TDT RZ2 Manual page 14

1-8
The zBus Interface
The I/O Interface
Distributing Data Across DSPs
For the best performance, processing tasks must be efficiently distributed across the
available DSPs. That means transferring data across DSPs. The RZ2 architecture
provides three data buses for this type of data handling.
The Data Pipe Bus
The Data Pipe bus is optimized for handling high count multi-channel data streams
and efficiently transfers up to 256 channels of data between DSPs. The Data Pipe
bus also interconnects to the I/O Interface bus allowing direct access to data from
the PZ amplifiers.
In RPvdsEx data can be transferred across the Data Pipe bus using Data Pipe
components.
PipeSource and MCPipeIn components are used to select a data source (another
DSP or the PZ amplifier) and feed data to a DSP circuit.
MCPipeOut feeds data off the DSP to the Data Pipe Bus.
RZ2 BioAmp Processor
as data buffers and filter coefficients) across processors.
Memory use can be monitored on the RZ2 front panel
display.
When designing circuits also note that the maximum number
of components for each RZ2 standard RZDSP is 768 and
1000 for each QZDSP.
The zBus interface provides a connection to the PC. Data
and host PC control commands are transferred to and from
the DSP Block through the zBus Interface Bus, allowing for
large high-speed data reads and writes without interfering
with other system processing.
The I/O interface serves as a connection to outside signal
sources or output devices. It is used primarily to input data
from a PZ amplifier via the high speed optical port, but also
serves the Legacy amplifier inputs and digital and analog
channels. The I/O Interface Bus provides a direct connection
to each DSP and the Data Pipe Bus.
System 3