Datasheet
Table Of Contents
- Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
- 1.0 Introduction
- 2.0 Pin Description and Configuration
- 3.0 Functional Description
- 3.1 Transceiver
- 3.2 Auto-negotiation
- 3.3 HP Auto-MDIX Support
- 3.4 MAC Interface
- 3.5 Serial Management Interface (SMI)
- 3.6 Interrupt Management
- 3.7 Configuration Straps
- 3.8 Miscellaneous Functions
- 3.9 Application Diagrams
- 4.0 Register Descriptions
- 4.1 Register Nomenclature
- 4.2 Control and Status Registers
- TABLE 4-2: SMI Register Map
- 4.2.1 Basic Control Register
- 4.2.2 Basic Status Register
- 4.2.3 PHY Identifier 1 Register
- 4.2.4 PHY Identifier 2 Register
- 4.2.5 Auto Negotiation Advertisement Register
- 4.2.6 Auto Negotiation Link Partner Ability Register
- 4.2.7 Auto Negotiation Expansion Register
- 4.2.8 Mode Control/Status Register
- 4.2.9 Special Modes Register
- 4.2.10 Symbol Error Counter Register
- 4.2.11 Special Control/Status Indications Register
- 4.2.12 Interrupt Source Flag Register
- 4.2.13 Interrupt Mask Register
- 4.2.14 PHY Special Control/Status Register
- 5.0 Operational Characteristics
- 6.0 Package Information
- 7.0 Application Notes
- Appendix A: Data Sheet Revision History
- The Microchip Web Site
- Customer Change Notification Service
- Customer Support
- Product Identification System
- Worldwide Sales and Service
LAN8720A/LAN8720AI
DS00002165B-page 54 2016 Microchip Technology Inc.
5.3.2 REF_CLK OUT MODE
TABLE 5-2: DEVICE ONLY CURRENT CONSUMPTION AND POWER DISSIPATION (REF_CLK
OU
T MODE)
Power Pin Group
VDDA3.3
Power
Pins(mA)
VDDCR
Power
Pin(mA)
VDDIO
Power
Pin(mA)
Total
Cur
rent
(mA)
Total
Power
(mW)
100BASE-T /w traffic
Max 28 20 6.3 54 179
Typical 26 19 5.8 50 164
Min 22 15 2.9 39 93
Note 5-11
10BASE-T /w traffic
Max 9.9 13 6.4 30 96
Typical 8.8 12 5.6 26 85
Min 7.1 10 3.0 20 41
Note 5-11
Energy Detect Power Down
Max 4.5 2.7 0.3 7.5 25
Typical 4.0 1.5 0.2 5.7 19
Min 3.9 1.2 0 5.1 15
Note 5-11
General Power Down
Max 0.4 2.5 0.2 3.1 10.2
Typical 0.4 1.3 0.2 1.9 6.3
Min 0.4 1.0 0 1.4 2.5
Note 5-11
.
Note 5-9 The current at VDDCR is either supplied by the internal regulator from current entering at VDD2A,
or from an external 1.2V supply when the internal regulator is disabled.
Note 5-10 Cu
rrent measurements do not include power applied to the magnetics or the optional external LEDs.
The Ethernet component current is typically 41mA in 100BASE-TX mode and 100mA in 10BASE-T
mode, independent of the 2.5V or 3.3V supply rail of the transformer.
Note 5-11 Ca
lculated with full flexPWR features activated: VDDIO=1.8V & internal regulator disabled.