Timer Current Count Registers; Timer Basecount Registers - Motorola MVME2600 Series Reference Manual
Mvme2600/2700 series single board computer
Hide thumbs
Also See for MVME2600 Series:
- Installation and use manual (198 pages) ,
- Installation and use manual (20 pages) ,
- Programmer's reference manual (20 pages)
Table of Contents
Advertisement
Raven PCI Host Bridge & Multi-Processor Interrupt Controller Chip
Timer Current Count Registers
2
Offset
Bit
3
1
Name
Operation
Reset
Timer Basecount Registers
Offset
Bit
3
1
Name
Operation
Reset
2-70
3
2
2
2
2
2
2
2
2
2
0
9
8
7
6
5
4
3
2
1
T
TOGGLE. This bit toggles when ever the current count
decrements to zero.
CC
CURRENT COUNT. The current count field decrements
while the Count Inhibit bit is the Base Count Register is
zero. When the timer counts down to zero, the Current
Count register is reloaded from the Base Count register.
3
2
2
2
2
2
2
2
2
2
0
9
8
7
6
5
4
3
2
1
CI
COUNT INHIBIT. Setting this bit to one inhibits
counting for this timer. Setting this bit to zero allows
counting to proceed.
Timer 0 - $01100
Timer 1 - $01140
Timer 2 - $01180
Timer 3 - $011C0
2
1
1
1
1
1
1
1
1
0
9
8
7
6
5
4
3
2
TIMER CURRENT COUNT
CC
R
$00000000
Timer 0 - $01110
Timer 1 - $01150
Timer 2 - $01190
Timer 3 - $011D0
2
1
1
1
1
1
1
1
1
0
9
8
7
6
5
4
3
2
TIMER BASECOUNT
BC
R/W
$00000000
1
1
1
0 9 8 7 6 5 4 3 2 1 0
1
1
1
0 9 8 7 6 5 4 3 2 1 0
Advertisement
Table of Contents
