
Interface
5.1.4 Connector pinouts
The pin definitions are shown in Table 5.2.
Table 5.2 Connector pinouts
Signal segment key
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| S1 |
| Gnd |
| 2nd mate |
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| S2 |
| A+ |
| Differential signal pair A from Phy |
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Signal | segment | S3 |
| A- |
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S4 |
| Gnd |
| 2nd mate |
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| S5 |
| B- |
| Differential signal pair B from Phy |
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| S6 |
| B+ |
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| S7 |
| Gnd |
| 2nd mate |
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| Signal segment “L” |
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| Central connector polarizer |
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| Power segment “L” |
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| P1 |
| V33 |
| 3.3 V power | *1 |
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| P2 |
| V33 |
| 3.3 V power | *1 |
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| P3 |
| V33 |
| 3.3 V power, | *1 | |
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| P4 |
| Gnd |
| 1st mate |
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| P5 |
| Gnd |
| 2nd mate |
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| P6 |
| Gnd |
| 2nd mate |
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| P7 |
| V5 |
| 5 V power, |
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| segment | P8 |
| V5 |
| 5 V power |
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Power |
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P9 |
| V5 |
| 5 V power |
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| P10 |
| Gnd |
| 2nd mate |
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| P11 |
| Reserved |
| The pin corresponding to P11 in the backplane | ||
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| receptacle connector is also reserved |
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| The corresponding pin to be mated with P11 | ||
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| in the power cable receptacle connector shall | ||
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| be grounded |
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| P12 |
| Gnd |
| 1st mate |
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| P13 |
| V12 |
| 12 V power, | *1 | |
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| P14 |
| V12 |
| 12 V power | *1 |
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| P15 |
| V12 |
| 12 V power | *1 |
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Power segment key |
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Notes: |
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*1 Since applying a single external supply voltage of 5V enables this drive to operate it is unnecessary to supply +3.3V and +12V power supplies.