MVME162-353 processor

Description

MVME162-353

An MK48T08 RAM and clock chip is used on the MVME162. This chip

provides a time-of-day clock, oscillator, crystal, power fail detection, memory

write protection, 8KB of RAM, and a battery in one 28-pin 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

automatically made. No interrupts are generated by the clock. Although the

MK48T08 is an 8- bit device, the interface furnished by the MCchip supports

8-, 16-, and 32-bit accesses to the MK48T08. Refer to the MCchip description

in Chapter 3 and to the MK48T08 data sheet for detailed programming and

battery life information.

VMEbus Interface and VMEchip2

The optional VMEchip2 provides the local-bus-to-VMEbus and VMEbus-tolocal-bus interfaces. The VMEchip2 can also provide the VMEbus system

controller functions. Refer to the MVME162 Embedded Controller Programmer’s

Reference Guide for detailed programming information. Refer to the MVME162

Embedded Controller Support Information manual for the pin assignments of

VMEbus backplane connectors P1 and P2.

Note that the ABORT switch logic in the VMEchip2 is not used. The GPI inputs

to the VMEchip2 which are located at $FFF40088 bits 7-0 are not used. The

ABORT switch interrupt is integrated into the MCchip ASIC at location

$FFF42043. The GPI inputs are integrated into the MCchip ASIC at location

$FFF4202C, bits 23-16.

MVME162-243

MVME162-322

MVME162-353