jbn@glacier.STANFORD.EDU (John B. Nagle) (07/07/88)
There are some interesting modem chip sets available for high-speed
half-duplex data transmission. These are intended for fax machines, but
are actually general-purpose digital modems. The Rockwell R96MD is
a 9600 bps half-duplex modem, V.29 compatible, available as a two-chip
set on a board for $175 in quantity 1. This looks like an interesting
unit for specialized applications such as telemetry, amateur packet
radio, and such. It's bus-compatible with 8080-type processors, and
can be made to talk to other 8-bit paths with the usual glue. Or it
can be operated via an RS-232 interface, bearing in mind that this is
a synchronous modem.
Rockwell promises a single-chip version next year, the R96MFX.
Anyone ever use these things?
Contact your local Rockwell rep for further info. The "Modem
Products Data Book" has all the data sheets.
John Nagleyuval@taux01.UUCP (Gideon Yuval) (07/09/88)
> There are some interesting modem chip sets available for high-speed > half-duplex data transmission. These are intended for fax machines, but > are actually general-purpose digital modems. The Rockwell R96MD is > a 9600 bps half-duplex modem, V.29 compatible, available as a two-chip > set on a board for $175 in quantity 1. This looks like an interesting Is the DSP chip inside that modem-chip documented anywhere? in particular, is its multiplier 16*16 giving 32 bits, or 16*16 giving high-order 16 bits, or 16*16 giving low-order 16 bits, or ... ? -- Gideon Yuval, yuval@taux01.nsc.com, +972-2-690992 (home) ,-52-522255(work) Paper-mail: National Semiconductor, 6 Maskit St., Herzliyah, Israel (alternative E-mail address: decwrl!nsc!taux01!yuval@uunet.uu.net)