A4 DSP32C

Flexibility to adapt to your system requirements has been designed into our most popular Lucent DSP32C AT add-on board with 256k bytes of zero wait-state static RAM.

External Connections
With an RJ11 telephone handset connector (not a phone line interface), two phono-jacks, and a sub-miniature D-type 15-pin socket on the endplate, interfacing to external analog signals is made easy. NOTE: a special version of this board without the RCA and RJ11 connectors is needed for use with a single DBY3, DBY4, or dbY5 mezzanine board.

Mezzanine Connections
Since analog requirements vary widely between applications, we have provided a mezzanine board area which can accommodate several analog interfaces or your own custom board. Ten pins from the DB-15 connector on the endplate as well as the analog I/O from the RCA jacks and RJ11 are wired to the right side mezzanine board SIPP socket .

Host Interface
A 16-bit I/O mapped ISA interface provides the fastest data transfer rate possible: 2.5 Mbytes/sec on an 8MHz AT bus (up to 3.5 Mbytes/sec depending on host's bus). Jumpers set the I/O address enabling multiple boards per system.

Interrupts
The DSP32C's program execution can be interrupted by the host or data available on the serial port. The DSP can interrupt the host by executing an instruction that asserts a flag on the IRQ lines. The interrupt asserted (IRQ2 to 15) is hardware selected by jumpers.

DSP-to-DSP Communications
If mezzanine boards are not used, multiple DSP boards can be inter-connected with a flat-ribbon cable between the serial port sockets enabling 40 Mbps communications without using the host's bus. These 14-pin DIP sockets can also be used to communicate with A/D and D/A boards inside the PC's chassis.

Specifications

Performance