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3.4.2 Cable connector specifications
Table 3.2 lists the recommended specifications for the cable connectors for Host system that do
not support Ultra DMA modes greater than mode 2.
For Host system that support Ultra DMA modes greater than mode 2, the 80-conductor cable
assemblies shall be used. The 80-conductor cable assemblies are manufactured by AMP or 3M.
Table 3.2 Cable connector specifications
Name Model Manufacturer
Cable socket
(closed-end type)
FCN-707B040-AU/B Fujitsu
Cable socket
(through-end type)
FCN-707B040-AU/O Fujitsu
Cable socket housing 1-480424-0 AMP
Contact 60617-4 AMP
Note :
The cable of twisted pairs and neighboring line separated individually is not allowed to use for
the host interface cable. It is because that the location of signal lines in these cables is not
fixed, and so the problem on the crosstalk among signal lines may occur.
It is recommended to use the ribbon cable for ATA interface that cable length is less than 46
cm (18 inch) and cable capacitance is less than 35 pico farad. Also it is recommended to use
AWG18 power supply cable.
3.4.3 Device connection
Figure 3.9 shows how to connect the devices.
ATA interface cable Power supply cable
DC
power supply
Disk Drive #1
Disk Drive #0
Host system
Figure 3.9 Cable connections
Power supply cable
(CN1)
ATA interface cable
(40-pin, CN1)