Specifications
DM9000CEP is a cost-effective single-chip 10/100Mbps Fast Ethernet controller manufactured by Davicom Semiconductor, integrating complete IEEE 802.3 compliant MAC and PHY transceiver in one compact LQFP package. It features a universal SRAM-style 8/16-bit host bus interface for seamless connection with all mainstream MCUs, MPUs, DSPs and FPGAs, widely adopted for low-to-medium speed embedded network equipment.
👉 It is not industrial wide-temperature DM9000CIEP variant, nor high-end multi-port Ethernet switch chip. It is a mature, simplified single-port Fast Ethernet solution with rich built-in hardware acceleration and low-power modes, perfect for cost-sensitive embedded network terminals without complex external circuit design.
Key Features
- Integrated 10/100Mbps MAC + PHY Transceiver
- Fully compliant with IEEE 802.3 (10BASE-T) and IEEE 802.3u (100BASE-TX) standards
- Auto-negotiation for automatic speed (10/100M) and duplex (full/half) matching
- Built-in HP Auto-MDIX function, eliminates manual TX/RX cable crossover adjustment
- Supports 100Mbps fiber optical interface via external transformer for long-distance transmission
- IEEE 802.3x full-duplex flow control; half-duplex backpressure congestion suppression
- Universal Host Processor Interface
- Dual-mode 8-bit / 16-bit SRAM-like asynchronous bus, compatible with 8/32-bit embedded microcontrollers
- 5V-tolerant I/O pins under nominal 3.3V core supply, fits legacy 5V mainboard designs
- Independent interrupt output pin for packet receive/transmit event notification
- Built-in 16KB on-chip SRAM as transmit & receive FIFO buffer to reduce MCU bandwidth occupation
- Hardware Acceleration & Network Functions
- Hardware TCP/IP/UDP checksum generation and verification to offload main processor calculation load
- Multicast address filtering and programmable MAC address lookup table
- Remote wake-up (WoL) support via magic packet, link state change and custom wake frames
- Early transmit function reduces packet transmission latency for real-time industrial communication
- Configuration & Power Management
- Optional EEPROM interface to auto-load MAC address, vendor ID and chip configuration after power-up
- Multiple low-power energy-saving modes: cable detection power-reduction, deep power-down suspend
- Programmable LED drivers for link status, data activity indicator lights
- Integrated internal 3.3V-to-1.8V LDO regulator, fewer external discrete power components
- Electrical, Package & Environmental Specs
- Operating supply voltage: 3.135V ~ 3.465V (nominal 3.3V)
- Commercial temperature grade: 0°C ~ +70°C operating range
- Package: 48-pin 7×7mm LQFP surface mount, tape-and-reel packaging for mass SMT production
- RoHS lead-free compliant, stable long-term mass production supply
Typical Applications
Industrial PLC, servo drive and frequency converter Ethernet data communication modules
Embedded industrial HMI touch screens, digital signage network interface boards
Wireless IoT gateways, environmental monitoring sensor wired network transmission
Portable test & measurement instruments, oscilloscope data upload network cards
Medical diagnostic equipment real-time data transmission terminals
Smart home central controllers, smart access control network modules
Small serial-Ethernet protocol converters, RS485 to TCP/IP gateway devices
Education electronic experiment platforms, single-board computer Ethernet expansion
POS payment terminals, self-service retail kiosk network communication boards
Low-cost mini embedded network cameras and video monitoring equipment
LXB Semicon supplies original Davicom DM9000CEP single-chip 10/100Mbps Ethernet controller IC
