Functionally, the adapters are similar: the differences being in
the connecting cables and plugs, and the straps on the printed
circuit board. The 2651 programmable communications integrated
circuit supports many serial data communication disciplines in full
or half-duplex mode. The interface is capable of transmission rates
from 50 to 19200 baud.
The pin assignments for the I/O bus connector are shown in
Figure 2.38. These signals match those of the I/O bus and are
defined in the I/O bus description in this manual. The differences
in the cables are shown in Figure 2.39.
Figure 2.38 RS-232C pin assignments
2-58
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