Technical information

2.2.12 TQK70 Controller
The TQK70 controller module provides the interface between the TK70 tape
drive and the Q22-bus.
Functional Information
Controller protocol
Supported drive
Drives
per controller
Drive
interconnect
Controllers per system
Ordering Information
TQK70-AA
Performance
Data throughput rate
ReadlWrite data transfers
Buffer size
Configuration Information
Form factor
Power requirements
Power consumption
Bus loads
Related Documentation
EK-OTK70-0M
TMSCP
TK70
1
Direct
1 maximum
Controller for TK70E-AF
125 Kbytes/second
Up to 16-word burst mode DMA, truncated to 8-
word burst mode if another device is requesting
the bus
64 Kbytes
Dual height
+5 Vdc, 3.5 A
+12
Vdc, 0.0 A
17.5W
4.3 ac
0.5 dc
TK70 Tape Drive Subsystem Owner's
Manual
2-18 VAX 4000 Model 300 Technical Information