HP PCI Multiplexer Family Cabling, Diagnostics, and Troubleshooting Manual

Overview
MUX Cards
Chapter 1 15
MUX Cards
The MUX card occupies a single PCI slot in the host computer and
provides the intelligent communications functions to “off-load” the CPU
serial communications processing tasks.
There are two types of MUX cards as listed in Table 1-1. The PCI MUX
8-port card has an eight port RJ-45 fan out cable. The PCI MUX 64-port
card supports 16 to 64 ports by using up to four external Port Modules,
ordered separately. Every MUX card has at least one SuperSerial
Processor (SSP). This RISC processor controls the flow of data through
multiple communications ports.
Table 1-1 HP PCI MUX Card Models
Order
Number
Description Interface
Maximum
Port Speed
A6748A PCI Mux 8 Card Fan Out Cable 230,400bps
A6749A PCI Mux 64 Card
(3.3V or 5V)
Port Module(s) 115.200bps