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An HDLC driver for TargetLAPBTM, Blunk Microsystems' ISO/IEC 7776 LAPB protocol stack. May also be used as a stand-alone HDLC frame driver or with other third party protocol stacks. Supports all three 68302 SCC channels.
Inherent multiprocessing reduces host processor load. Minimal code runs on the host processor. The HDLC frame driver runs on the IP-Comm302's 68302 and is downloaded by the host processor during initialization. The processors communicate via the IP-Comm302's shared memory using an interrupt-driven protocol in a manner transparent to the application.
Transmit and receive clocks for each channel are independently configured as either externally or internally generated. Each channel has a dedicated baud rate generator to provide internal clocks and a watchdog timer to detect failures in external clocks.
Supports both RS-232 and RS-422 configurations of the XM-302 Transition Module.
Line signal monitoring is independently configured for each channel. Supports control of the RTS and DTR (RS-232 mode only) output signals and monitoring of the CTS, DCD, and DSR (RS-232 mode only) input signals.
Maintains statistics on the number of alignment, CRC, length, and overrun errors and on the number of received ABORTs. Statistics values can be read or printed to stdout.
Shipped with two sample applications: one using TargetLAPB and another for stand-alone testing of the frame driver.
Tested on the VIPC860, VIPC360, and VIPC610 IndustryPack carriers from SBS Modular I/O and the MVME162 IndustryPack carrier from Motorola.
Integrated with CrossStep™/ColdFire, Blunk's IDE for embedded development that includes an integrated project builder, kernel-aware source code debugger, on-chip debug connections for board bring-up and Ethernet debug connections for fast application development.
Royalty free. Includes full ANSI C source code, user's manual, and one year of technical support.