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Colleagues,
At
comment resolution discussion yesterday, I suggested reviewing Figure 168–10—PMA functional block diagram and
https://www.ieee802.org/3/da/public/0124/diminico_SPMD_01_1224.pdf
as basis for resolving a number of TCI comments; please note Figure 168–1 also
applies, depicting the TCI as an MDI for the shared transmission medium (single
balanced pair of conductors).
On slide 7 https://www.ieee802.org/3/da/public/0124/diminico_SPMD_01_1224.pdf the intent was to suggest changes to IEEE P802.3da™/D1.0;
(1)>>Change text under 168.8 TCI specification line 34-36;
From: >>Each TCI has one interface facing each direction of the mixing segment (TC1 and TC2), and a four-wire interface facing the PMA (and any associated stub or service loop) (TC3) as shown in Figure 168–18.
To: Each TCI has one interface facing each direction of the mixing segment (TC1 and TC2), and a two-wire interface facing the PMA as shown in Figure (see figure slide 7).
(2)>>Change text under 168.8 TCI specification line 8-11;
From: The mixing segment shall be a linear topology, with DTE attached at a TCI, where each TCI has two interfaces on the mixing segment, one interface facing in the direction of left edge termination of the mixing segment (TC1), and one facing in the direction of the right edge termination of the mixing segment (TC2), and a four-wire interface facing the PMA (and any associated stub or service loop) (TC3) (see Figure 168–18).
Changing to two-wire and removing service loops which can be implemented in trunk without calling it a TCI (four-wire)…
To: The mixing segment shall be a linear topology, with DTE attached at a TCI, where each TCI has two interfaces on the mixing segment, one interface facing in the direction of left edge termination of the mixing segment (TC1), and one facing in the direction of the right edge termination of the mixing segment (TC2), and a two-wire interface facing the PMA (and any associated stub) (TC3) (see Figure slide 7).
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