Hitachi HTS543232L9A300 Specifications - Page 39
Electrical interface specifications
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5K320 SATA OEM Specification 7 Electrical interface specifications 7.1 Cabling The maximum cable length from the host system to the hard disk drive plus circuit pattern length in the host system shall not exceed 1 meter. 7.2 Interface connector The figure below shows the physical pin location. Figure 3. Interface connector pin assignments All pins are in a single row, with a 127 mm(.050") pitch. The comments on the mating sequence in Table in the section 7.3 apply to the case of back-plane blind-mate connector only. In this case, the mating sequences are:(1)the ground pins P4 and P12;(2) the pre-charge power pins and the other ground pins; and (3) the signal pins and the rest of the power pins. There are three power pins for each voltage. One pin from each voltage is used for pre-charge in the backplane blind-mate situation. If a device uses 3.3V, then all V33 pins must be terminated. Otherwise, it is optional to terminate any of the V33 pins If a device uses 5.0V, then all V5 pins must be terminated. Otherwise, it is optional to terminate any of the V5 pins If a device uses 12.0V, then all V12 pins must be terminated. Otherwise, it is optional to terminate any of the V12 pins. 39