DM9000 ISA to Ethernet MAC Controller with Integrated 10/100 PHY

The DM9000 is a fully integrated and cost-effective single chip Fast Ethernet MAC controller with a general processor interface, a 10/100M PHY and 4K Dword SRAM. It is designed with low power and high performance process that support 3.3V with 5V tolerance. The DM9000 also provides a MII interface to connect HPNA device or other transceivers that support MII interface.

• Supports processor interface: byte/word/dword of I/O command to internal memory data operation
• Integrated 10/100M transceiver
• Supports MII and reverses MII interface
• Supports back pressure mode for half-duplex mode flow control
• IEEE802.3x flow control for full-duplex mode
• Supports wakeup frame, link status change and magic packet events for remote wake up
• Integrated 4K dword SRAM
• Supports automatically load vendor ID and product ID from EEPROM
• Supports 4 GPIO pins
• Optional EEPROM configuration

• Very low power consumption mode:
  – Power reduced mode (cable detection)
  – Power down mode
  – Selectable TX drivers for 1:1 or 1.25:1 transformers for additional power reduction.
• Compatible with 3.3V and 5.0V tolerant I/O
• 100-pin LQFP with CMOS process

The DM9000 supports 8-bit, 16-bit and 32-bit uP interfaces to internal memory accesses for different processors. The PHY of the DM9000 can interface to the UTP3, 4, 5 in 10Base-T and UTP5 in 100Base-TX. It is fully compliant with the IEEE 802.3u Spec. Its auto-negotiation function will automatically configure the DM9000 to take the maximum advantage of its abilities. The DM9000 also supports IEEE 802.3x full- duplex flow control. This programming of the DM9000 is very simple, so user can port the software drivers to any system easily.