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MVME5100 Single Board Computer Programmer's Reference Guide

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TBEN Bit Register<br />

PCI Local Bus<br />

The <strong>MVME5100</strong> implementation of this register is fully compliant with<br />

the PowerPlus II Programming Specification, with exceptions to Bit RD6,<br />

as indicated in the following table:<br />

The TBEN Bit register provides the means to control the Processor<br />

Timebase Enable input.<br />

Table 1-14. TBEN Bit Register<br />

REG TBEN Bit Register - Offset 80C0h<br />

BIT<br />

FIELD<br />

RD0 RD1 RD2 RD3 RD4 RD5 RD6 RD7<br />

TBEN1<br />

(NOT USED)<br />

OPER R R R R R R R/W R/W<br />

RESET X X X X X X 1 1<br />

REQUIRED<br />

OR<br />

OPTIONAL<br />

X X X X X X O R<br />

TBEN0 Processor 0 Time Base Enable. When this bit is cleared, the TBEN<br />

pin of Processor 0 will be driven low. When this bit is set, the<br />

TBEN pin is driven high.<br />

TBEN1 This bit is not used.<br />

http://www.motorola.com/computer/literature 1-27<br />

TBEN0<br />

1

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