SLVSM71 November   2026 DP83C8512

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 DP83C8512x Device Comparison
  6. 5 Pin Configuration and Function
    1. 5.1 Pin Configuration and Functions (DP83C8512xM)
    2. 5.2 Pin Configuration and Functions (DP83C8512xRL)
    3. 5.3 Pin Configuration and Functions (DP83C8512xRF)
  7. 6 Specifications
    1. 6.1 Thermal Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Auto-Negotiation (Speed/Duplex Selection)
      2. 7.3.2  Auto-MDIX Resolution
      3. 7.3.3  Energy Efficient Ethernet
        1. 7.3.3.1 EEE Overview
        2. 7.3.3.2 EEE Negotiation
      4. 7.3.4  EEE for Legacy MACs Not Supporting 802.3az
      5. 7.3.5  Wake-on-LAN Packet Detection
        1. 7.3.5.1 Magic Packet Structure
        2. 7.3.5.2 Magic Packet Example
        3. 7.3.5.3 Wake-on-LAN Configuration and Status
      6. 7.3.6  Low-Power Modes
        1. 7.3.6.1 Active Sleep
        2. 7.3.6.2 IEEE Power-Down
        3. 7.3.6.3 Deep Power Down State
      7. 7.3.7  Clock Output
      8. 7.3.8  Media Independent Interface (MII)
      9. 7.3.9  Reduced Media Independent Interface (RMII)
      10. 7.3.10 RMII Repeater Mode
      11. 7.3.11 Serial Management Interface
        1. 7.3.11.1 Extended Register Space Access
        2. 7.3.11.2 Write Address Operation
        3. 7.3.11.3 Read Address Operation
        4. 7.3.11.4 Write (No Post Increment) Operation
        5. 7.3.11.5 Read (No Post Increment) Operation
        6. 7.3.11.6 Example Write Operation (No Post Increment)
      12. 7.3.12 100BASE-TX
        1. 7.3.12.1 100BASE-TX Transmitter
          1. 7.3.12.1.1 Code-Group Encoding and Injection
          2. 7.3.12.1.2 Scrambler
          3. 7.3.12.1.3 NRZ to NRZI Encoder
          4. 7.3.12.1.4 Binary to MLT-3 Converter
        2. 7.3.12.2 100BASE-TX Receiver
      13. 7.3.13 10BASE-Te
        1. 7.3.13.1 Squelch
        2. 7.3.13.2 Normal Link Pulse Detection and Generation
        3. 7.3.13.3 Jabber
        4. 7.3.13.4 Active Link Polarity Detection and Correction
      14. 7.3.14 Loopback Modes
        1. 7.3.14.1 Near-end Loopback
        2. 7.3.14.2 MII Loopback
        3. 7.3.14.3 PCS Loopback
        4. 7.3.14.4 Digital Loopback
        5. 7.3.14.5 Analog Loopback
        6. 7.3.14.6 Far-End (Reverse) Loopback
      15. 7.3.15 BIST Configurations
      16. 7.3.16 LED and GPIO Configuration
    4. 7.4 DP83C8512x Configuration
      1. 7.4.1 Hardware Bootstraps Configuration
        1. 7.4.1.1 DP83C8512x Hardware Configurations
  9. 8 DP83C8512x Registers
    1. 8.1 DP83C8512Fx Registers
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Twisted-Pair Interface (TPI) Network Circuit
      2. 9.2.2 Transformer Recommendations
      3. 9.2.3 Capacitive DC Blocking
      4. 9.2.4 Design Requirements
        1. 9.2.4.1 Clock Requirements
          1. 9.2.4.1.1 Oscillator
          2. 9.2.4.1.2 Crystal
      5. 9.2.5 Detailed Design Procedure
        1. 9.2.5.1 MII Layout Guidelines
        2. 9.2.5.2 RMII Layout Guidelines
        3. 9.2.5.3 MDI Layout Guidelines
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
        1. 9.4.1.1 Signal Traces
        2. 9.4.1.2 Return Path
        3. 9.4.1.3 Transformer Layout
        4. 9.4.1.4 Metal Pour
        5. 9.4.1.5 PCB Layer Stacking
          1. 9.4.1.5.1 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • RHB|32
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.4.1.1 DP83C8512x Hardware Configurations

This section describes the hardware configuration available for DP83C8512x'. If no strap resistors are implemented, the default value is Odd Nibble Enabled, MII mode, FLD disabled. '0' corresponds to Mode 0 while '1' corresponds to Mode 1.

The FLD feature is only supported on DP83C8512xM. DP83C8512xRL and DP83C8512xRF do not support FLD.

Table 7-6 DP83C8512xM Hardware Configuration
PIN NAME PIN NO. DEFAULT MODE FUNCTION
LED0 24 0 PHY_ADDR
0 0
1 1
LED1/CLKOUT 25 1 0 Real-time Ethernet
1 Standard Ethernet
RX_D3 12 0 0 Disable FLD
RX_CLK 13 1 Enable FLD
RX_ER 28 0 0 CLKOUT 25MHz on Pin 25
1 LED1 on Pin 25
Note: In MII mode, PHY_ADDR is either 0 to 1 depending on the LED0 strapping.
Table 7-7 DP83C8512xRL Hardware Configuration
PIN NAME PIN NO. DEFAULT MODE FUNCTION
LED0 24 0 PHY_ADDR
0 0
1 1
RMII_EN 8 0 1 RMII Enable
RX_ER/LED1_EN 28 0 0 CLKOUT 25MHz on Pin 25
1 LED1 on Pin 25
Table 7-8 DP83C8512xRF Hardware Configuration
PIN NAME PIN NO. DEFAULT MODE FUNCTION
LED0 24 0 PHY_ADDR
0 0
1 1
RMII_EN 8 0 1 RMII Enable
RF_EN 12 0 1 RF Enable
RX_ER/LED1_EN 28 0 0 CLKOUT 25MHz on Pin 25
1 LED1 on Pin 25
Note: In RMII Leader and Follower mode, PHY_ADDR is either 2 or 3 depending on the LED0 strapping.
Note: Both RX_D3 and RX_CLK must be pulled high to enable FLD.

RX_ER and RX_ER/LED1_EN are latched at POR only. HW reset does not re-latch this strap.