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P a g e 32
Specifications
Host Interface: PCI Mezzanine Card
Serial Interfaces: Four UART channels each with an RS422 driver and receiver and
an RS423 driver. One synchronous channel with Mil. Std. 188-
114A Type 1 enhanced hysteresis receivers for clock and data, a
188 driver for Tx data, and an open drain PTT interface on the RTS
line. Another synchronous channel with RS422 driver and receiver.
TX Data rates generated: Up to 1.152 MHz for the UART channels. Up to 3.072 MHz for
the SCC in synchronous mode. Other rates are available with
different oscillator installations.
Software Interface: Control Registers, Status Ports, UART, and SCC Interface
Initialization: Hardware Reset forces all registers to 0, resets UART and SCC.
Access Modes: LW boundary Space (see memory map)
Wait States: 1 for all addresses except UART and SCC accesses.
Interrupt: Each UART channel has its own interrupt bit
The SCC has one interrupt bit for both channels
The interrupts generated by these devices depend on the setup
specified in the UART and SCC internal registers
DMA: No DMA Support implemented at this time
Onboard Options: All Options are Software Programmable
Interface Options: 68 pin twisted pair cable
68 screw terminal block interface
Dimensions: Standard Single PMC Module.
Construction: FR4 Multi-Layer Printed Circuit, Through Hole and Surface Mount
Components. Programmable parts are socketed.
Temperature Coefficient: 0.89 W/
o
C for uniform heat across PMC
Power: Max. TBD mA @ 5V