Digitally Controlled Analog I/O Processor
9
MX839 PRELIMINARY INFORMATION
4.6 Read Only Registers (8-Bit and 16-Bit)
HEX
ADDRESS/
COMMAND
REGISTER
NAME
BIT 7
(D7)
BIT 6
(D6)
BIT 5
(D5)
BIT 4
(D4)
BIT 3
(D3)
BIT 2
(D2)
BIT 1
(D1)
BIT 0
(D0)
$D1
IRQ
FLAGS
HIRQF
4
LIRQF
4
HIRQF
3
LIRQF
3
HIRQF
2
LIRQF
2
HIRQF
1
LIRQF
1
$DC
A/D DATA1
(1)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
(2)
0
0
0
0
0
0
BIT 9
BIT 1
BIT 8
BIT 0
$DD
$DE
$DF
A/D DATA2
(1)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
(2)
0
0
0
0
0
0
BIT 9
BIT 1
BIT 8
BIT 0
A/D DATA3
(1)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
(2)
0
0
0
0
0
0
BIT 9
BIT 1
BIT 8
BIT 0
A/D DATA4
(1)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
(2)
0
0
0
0
0
0
BIT 9
BIT 8
Table 3: Read Only Registers (8-Bit and 16-Bit)
4.7 Write Only Register Description
4.7.1 RESET Register (Hex Address $01)
The reset command has no data attached to it. It sets the device registers into the specific states listed below:
REGISTER NAME
BIT 7
(D7)
BIT 6
(D6)
BIT 5
(D5)
BIT 4
(D4)
BIT 3
(D3)
BIT 2
(D2)
BIT 1
(D1)
BIT 0
(D0)
CLOCK CONTROL
DAC CONTROL
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
DAC1 DATA
DAC2 DATA
DAC3 DATA
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
A/D CONTROL
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
VARIABLE ATTENUATOR
(1)
(2)
(1)
(2)
(1)
(2)
(1)
(2)
(1)
(2)
MAG COMP ONE LEVELS
MAG COMP TWO LEVELS
MAG COMP THREE LEVELS
MAG COMP FOUR LEVELS
Table 4: RESET Register (Hex Address $01)
Note
1. Default resolution is defined as 8-Bits.
© 1998 MXxCOM Inc.
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Doc. # 20480164.002
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