TDT RZ2 Manual page 158

3-26
distributed across multiple processors and enables data to be transferred to the PC
quickly and efficiently. The DSPs include one master and one or four auxiliary
DSP(s). 128 MB SDRAM of system memory is shared by all DSPs. When
designing circuits the maximum number of components for each RX DSP is 256.
Each DSP communicates with an internal bus to send and receive information from
the I/O controller and the shared memory.
system boot up and operation. The master DSP also acts as the main data interface
between the zBus (host PC) and the multi-DSP environment.
Because the zBus communicates only with the master processor, these devices
operate most efficiently when the circuit related processing tasks assigned to the
master DSP are minimized, allowing more processor power (cycles) for
communication and overhead tasks.
The RX5 contains two DB25 connectors for interfacing with 40 bits of digital I/O
and 4 channels of analog output. A BNC connector is provided for access to the
first analog output channel. Four fiber optic Medusa preamp ports enable connections
for up to 64 channels of analog input.
Distributing Data Across DSPs
In RPvdsEx data can be transferred between each of the auxiliary DSPs as well as
the master DSP using zHop components.
RX5 Pentusa Base Station
The master DSP supervises overall
System 3