Functional Description
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package. The clock provides seconds, minutes, hours, day, date, month,
and year in BCD 24-hour format. Corrections for 28-, 29- (leap year), and
30-day months are made automatically. No interrupts are generated by the
clock. Although the M48T58 is an 8-bit device, the interface provided by
the PCCchip2 ASIC supports 8-, 16-, and 32-bit accesses to the M48T58.
Refer to the PCCchip2 description in the Programmer’s Reference Guide
and to the M48T58 data sheet for detailed programming guidance and
battery life information.
VMEbus Interface and VMEchip2
The VMEchip2 ASIC provides the local-bus-to-VMEbus interface, the
VMEbus-to-local-bus interface, and the DMA controller functions of the
local VMEbus. The VMEchip2 also provides the VMEbus system
controller functions. Refer to the VMEchip2 description in the
Programmer’s Reference Guide for detailed programming information.
I/O Interfaces
The MVME177P provides onboard I/O for many system applications. The
I/O functions include serial ports, printer port, Ethernet transceiver
interface, and SCSI mass storage interface.
Serial Port Interface
The CD2401 serial controller chip (SCC) is used to implement the four
serial ports. The serial ports support standard baud rates (110 to 38.4K
baud). The four serial ports differ functionally because of the limited
number of pins on the P2 I/O connector. Serial port 1 is a minimum
function asynchronous port. It uses RXD, CTS, TXD, and RTS. Serial
ports 2 and 3 are full function asynchronous ports. They use RXD, CTS,
DCD, TXD, RTS, and DTR. Serial port 4 is a full function asynchronous
or synchronous port. It can operate at synchronous bit rates up to 64 k bits
per second. It uses RXD, CTS, DCD, TXD, RTS, and DTR. It also
interfaces to the synchronous clock signal lines. Refer to the
Programmer’s Reference Guide for drawings of the serial port interface
connections.
Summary of Contents for MVME177P
Page 1: ...MVME177P Single Board Computer Installation and Use V177PA IH1 Edition of October 2000 ...
Page 10: ...x ...
Page 12: ...xii ...
Page 14: ...xiv ...
Page 34: ...1 16 Computer Group Literature Center Web Site Hardware Preparation and Installation 1 ...
Page 48: ...2 14 Computer Group Literature Center Web Site Startup and Operation 2 ...
Page 92: ...C 2 Computer Group Literature Center Web Site Network Controller Data C ...
Page 98: ...D 6 Computer Group Literature Center Web Site Disk Tape Controller Data D ...
Page 108: ...Index IN 6 Computer Group Literature Center Web Site I N D E X ...