Tick timer 2 control register, Tick timer 2 control register -72 – Motorola MVME1X7P User Manual

Page 162

Advertising
background image

2-72

Computer Group Literature Center Web Site

VMEchip2

2

WDCS

When this bit is set high, the watchdog time-out status bit
(WDTO bit in this register) is cleared.

SRST

When this bit is set high, a SYSRESET signal is generated
on the VMEbus. SYSRESET resets the VMEchip2 and
clears this bit.

Tick Timer 2 Control Register

EN

When this bit is high, the counter increments. When this
bit is low, the counter does not increment.

COC

When this bit is high, the counter is reset to 0 when it
compares with the compare register. When this bit is low,
the counter is not reset.

COVF

The overflow counter is cleared when a 1 is written to this
bit.

OVF

These bits are the output of the overflow counter. The
overflow counter is incremented each time the tick timer
sends an interrupt to the local bus interrupter. The
overflow counter can be cleared by writing a 1 to the
COVF bit.

ADR/SIZ

$FFF40060 (8 bits [7 used] of 32)

BIT

15

14

13

12

11

10

9

8

NAME

OVF

COVF

COC

EN

OPER

R

C

R/W

R/W

RESET

0 PS

0 PS

0 PS

0 PS

Advertising