LXT971ABC datasheet(71/90 Pages) INTEL

71 / 90 page

LXT971A 3.3V Dual-Speed Fast Ethernet Transceiver

Datasheet

Document #: 249414

Revision #: 002

Rev. Date: August 7, 2002

6.0

The LXT971A register set includes multiple 16-bit registers. Table 41 presents a complete register

listing. Table 42 is a complete memory map of all registers and Tables 43 through 58 provide

individual register definitions.

Base registers (0 through 8) are defined in accordance with the “Reconciliation Sublayer and

Media Independent Interface” and “Physical Layer Link Signaling for 10/100 Mbps Auto-

Negotiation” sections of the IEEE 802.3 standard.

Additional registers are defined in accordance with the IEEE 802.3 standard for adding unique chip

functions.

Table 41. Register Set

Address

Bit Assignments

Control Register

Refer to Table 43 on page 74

Status Register #1

Refer to Table 44 on page 75

PHY Identification Register 1

Refer to Table 45 on page 76

PHY Identification Register 2

Refer to Table 46 on page 76

Auto-Negotiation Advertisement Register

Refer to Table 47 on page 77

Auto-Negotiation Link Partner Base Page Ability Register

Refer to Table 48 on page 78

Auto-Negotiation Expansion Register

Refer to Table 49 on page 79

Auto-Negotiation Next Page Transmit Register

Refer to Table 50 on page 79

Auto-Negotiation Link Partner Received Next Page Register

Refer to Table 51 on page 80

1000BASE-T/100BASE-T2 Control Register

Not Implemented

1000BASE-T/100BASE-T2 Status Register

Not Implemented

Extended Status Register

Not Implemented

Port Configuration Register

Refer to Table 52 on page 81

Status Register #2

Refer to Table 53 on page 82

Interrupt Enable Register

Refer to Table 54 on page 83

Interrupt Status Register

Refer to Table 55 on page 84

LED Configuration Register

Refer to Table 56 on page 85

21-25

Reserved

–

Digital Config Register

Refer to Table 57 on page 86

27-29

Reserved

–

Transmit Control Register

Refer to Table 58 on page 87

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