of the cable connec-

tor.

If you are connecting a 3.5” floppy drive, you may have trouble determin- ing which pin is number one. Look for a number printed on the circuit board indicating pin number one. In addition, the connector on the floppy drive may have a slot. When the slot is up, pin number one should be on the right. Check the documentation that came with the drive for more information.

If you desire, connect the B: drive to the connectors in the middle of the cable as described above.

In case you need to make your own cable, you can find the pin assign- ments for the board’s connector in Appendix B.

2.14 IDE connector (CN1,CN2)

The PCA-6774 provides an IDE channel to which you can attach up to two Enhanced Integrated Device Electronics hard disk drives or CDROM to the PCA-6774’s internal controller. The PCA-6774's IDE controller uses a PCI interface. This advanced IDE controller supports faster data transfer, PIO Mode 3 or Mode 4, UDMA 33/66/100 mode.

2.14.1 Connecting the hard drive

Connecting drives is done in a daisy-chain fashion. It requires one of two cables (not included in this package), depending on the drive size. 1.8" and 2.5" drives need a 1 x 44-pin to 2 x 44-pin flat-cable connector. 3.5" drives use a 1 x 44-pin to 2 x 40-pin connector.

Wire number 1 on the cable is red or blue, and the other wires are gray.

1.Connect one end of the cable to CN1, CN2. Make sure that the red (or blue) wire corresponds to pin 1 on the connector, which is labeled on the board (on the right side).

2.Plug the other end of the cable into the Enhanced IDE hard drive, with pin 1 on the cable corresponding to pin 1 on the hard drive. (See your hard drive’s documentation for the location of the con- nector.)

If desired, connect a second drive as described above.

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