Published SFF-8639 Rev 1.6
Multifunction 12 Gb/s 6X Unshielded Connector Page 19
5. Signal Assignments
5.1 Contact Numbering Scheme
The contact numbering scheme is an extension of the contact numbering schemes
defined in SFF-8482, SFF-8680, and SFF-8630. Figure 5-1 shows the contact numbering
for a fully populated version of an SFF-8639 connector. The contact numbering
started with the contacts defined in SFF-8482 (P1 - P15 and S1 - S14). The numbering
scheme was extended to cover the use case of a SAS MultiLink connector (S15 - S28)
as defined in SFF-8630. Additional contacts (E1 - E25) were added to cover the use
case of a 4 lane PCIe connector.
FIGURE 5-1 CONTACT NUMBERING SCHEME
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