Vax 4000 Model 200 Informations techniques Page 70

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2.3.4 DESQA Ethernet Controller
The DESQA Ethernet controller provides a high-speed asynchronous
connection between a Q22-bus system and a Local Area Network (LAN)
based on Ethernet or IEEE 802.3. The DESQA supports either standard
or ThinWire Ethernet cabling.
Functional Information
Supported protocols Ethernet, IEEE 802.3
Maintenance Operation Protocol (MOP)
Ordering Information
DESQA–SF DESQA field-installed kit
External cable (standard) BNE3B or BNE3D
External cable (ThinWire) BC16M
Performance
Transmit/Receive data transfers Up to 32-byte block mode DMA
Transmit data transfers 2-Kbyte FIFO for DMA transfers
Receive data transfers 4-Kbyte FIFO for DMA transfers
Throughput at maximum rate 10 Mbits/second
Configuration Information
Form factor Quad height
Power requirements +5 Vdc, 2.4 A; +12 Vdc, 0.22 A
Power consumption 14.64 W
Bus loads 2.2 ac; 0.5 dc
Module connectors (standard) One 15-pin D-type
Module connectors (Thinwire) T-connector to BNC connector on DESQA
Related Documentation
EK–DESQA–TM DESQA Technical Manual
Option Specifications 2–47
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