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Maps and Registers
Page
19
Blue Chip Technology Ltd.
01270146.doc
Page 19
MAPS AND REGISTERS
Card Address Map
BASE
+ n
R/W
SECTION
FUNCTION
0
W
DAC
DAC Control register
0
R
DAC
Initiate DMA transfer / reset state machine logic
1
W
DAC
Channel Enable register 1
2
W
DAC
Channel Enable register 2
3
W
DAC
DAC output data
4
R/W
PIO
PIO PORT A data
5
R/W
PIO
PIO PORT B data
6
R/W
PIO
PIO PORT C data
7
R/W
PIO
PIO Control register
8
R/W
Timer
Timer 0 count register
9
R/W
Timer
Timer 1 count register
10
R/W
Timer
Timer 2 count register
11
R/W
Timer
Timer control register
DAC Control Register
(Base + 0)
DATA BIT
FUNCTION
0
DAC Channel Select / update Bit 0 *1
1
DAC Channel Select / update Bit 1 *1
2
DAC Channel Select / update Bit 2 *1
3
DAC Channel Select / update Bit 3 *1
4
0 = Disable DMA Request
1 = Enable DMA Request
5
0 = I/O Mode
1 = DMA Mode
6
0 = Disable DAC control timers (timers 0 and 1)
1 = Enable DAC control timers (timers 0 and 1)
7
0 = Disable uncommitted timer 2
1 = Enable uncommitted timer 2
*1
writing 0 into all four bits updates the previously selected DAC output
Summary of Contents for AOP-12D
Page 1: ...AOP 12D Multi Function Analogue Output Card User Manual...
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