DM9051 is a DAVICOM single-chip 10/100M Fast Ethernet controller with an SPI interface, eliminating the need for 8/16-bit parallel bus and greatly simplifying hardware design. Features 16KB SRAM TX/RX buffer, full-duplex flow control, and native Linux kernel driver support — ideal for network expansion on ARM or RISC-V MCU systems.
| Host Interface | SPI (up to 25 MHz) |
| Buffer Memory | 16KB SRAM |
| Speed | 10/100 Mbps |
| MAC | Integrated |
| PHY | Integrated |
| Supply Voltage | 3.3V |
| Package | QFN48 |
| OS Support | Linux, u-boot |
DM9000A is a well-established Ethernet controller familiar to the embedded Linux community, using an 8/16-bit parallel ISA-like interface. Mature drivers exist for ARM9/ARM11 platforms (Samsung S3C series), with u-boot and Linux kernel native support — commonly found on industrial embedded boards and SoC evaluation boards.
DM9161A is a DAVICOM single-port 10/100M Fast Ethernet PHY that connects to a MAC via MII/RMII interface, supporting Auto-Negotiation and MDI/MDI-X. Suitable for designs requiring a discrete MAC/PHY architecture — commonly paired with FPGA or SoC integrated MACs.
