Technical information

2.4.5 DRQ38 Parallel Interface
The DRQ3B is a high-speed parallel interface that provides two
independent I6-hit, unidirectional data channels.
Functional Information
Two unidirectional channels
Interrupt vectors
Ordering Information
DRQ3B-SF
Cables
Performance
Throughput rates
Configuration Information
Form factor
Power requirements
Power consumption.
Bus loads
Module connectors
1/0 port data transceivers
Each 512-word FIFO
One for both DMA channels
One for all other interrupts
Field-installed kit
Used to connect the DRQ3B to a user device or to
another DRQ3B. Order two cables for each DRQ3B
module.
• BC19T-25: 7.6 m (25 ft)
• BC19T-50: 15.2 m (50 ft)
Burst: 500 kilowords
Block: 1.1 megawords
Extended block mode: 1.1 megawords
Height speed: 1.4 megawords
Quad height
+ 5 Vdc, 4.5 A
+12 Vdc,
0.0 A
22.5 W
2.0 ac
0.5 dc
Two 50-pin female IEEE connectors
Source
16 mA, sink 64 mA
Option Specifications 2-51