Instruction manual

ACU-1000 Operations Manual
5-2 Interoperability Now
5.5 CPM-4 Control Processor Module
The ACU-1000 Control Processor Module has an MCF5272 Coldfire processor with 1
MB of flash EPROM that stores the operating software for the ACU and controls the
entire chassis via an internal high-speed serial bus. It requests and receives status and
information from each module and sends commands to each module, and instructs
modules to connect to one or more of the sixteen audio buses on the ACU backplane.
The CPM-4 provides both an Ethernet port and a RS-232 serial port allowing
programming and monitoring of all ACU-1000 functions via the Ethernet, or a serially
interfaced console. The front panel of the CPM-4 Module contains a Handset jack, an
Ethernet jack, a Fault LED, along with Master and Expansion LEDs that indicate the
unit’s status in an expanded system.
The CPM-4 with Ethernet port allows remote programming and configuration access
plus full compatibility with the WAIS controller.
The CPM-2 was the predecessor to the CPM-4 and is no longer in production. CPM-2
was equipped with only a serial control and configuration port and had no network
capabilities.
5.6 HSP-2A Handset/Speaker Module
5.6.1 General Description HSP-2A
The HSP-2A Module provides a means to locally monitor, configure and control an
ACU-1000 system. The user can monitor audio via an internal speaker, or plug in
external headphones or use the handset that comes with the HSP-2A. The handset
includes a PTT switch so the user can key an associated radio from the HSP-2A.
Module control and configuration is via a 3x4 keypad (standard telephone layout),
which enables the user to select a module in the system and enter control/configuration
data. For example, if the system contains a PSTN-2 module, the user may place
telephone calls manually using the HSP-2A keypad and handset.
In addition to the front-panel handset and phones jacks, the HSP-2A has an audio line (0
dBm nominal) input and output, and external microphone input and external speaker
output. There are three uncommitted auxiliary parallel inputs and three uncommitted
auxiliary parallel outputs.
5.6.2 Block Diagram Description HSP-2A
(Refer to Figure 5-1 HSP-2A Block Diagram)
The HSP-2A contains its own microprocessor (U30) that does all of the local control of
the module. It communicates with the system’s CPM-4 module over the control and
data buses on the main chassis backplane via I/O latches and drivers U16 through U18.
The microprocessor referred to in this description is the local one on the HSP-2A
module.