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Dear Sir, Regarding EEE spec. in 802.3bj draft standard document (D2.3), We have some issues to be clarified as following : In P802.3bj/D2.3 draft, 83A.3.4.7 (Global energy detect function) has the following description: “If no energy is being received on the XLAUI/CAUI for the ingress direction SIGNAL_DETECT is set to FAIL following a transition from rx_mode = DATA to rx_mode = QUIET.” We think it means SIGNAL_DETECT should be set FAIL if both “no energy” and “rx_mode = DATA to rx_mode = QUIET” are true. But in LPI Receive state diagram (Figure 82–17), it defines state machine from RX_SLEEP to RX_QUIET must meet “!rx_align_status”, and not considering “no energy”. When RX in RX_SLEEP state, if received signals is not aligned but energy still be detected, the RX state machine should go to RX_QUIET according to the state diagram. We are confused between this and the above description of 83A.3.4.7.
Should we add “no energy input” into the criteria for state from RX_SLEEP to RX_QUIET? Please comment. Thanks. Regards, Vincent Vincent (WenCheng) Tseng
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