Highly-Integrated Fast Ethernet Controllers & PHYs
DAVICOM Semiconductor Inc. is a Taiwanese semiconductor company specializing in Ethernet controller and PHY chip design. The DM9000/DM9051 series is widely used in the embedded Linux community (u-boot, Linux kernel) and is the mainstream Ethernet chip choice for mid-range industrial boards and ARM SoC development boards.
Official WebsiteDM9051 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.
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.