Synchronous RS-422/RS-485 serial connectivity is an
appropriate choice when rigorous security and intensive data integrity protocols
are required for high-speed serial communication. It is the communication method
of choice for a wide variety of military and commercial systems such as
satellite monitoring, radar control, GPS systems, flight recorder data
transfers, and HF (High Frequency) e-mail systems to name a few.
Quatech's single port RS-422/485
synchronous serial PCMCIA card supports asynchronous data formats as well as
byte-oriented synchronous protocols such as BiSync, and bit-oriented synchronous
protocols such as HDLC and SDLC. The card's robust design provides 1024-byte
transmit and receive FIFO's that support interrupt-driven communication with
data rates up to 2.45 Mbps. If a specific frequency is required, upgraded
crystals and custom configurations can be provided for speeds up to 4 Mbps.
In addition to super fast data rates,
the card's SCC provides advanced internal functions including on-chip baud rate
generators and digital phase-lock loop (DPLL) for recovering data clocking from
received data streams. Quatech's frame-level HDLC and BiSync
driver, SyncDrive, is included for Windows 95/98/Me and OS/2. For Windows
2000/XP, Vista, SyncDrive Plus, a bit-synchronous SDLC/HDLC driver is also included.
Both SyncDrive packages are not application programs themselves, but provide C
callable routines and C data structures designed to aid users in the development
of their own application software.
