IEEE 802.3X & 802.3Y : 1997

Revisions to ISO/IEC 8802-3:1996
 [ANSI/IEEE Std 802.3, 1996 Edition]
1. (Changes to) Introduction
2. (Changes to) MAC service specification
3. (Changes to) Media access control frame structure
4. (Changes to) Media access control
6. (Changes to) PLS service specification
7. (Changes to) Physical signaling (PLS) and
    attachment unit interface (AUI) specifications
13. (Changes to) System considerations for multi-segment
    10 Mb/s baseband networks
14. (Changes to) Twisted-Pair Medium Type 10BASE-T
15. (Changes to) Fiber optic medium and common elements
    of medium attachment units and star, Type 10BASE-F
18. (Changes to) Fiber optic medium attachment unit,
    type 10BASE-FL
21. (Changes to) Introduction to 100 Mb/s baseband
    networks, type 100BASE-T
22. (Changes to) Reconciliation sublayer (RS) and
    Media Independent Interface (MII)
23. (Changes to) Physical Coding Sublayer (PCS),
    Physical Medium Attachment (PMA) sublayer and
    baseband medium, Type 100BASE-T
24. (Changes to) Physical coding sublayer (PCS) and
    Physical Medium Attachment (PMA) sublayer, Type
    100BASE-X
27. (Changes to) Repeater for 100 Mb/s baseband networks
28. (Changes to) Physical Layer link signaling for 10 Mb/s
    and 100 Mb/s Auto-Negotiation on twisted pair
29. (Changes to) System considerations for multi-segment
    100BASE-T networks
30. (Changes to) 10 Mb/s and 100 Mb/s management
31. MAC control
32. Physical coding sublayer (PCS), physical medium
    attachment (PMA) sublayer and baseband medium,
    Type 100BASE-T
ANNEX
(Changes to) Annex C (informative) - State Diagram, MAC
                     sublayer
(Changes to) Annex 28B (normative) - Physical Layer link
                       signaling for 10 Mb/s and 100 Mb/s
                       Auto-Negotiation on twisted pair
(Changes to) Annex 28C (normative) - Next Page Message
                       Code Field definitions
Annex 28D (normative) - Description of extensions to
          clause 28 and associated annexes
(Changes to) Annex 30A (normative) - GDMO specification
                       for 802.3 managed object classes
(Changes to) Annex 30B (normative) - GDMO and ASN.1
                       definitions for management
Annex 31A (normative) - MAC Control opcode assignments
Annex 31B (normative) - MAC Control PAUSE operation
Annex 32A (informative) - Use of cabling systems with
          nominal differential characteristic impedance
          of 120 omega or 150 omega

Gives two distinct modes of operation: half duplex and full duplex.