DP83907  Product Folder

The DP83907 Twisted-Pair Enhanced Coaxial Network Interface Controller is a CMOS VLSI device designed for easy implementation of CSMA/CD local area networks.

Unique to the DP83907 is the integration of the entire bus interface for PCAT ISA (Industry Standard Architecture) bus based systems. Hardware and software selectable options allow the DP83907's bus interface to be configured in the same manner as an NE2000 Architecture. All bus drivers and control logic are integrated to reduce board cost and area.

Supported network interfaces include 10BASE5 or 10BASE2 Ethernet via an external transceiver connected to its AUl port, and Twisted-pair Ethernet® (10BASE-T) using the on-board transceiver. The DP83907 provides the Ethernet Media Access Control (MAC), Encode-Decode (ENDEC) with an AUl interface, and 10BASE-T transceiver functions in accordance with the lEEE 802.3 standards.

The DP83907's integrated 10BASE-T transceiver fully complies with the IEEE standard. This functional block incorporates the receiver, transmitter, collision, heartbeat, loopback, jabber, and link integrity blocks as defined in the standard. The transceiver when combined with equalization resistors, transmit/receive filters, and pulse transformers provides a complete physical interface from the DP83907's ENDEC module and the twisted pair medium.: (continued)

• Controller and integrated bus interface solution for IEEE 802.3, 10BASE5, 10BASE2, and 10BASE-T
• Software compatible with industry standard Ethernet Adapters: Novell®'s NE2000
• No external bus logic or drivers needed
• Supports jumpered or jumperless configuration
• Provides EEPROM interface for non-volatile storage of configuration data, user-defined data and Ethernet Physical Address
• Allows in-situ programming of EEPROM
• Integrated controller, ENDEC, and transceiver
• Full IEEE 802.3 compliant AUI interface
• Single 5V supply
  10BASE-T TRANSCEIVER MODULE:
• Integrates transceiver functionality
• Transmitter and receiver functions
• Collision detect, heartbeat and jabber
• Selectable link integrity test or link disable
• Polarity Detection/Correction
• Auto switch
• On chip filter
  ENDEC MODULE:
• 10 Mbit/s Manchester encoding/decoding
• Squelch on receive and collision pairs
  MAC/CONTROLLER MODULE:
• Software compatible with DP8390, DP83901, DP83902
• Efficient buffer management implementation
  IN-CIRCUIT TEST