Sunhsi/S Serial Channels; Sunhsi/S-To-Sbus Interface; Aggregate Bandwidth; Power Consumption - Sun Microsystems SunHSI/S 3.0 Installation And Administration Manual

SunHSI/S Serial Channels

The four serial channels of the SunHSI/S adapter conform to the RS-449
specification for type SR interface circuits. Loopback connectors and test software
are provided to verify correct operation of the interface. The SunHSI/S adapter ports
are all DTE-type. The optional features for remote and local modem loopback testing
as specified by the RS-449 specification are not implemented.
For ease of interface to T1 circuits, each channel can invert its transmitted and
received data as well as its transmitted and received clocks (see Appendix B). The
inversion is performed under software control. Additionally, all channels can
provide their own internal clocks under software control. Internal clocks are
adjustable in standard baud rate increments from 300 bps to 2.048 Mbps, under
software control. Appendix B also lists the restrictions for using the SunHSI/S
adapter with T1 links.

SunHSI/S-to-SBus Interface

The SunHSI/S-to-SBus interface is a slave interface and can be installed in any
vacant SBus slot.

Aggregate Bandwidth

The aggregate bandwidth of the SunHSI/S adapter is 2.5 Mbps (full-duplex). This
implies that you can run one port at T1 (1.536Mbps) or CEPT (2.048 Mbps) speed.

Power Consumption

The SunHSI/S adapter consumes about 8.0 watts or 1.6 Amps at 5 VDC.
4 SunHSI/S Installation and Administration Guide • November 1998