[802.3_EMS] 802.3dt D1.0 comments #19, #42, #81

Thread Links	Date Links
Thread Prev	Thread Next	Thread Index	Date Prev	Date Next	Date Index

Thread Links

Date Links

Thread Prev

To: STDS-802-3-EMS@xxxxxxxxxxxxxxxxx

Subject: [802.3_EMS] 802.3dt D1.0 comments #19, #42, #81

From: Eugene Opsasnick <000019ebd4366f61-dmarc-request@xxxxxxxxxxxxxxxxx>

Date: Tue, 27 Oct 2026 14:54:45 -0700

Arc-authentication-results: i=1; mx.google.com; dkim=pass header.i=@broadcom.com header.s=google header.b=QNaP48lO; spf=pass (google.com: domain of eugene.opsasnick@xxxxxxxxxxxx designates 209.85.220.97 as permitted sender) smtp.mailfrom=eugene.opsasnick@xxxxxxxxxxxx; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=broadcom.com; dara=neutral header.i=@listserv.ieee.org

Arc-message-signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20260327; h=to:subject:message-id:date:from:mime-version:dkim-signature; bh=9aTe8eCp1aWRjSOIwiyymUta/NnlGU1QdYLW5MqLVqM=; fh=YO41XG2Fo5W/KNALXG2N2lQQkFbyAG0Hb6rG7hDXlyo=; b=qv168aYi34IvFXwgptC+gQxyF03Z7ExdE8yJ3WSk/3lpuMVG7gOwCuGVVYjCo/3UDd RDDKRz9dCtTJxNLFXRus+6qHjxuYh+oacvpSua1EBfdBOzQJn/BBuc6gr0anuY/9lNC8 hXtn1MsAAmEjAX2iha31ozE9qFedS0Q5Cmr6pRImufGkq95ptvACffd+1DC5f3bN4hEt i47sYtA1YE4k5iRNFUYtsIKjrPwPo/Jki0Tijghba4H5Wk5jk/tvXP5maDmSyvUwfhfW LqlFb6qFSEa784YReDKOgpvkbUDmnD7wafLotIoJMMTPU7Xiu1BvGgkiZAsCIIA6Cc12 Lm6g==; dara=google.com

Arc-seal: i=1; a=rsa-sha256; t=1793138117; cv=none; d=google.com; s=arc-20260327; b=NsKj9tPfBbQDUsgFJXl4d/3nE6T0bTNwz+V/sPeM+aqzCTeyvTWaeHztnD0nul3yzw J1pqFshwjBAjr1vkRXJhaZYtGBaU2oZ6kVoUHM7FOUSf1P1o2BjeL+Kvf1IwqT3oYqQ2 GpJQyawfNTWJluAQgHDw2PJswTHeNzVNnRjcMzMXWZUdfAUvhTyBDEEzNPPoW2Z20F7+ MrUYzN9KB9nlg9dKIZC5bNhVfbRaevlI3SRTjWC51djZ40nhHcu/wVDsquuuabwIN8CB 4ibE7PBf4RT2oNWTKNPK/+SNAqRQ3G0sAcpFWQGMiGtTtchjI+Irwq0cgU/20115+JIG 4KcQ==

Delivered-to: mhonarc@xxxxxxxxxxxxxxxx

Delivered-to: STDS-802-3-EMS@xxxxxxxxxxxxxxxxx

List-help: <mailto:LISTSERV@LISTSERV.IEEE.ORG?body=INFO%20STDS-802-3-EMS>

List-owner: <mailto:STDS-802-3-EMS-request@LISTSERV.IEEE.ORG>

List-subscribe: <mailto:STDS-802-3-EMS-subscribe-request@LISTSERV.IEEE.ORG>

List-unsubscribe: <mailto:STDS-802-3-EMS-unsubscribe-request@LISTSERV.IEEE.ORG>

Reply-to: Eugene Opsasnick <eugene.opsasnick@xxxxxxxxxxxx>

David,

Thank you for your thoughts regarding comment #13. Since you will not be able to attend tomorrow's meeting, I have a question for you regarding "idle time" and "IDLE control characters" which are the subject of comments #19, #42, and #81.

195.4.1.2 states:

"If the EMS_LM.request is received during idle, the gRS shall insert a control ordered set in place of an IDLE block on the xMII transmit path".

Gary, Viet and I looked closely at your initial contribution regarding the PLS service interface between the MAC and the RS. (www..ieee802.org/3/public/26_03/). After reading it and Clause 81 and Clause 6 again, we understand that the MAC TX does not send "IDLE characters" to the RS. There is "idle time" between packets transmitted by the MAC and "idle time" also when there are no packets for the MAC to transmit. It is the RS that inserts IDLE control characters (in Terminate and Idle control blocks) on the xMII.

The PLS_DATA.request can have one of three values: ONE, ZERO or DATA_COMPLETE. ONE or ZERO represents a single data bit. The DATA_COMPLETE value signifies that the MAC sublayer has no more data to output.

Our understanding is that the value must transition to DATA_COMPLETE at the end of a packet transmission. And the next transition to ONE indicates the start of the next packet (The first bit of the preamble). There are no "IDLE" values transmitted from the MAC to the RS.

Is this correct?

If so, then the statement in 195.4.1.2 ".... received during idle, ..." simply means when the MAC is not transmitting data to the RS.

Thanks,

--- Eugene O.

To unsubscribe from the STDS-802-3-EMS list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-3-EMS&A=1

Attachment: smime.p7s
Description: S/MIME Cryptographic Signature