Datasheet
Table Of Contents
- 1.0 Introduction
- 2.0 Pin Description and Configuration
- 3.0 Functional Description
- 3.1 10BASE-T/100BASE-TX Transceiver
- 3.2 RMII Interface
- 3.3 Back-to-Back Mode – 100 Mbps Copper Repeater
- 3.4 MII Management (MIIM) Interface
- 3.5 Interrupt (INTRP)
- 3.6 HP Auto MDI/MDI-X
- 3.7 Loopback Mode
- 3.8 LinkMD® Cable Diagnostic
- 3.9 NAND Tree Support
- 3.10 Power Management
- 3.11 Reference Circuit for Power and Ground Connections
- 3.12 Typical Current/Power Consumption
- 4.0 Register Descriptions
- 5.0 Operational Characteristics
- 6.0 Electrical Characteristics
- 7.0 Timing Diagrams
- 8.0 Reset Circuit
- 9.0 Reference Circuits — LED Strap-In Pins
- 10.0 Reference Clock - Connection and Selection
- 11.0 Magnetic - Connection and Selection
- 12.0 Package Outline
2016 Microchip Technology Inc. DS00002199A-page 29
KSZ8081RNA/RND
5.14 Acknowledge 1 = Link code word received from partner
0 = Link code word not yet received
RO 0
5.13 Remote Fault 1 = Remote fault detected
0 = No remote fault
RO 0
5.12 Reserved Reserved RO 0
5.11:10 Pause [00] = No pause
[10] = Asymmetric pause
[01] = Symmetric pause
[11] = Asymmetric and symmetric pause
RO 00
5.9 100Base-T4 1 = T4 capable
0 = No T4 capability
RO 0
5.8 100Base-TX
Full-Duplex
1 = 100Mbps full-duplex capable
0 = No 100Mbps full-duplex capability
RO 0
5.7 100Base-TX
Half-Duplex
1 = 100Mbps half-duplex capable
0 = No 100Mbps half-duplex capability
RO 0
5.6 10Base-T
Full-Duplex
1 = 10Mbps full-duplex capable
0 = No 10Mbps full-duplex capability
RO 0
5.5 10Base-T
Half-Duplex
1 = 10Mbps half-duplex capable
0 = No 10Mbps half-duplex capability
RO 0
5.4:0 Selector
Field
[00001] = IEEE 802.3 RO 0_0001
Register 6h - Auto-Negotiation Expansion
6.15:5 Reserved Reserved RO 0000_0000_000
6.4 Parallel
Detection
Fault
1 = Fault detected by parallel detection
0 = No fault detected by parallel detection
RO/LH 0
6.3 Link Partner
Next Page
Able
1 = Link partner has next page capability
0 = Link partner does not have next page capability
RO 0
6.2 Next Page
Able
1 = Local device has next page capability
0 = Local device does not have next page capabil-
ity
RO 1
6.1 Page
Received
1 = New page received
0 = New page not received yet
RO/LH 0
6.0 Link Partner
Auto-Negoti-
ation Able
1 = Link partner has auto-negotiation capability
0 = Link partner does not have auto-negotiation
capability
RO 0
Register 7h - Auto-Negotiation Next Page
7.15 Next Page 1 = Additional next pages will follow
0 = Last page
RW 0
7.14 Reserved Reserved RO 0
7.13 Message
Page
1 = Message page
0 = Unformatted page
RW 1
7.12 Acknowl-
edge2
1 = Will comply with message
0 = Cannot comply with message
RW 0
7.11 Toggle 1 = Previous value of the transmitted link code
word equaled logic 1
0 = Logic 0
RO 0
TABLE 4-2: REGISTER DESCRIPTIONS (CONTINUED)
Address Name Description
Mode
Note 4-1
Default