Manual
16-channel A/D 8-channel D/A Board
Preface
Thank for choosing the Advme1608B. Please read this manual before using the Advme1608B so that you may obtain
the greatest benefit from using the device.
This manual presents the specifications, functions, and method of use of the 16-channel A/D 8-channel D/A Board
Advme1608B.
Advanet Inc. has made every effort to carefully inspect each product and has taken great care to package and to ship
the product. In the unlikely event of the product’s failure to operate normally due to problems in shipping or other-
wise, the company will repair or replace the product at its own responsibility.
Contact Advanet at the following address if you have any questions.
Inquiries
Sales Division
Headquarters
616-4 Tanaka, Kita-ku, Okayama 700-0951 Japan
TEL : 086-245-2861 FAX : 086-245-2860
Tokyo Office KDX Kaji-cho 4F , 3-5-2 Kanda Kaji-cho,
Chiyoda-ku, Tokyo 101-0045 Japan
TEL : 03-5294-1731 FAX : 03-5294-1734
INTERNETURL http://www.advanet.co.jp/
1. In order to improve the product, the contents of this document as well as product specifications are subject to change without notice.
2. This document does not give permission to the implementation of patents or other rights held by Advanet or third parties.
3. Reproduction of all or part of this document without Advanet’s permission is prohibited.
2009 Advanet Inc.
Precautions in Use
Please read this manual before using the product in order to insure its safe use.
Do not place the product in a
location where it can fall or be
subject to vibration or impact
because this may cause device
failure.
Protect the device from vibration and impact.
Do not modify the device.
For safety reasons, under no
circumstances should you
modify the device. Advanet will
not repair products that have
been modified.
Protect the product from water
and chemicals.
Contact between the product
and water or chemicals can
result in product failure,
electrocution, or fire.
Protect the product from
foreign material.
Make sure that foreign
material does not get into the
product during use, storage, or
transport because this can
result in product failure.
Take precautions in handling to insure
that you are not injured.
The sharp projections on this
product may cause injury. Take
care in handling this product in
order to avoid injury.
Do not disassemble the product.
In order to maintain
guaranteed product
performance, do not under any
circumstances disassemble
this product.
Keep the product away from radios and TVs.
Do not use the product near
radios, television sets, or other
devices generating strong
magnetic or electrical fields.
This could result in failure or
malfunction.
Keep the product away from
flame, humidity, and direct sunlight.
Do not use or store the product
in any of the following locations
as this could result in product
failure.
Places where there is fire.
Locations high in humidity
or exposed to rain
Locations exposed to direct
sunlight
Dusty or dirty locations
Locations containing
excessive water or
chemical vapors
Precautions in use
Please read this manual before using the product in order to insure its safe use.
Install the product in well-ventilated locations.
Install the product in well-
ventilated locations to
efficiently disperse heat
generated by the product.
Remove the power plug from the receptacle
when not using the product.
Turn off the main switch and
remove the power plug from
the receptacle when not using
the product, or there is the risk
of lightning strike.
Be sure to use the device within rated parameters.
Be sure to use the product
within the ratings specified in
this manual. Failure to do so
may result in malfunction.
Cleaning the product
If the product becomes dirty,
wipe it with a dry soft cloth. A
thinned neutral cleaner may be
used if the product is
particularly dirty. Do not use
benzene, thinners, or other
solvents under any
circumstances.
Be sure to ground the product in order
to prevent electrocution.
Be sure to ground the product
by connecting it to a 3-pole AC
receptacle or by using an AC
receptacle having a grounding
terminal.
Be sure to dispose of the product properly.
Use appropriate methods for
handling industrial wastes
when disposing of this product.
Please contact Advanet for repair of the product.
Please contact your retail
dealer or Advanet when repairs
are necessary.
Make sure that the product is not miswired.
Failure to wire the product
correctly can result in
malfunction or fire. Read this
manual and wire the product
correctly.
Static electricity may cause malfunction.
This product comprises
electronic parts that are highly
susceptible to static electricity.
Static electricity can cause the
product to malfunction. Take
care not to touch any of the
terminals, connectors, ICs, or
other parts with the hands.
When you believe the product to be malfunctioning
Stop using the product if you
believe it is malfunctioning.
Continuing to use a
malfunctioning product can
cause the malfunction to
spread to other products and
can cause short circuits or fire.
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Content
1. Prior to Use .............................................................................................................................................................................. 6
1.1 Period and Scope of Warranty .......................................................................................................................................... 6
1.2 Scope of Service ............................................................................................................................................................... 6
2. Features .................................................................................................................................................................................... 7
3. Specifications ........................................................................................................................................................................... 8
4. Configuration .......................................................................................................................................................................... 10
5. Setting and Adjustment ........................................................................................................................................................... 11
5.1 Base Address Setting ........................................................................................................................................................ 12
5.2 Analog Input Form Setting ............................................................................................................................................... 12
5.3 Analog Input Range Setting .............................................................................................................................................. 12
5.4 Analog Input Control ........................................................................................................................................................ 13
5.5 Analog Output Range Setting ........................................................................................................................................... 14
5.6 Analog Output Control ..................................................................................................................................................... 14
6. Register Mapping ....................................................................................................................................................................15
6.1 Board ID Register ............................................................................................................................................................. 17
6.2 Interrupt Vector Register ................................................................................................................................................... 17
6.3 Interrupt Level Register .................................................................................................................................................... 18
6.4 Interrupt Clear Register .................................................................................................................................................... 18
6.5 D/A Update Register ......................................................................................................................................................... 18
6.6 D/A Channel Register ....................................................................................................................................................... 19
6.7 D/A Mode Register ........................................................................................................................................................... 19
6.8 D/A Enable Register ......................................................................................................................................................... 20
6.9 D/A Status Register ........................................................................................................................................................... 20
6.10 D/A Data Register ........................................................................................................................................................... 20
6.11 A/D Trigger Register ....................................................................................................................................................... 21
6.12 A/D Channel Register ..................................................................................................................................................... 21
6.13 A/D Status Register ......................................................................................................................................................... 22
6.14 A/D Data Register ........................................................................................................................................................... 22
7. Programming ...........................................................................................................................................................................23
7.1 A/D Conversion Programming ......................................................................................................................................... 23
7.2 Correspondence between Analog Input Voltage and A/D Conversion Result .................................................................. 24
7.3 D/A Conversion Programming ......................................................................................................................................... 24
7.4 Correspondence between D/A Converter Setting Value and Analog Output Voltage ...................................................... 25
8. Connector ................................................................................................................................................................................ 26
8.1 Analog Input Connector .................................................................................................................................................... 26
8.2 Analog Output Connector ................................................................................................................................................. 27
9. Simple Sample Program .......................................................................................................................................................... 28
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1. Prior to Use
1.1 Period and Scope of Warranty
Delivered products are under warranty for a period of one year after delivery.
During the period of warranty, the vendor will have his own to responsibility replace or repair malfunctioning
parts if the product malfunction is the responsibility of the vendor.
However, this warranty does not apply under the following circumstances:
(1) If the user handles or uses the product in an inappropriate way
(2) If the malfunction is caused by something other than the delivered product
(3) If the delivered product has been modified or repaired by anyone other than the vendor
(4) Due to natural disaster, accident, or other reason not the responsibility of the vendor
In this context, the term “warranty” means solely a warranty of the individual delivered product, and does not
include any compensation for the damage caused by malfunction of the delivered product.
1.2 Scope of Service
The service costs such as the costs of sending technical personnel are not included in the price of the delivered
product. Customers will be charged for the following costs:
(1) Assistance with installation adjustments and test running
(2) Maintenance inspections, adjustments, and repairs
(3) Technical assistance and technical training
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2. Features
z Advme1608B is equipped with 16 channels of analog input and 8 channels if analog output.
z The analog input range can be set up at ±10V or 0 to 10V for all channels.
z The analog input can be used to set all channels at once to single-ended or differential input.
z The number of analog input channels is 16 for single-ended inputs and 8 for differential inputs.
z Equipped with a photo-coupler that assures complete insulation between the analog input signal and digital circuits.
z A/D conversion is started up only by the software program.
z A/D conversion is executed successively by switching the channels with a multiplexer.
z A/D conversion is executed successively starting from Channel 0 to the channel specified by the software program.
z The A/D conversion data is sequentially written to the data register in ascending order of the channel number.
z When the A/D conversion of the final channel is completed, an interrupt can be issued to the host CPU.
z The conversion period is 36us per channel and 576us for 16 channels.
z The analog output range can be set up at ±10V, 0 to 10V or 0 to 5V for each channel individually.
z Equipped with a photo-coupler that assures complete insulation between the analog output signal and digital circuits.
z Capable of batch forced step-down of the output voltage of all channels to 0V at power-up and system reset.
z It is possible to update only the output of 1 channel while leaving the other channels untouched (individual update).
z It is possible to update the channel of all outputs simultaneously with simultaneous update function (bulk update).
z VME double-high, VME board with a single slot that are compatible with A16, D16, and D8 (EO).
z Operates on single 5V power supplied from the VME bus.
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3. Specifications
z Analog Input
Number of channels .......... 16 channels (Single-end) or 8 channels (Differential)
Input range ........................ ±10[V] or 0 to 10V (All channel batch)
Input impedance ............... 1[MΩ] (min)
Input filter ......................... 1.6kHz (-3dB)
z A/D conversion
Resolution ......................... 12 bits
Output mode ..................... Binary
±10[V] range 0h to FFFh (-10.24V to +10.24V)
0 to 10[V] range 0h to FFFh (-0.12V to +10.12V)
Overall accuracy ............... ± 0.1% (F.S.)
Conversion rate ................. 36µs/ch, 576µs/16ch
z Analog output
Number of channels .......... 8 channels
Output range ..................... Choose ± 10V,0 to 10V, 0 to 5V (each channel)
Output current ................... 5mA (max)
z D/A conversion
Resolution ......................... 12 bits
Output mode ..................... Binary
±10[V] range 0h to FFFh (-10.24V to +10.24V)
0 to 10[V] range 0h to FFFh (0V to +10.24V)
0 to 5[V] range 0h to FFFh (0V to +5.12V)
D/A Conversion rate ......... 10µs(typ.)
Overall accuracy ............... ± 0.3% (F.S.)
Temperature characteristics .. ± 50ppm/°C (typ), ±100ppm/°C (max)
z Bus interface
Bus standard ..................... VMEbus RevisionC.3
Data width ......................... D16 ,D8(EO)
Address width ................... A16
AM codes .......................... Accessible 29H and 2Dh
Address space ................... 64 bytes of VME bus A16 address spaces C000h to FFFFh
Interrupt request ................ An interrupt is to be issued to one of the VME interrupt request lines IRQ1 to 7.
Interrupt factor .................. Completion of A/D conversion
z Power Supply
Power supply voltage........ 5V±5% (supplied from the VME bus)
Current consumption ........ 1.2A (max)
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z Environmental specification
Operating Temperature Range ....... 0 to 50 °C
Operating Humidity Range ............ 35 to 80%RH(non-condensing)
Storage Temperature Range ........... -10 to 70°C
Storage Humidity Range ................ 0 to 90%RH(non-condensing)
z Mechanical specification
External Dimensions......... 172mm × 262mm × 20mm (protrusions not included)
Weight ............................... 250g
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4. Configuration
The block diagram of Advme1608B is shown in the [Figure 4].
[Figure 4] Block Diagram of Advme1608B
VME Bus
A/D
conversion
Gain / Offset
Adjustment
Range setting
Photo coupler
A/D conversion control circuit
VME Bus control circuit
D/A conversion control circuit
Photo coupler
16162
D/A
conversion
Range setting
D/A
conversion
Range setting
D/A
conversion
Range setting
D/A
conversion
Range setting
D/A
conversion
Range setting
D/A
conversion
Range setting
D/A
conversion
Range setting
D/A
conversion
Range setting
AMP
AMP
AMP
AMP
AMP
AMP
AMP
AMP
Gain
Adjustment
Advme1608B
Analog Output Connector
Analog Input Connector
Input filter
Multiplexer
A/D conversion data
SRAM for storage
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5. Setting and Adjustment
Set up or adjust various settings on the next page and later with reference to [Figure 5].
z DSW1 , DSW2 ................ Base address setting
z JP1 ................................... Input mode setting (Single-end / Differential)
z JP2 ................................... Input range setting (± 10V / 0 to 10V)
z VR1 .................................. Analog input Bipolar offset adjustment
z VR2 .................................. Analog input Gain adjustment
z VR3 .................................. Analog input Unipolar offset adjustment
z JP3 to 10 .......................... Output range setting (± 10V / 0 to 10V / 0 to 5V)
z VR4 .................................. Analog output Gain (reference voltage) adjustment
TPG1 ................................ Analog output Analog ground measurement point
TPG2 ................................ Analog input Analog ground measurement point
TP3 .................................. Analog output Reference voltage measurement point
TP4 .................................. Analog input Converted voltage measurement point
TP5 .................................. Analog input Reference voltage measurement point1
TP6 .................................. Analog input Reference voltage measurement point2
LED1 ............................... It will light for approximately 50 milliseconds since the start of A/D conversion.
LED2 ............................... It will light for approximately 50 milliseconds since the start of D/A conversion.
[Figure 5] Layout of Switches, Jumpers, Volume, and Connectors
CN2 : Analog
Output
Connector
LED1
LED2
JP10
JP9
JP8
JP7
JP6
JP5
JP4
JP3
TPG1
TP3
VR4
DSW2
DSW1
JP2
JP1
VR1
CN1 : Analog
Input Connector
VME Bus
Connector
VR2 VR3
TP5 TP6
TP4
TPG2
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5.1 Base Address Setting
The Advme1608B occupies a 64-byte address space. This 64-byte area can be set within the range of C000h to
FFFFh in the VME bus A16 short address space by using a switch on the board.
The starting address of the required area is referred to as a base address .
The base address is assigned with the switches, DSW 1 and 2.
DSW1 is used to assign addresses corresponding to A13 to A10 address buses, and DSW2 to assign addresses
corresponding to A9 to A6 base address buses.
The following equation shows a correspondence between the base address and DSW1 (DSW2).
Base address = C000h + (DSW1 set point << 10) + (DSW2 set point << 6)
The set value <<N means that the set value is shifted to the left by N bit(s).
When DSW1 is set to 5h and DSW2 is set to Ch:
Base address = C000h + (5h << 10) + (Ch << 6 )
= C000h + 1400h + 300h
= D700h
5.2 Analog Input Form Setting
The Advme1608B allows the setting of analog input formats all at once to single-ended or differential input.
The number of input channels is 16 for single-ended inputs and 8 for differential inputs.
Refer to Chapter 8 for relationship between channel numbers and connector pin numbers of each input format.
Analog input format is selected by setting up the JPI on board as follows;
5.3 Analog Input Range Setting
Advme1608B can set up analog input as ± 10V range or 0 to 10V range for all channels.
The following shows the jumper settings of each range.
JP1
Open Single-end
Short Differential
JP2
Open 0 to +10V
Short - 10V to +10V
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5.4 Analog Input Control
Advme1608B can adjust the gain offset for the analog input of all channels.
Though the connectors have been adjusted before shipment, readjustment may be needed due to changes in range
and secular changes.Make adjustment following the procedure below.
z Range of ±10[V]
(1) Please check that the input range is set up at ± 10V and start up the power supply.
(2) Prepare an accurate voltmeter such as a digital multi-meter (hereafter abbreviated as DMM) to connect it
between TPG2 (ground) and TP6 and adjust VR3 so that the voltage is 2.500V.
(3) Connect the DMM between TPG2 (ground) and TP5 adjust VR2 so that the voltage is 2.560V.
(4) With all analog input channels short-circuited, connect the DMM between TPG2 (ground) and TP4 and adjust
VR1 so that the voltage is 0.00V.
(5) Connect a standard voltage generator to ch0 analog input and program the system to implement A/D conversion
successively.
(6) Set the output voltage to 0[V]. Adjust VR1 such that the A/D conversion data becomes 800h.
(7) Set the output voltage to 10[V]. Adjust VR2 such that the A/D conversion data becomes FD0h.
(8) Set the output voltage to -10[V]. Check that the A/D conversion data is within the range of 030h ±4.
z Range of 0 to 10[V]
(1) Repeat the above procedures (1) to (8) by setting it up at ± 10V range.
(2) Set up at 0 to 10V range.
(3) Connect a standard voltage generator to ch0 analog input and program the system to implement A/D conversion
successively.
(4) Set the output voltage to 5[V]. Adjust VR3 such that the A/D conversion data becomes 800h.
(5) Set the output voltage to 10[V]. Adjust VR2 such that the A/D conversion data becomes FD0h.
(6) Set the output voltage to 0[V]. Check that the A/D conversion data is within the range of 030h ±4.
VR1 Bipolar offset (±10V)
VR2 Gain
VR3 Unipolar offset (0～10V)
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5.5 Analog Output Range Setting
Advme1608B can set up the analog output range for each channel.
The setting sections correspond as Channel 0 to JP3, Channel 1 to JP4 ... and Channel 7 to JP10.
The jumper settings for each case are shown in the following sections;
5.6 Analog Output Control
Advme1608B can adjust the gain for analog output in bulk for all channels.
The adjusted section is VR4, and the adjustment range is ± 2.5% (full scale).
While this has been adjusted at the shipment of Advme1608B, it may be necessary to readjust due to range change
or aging. Adjust the gain as follows;
(1) Write 1 in D/A enable register to enable analog output.
(2) Prepare an accurate voltmeter such as a digital multi-meter (hereafter abbreviated as DMM) to connect it
between TPG1 (ground) and TP3 and adjust VR4 so that the voltage is 10.24V.
(3) Set at the ±10V range and program the system to output 10V at ch0 of analog output.
(4) Measure the output voltage for ch0 with DMM and adjust VR4 so that it is 10.00V.
(5) Program the system so that -10V is output at ch0, and check with DMM that the ch0 output voltage is -10V ± 0.06V.
0V to 5V
0V to 10V
-10V to 10V
64
13
64
13
64
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6. Register Mapping
The base addresses are assigned to the Advme1608B registers as shown below.
Access by word
Relative Address Write Read
00h － Board ID Register
02h Interrupt Vector Register －
04h Interrupt Level Register －
06h Interrupt Clear Register －
08h D/A Update Register －
0Ah D/A Channel Register －
0Ch D/A Mode Register －
0Eh D/A Enable Register －
10h － D/A Status Register
12h D/A Data Register －
14h A/D Trigger Register －
16h A/D Channel Register －
18h － A/D Status Register
1Ah － －
1Ch － －
1Eh － －
20h － A/D Data Register ch0
22h － A/D Data Register ch1
24h － A/D Data Register ch2
26h － A/D Data Register ch3
28h － A/D Data Register ch4
2Ah － A/D Data Register ch5
2Ch － A/D Data Register ch6
2Eh － A/D Data Register ch7
30h － A/D Data Register ch8
32h － A/D Data Register ch9
34h － A/D Data Register ch10
36h － A/D Data Register ch11
38h － A/D Data Register ch12
3Ah － A/D Data Register ch13
3Ch － A/D Data Register ch14
3Eh － A/D Data Register ch15
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Access by byte
Relative Address Write Read
00h － －
01h － Board ID Register
02h － －
03h Interrupt Vector Register －
04h － －
05h Interrupt Level Register －
06h － －
07h Interrupt Clear Register －
08h － －
09h D/A Update Register －
0Ah － －
0Bh D/A Channal Register －
0Ch － －
0Dh D/A Mode Rtgister －
0Eh － －
0Fh D/A Enable Register －
10h － －
11h － D/A Status Register
12h － －
13h － －
14h － －
15h A/D Trigger Register －
16h － －
17h A/D Channal Register －
18h － －
19h － A/D Status Register
1Ah － －
1Bh － －
1Ch － －
1Dh － －
1Eh － －
1Fh － －
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Access by byte (continuance)
<Note> The D/A data registers permit no byte-access.
6.1 Board ID Register
This register permits board identification with respect to its readout numbers.
The board ID for the Advme1608B is 46h.
This register is read only.
Access by word
Bit 15 to 8 : Unused
Bit 7 to 0 : 46h
Access by byte
Bit 7 to 0 : 46h
6.2 Interrupt Vector Register
This Advme1608B sets the interrupt vector (status ID) outputted to the VME bus in the interrupt acknowledge
cycle.The initial value is not specified, and it is for write only.
Access by word
Bit 15 to 8 : Unused
Bit 7 to 0 : Interrupt vector (status ID)
Access by byte
Bit 7 to 0 : Interrupt vector (status ID)
Relative Address Write Read
20h － A/D Data Register ch0
21h － A/D Data Register ch0
22h － A/D Data Register ch1
23h － A/D Data Register ch1
24h － A/D Data Register ch2
25h － A/D Data Register ch2
26h － A/D Data Register ch3
27h － A/D Data Register ch3
28h － A/D Data Register ch4
29h － A/D Data Register ch4
2Ah － A/D Data Register ch5
2Bh － A/D Data Register ch5
......
3Ch － A/D Data Register ch14
3Dh － A/D Data Register ch14
3Eh － A/D Data Register ch15
3Fh － A/D Data Register ch15
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6.3 Interrupt Level Register
This register is used to specify the VME bus interrupt lines (levels) asserted by the Advme1608B when interrupt
occurs.The initial value is not specified, and it is for write only.
Access by word
Bit 15 to 3 : Unused
Bit 2 to 0 : Interrupt level
Access by byte
Bit 7 to 3 : Unused
Bit 2 to 0 : Interrupt level
Interrupt level
6.4 Interrupt Clear Register
This register clears each interrupt factor.
When the software interrupt processing routine is completed, any value should be written to enable the next
interrupt.This register is write only.
6.5 D/A Update Register
This is the register for updating all channels of analog output simultaneously.
When an optional value is written, all analog outputs will be simultaneously updated with the voltage pre-speci-
fied in D/A data register.This register is write only.
Bit 2,1,0 Interrupt Level
0 0 0 Interrupt is masked
0 0 1 IRQ1/
0 1 0 IRQ2/
0 1 1 IRQ3/
1 0 0 IRQ4/
1 0 1 IRQ5/
1 1 0 IRQ6/
1 1 1 IRQ7/
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6.6 D/A Channel Register
This is the register for specifying which channel of analog output will be set up with the output data before writing
data on D/A data register.The initial value is not specified, and it is for write only.
Access by word
Bit 15 to 3 : Unused
Bit 2 to 0 : Channel namber
Access by byte
Bit 7 to 3 : Unused
Bit 2 to 0 : Channel namber
Channel namber
6.7 D/A Mode Register
It specifies whether the output of all channels shall be updated in bulk or each channel shall be updated individually.
With individual update mode, only the output of the channel specified in D/A channel register is updated when
data is written in the D/A data register.
With bulk update mode, the output of the channel specified in D/A channel register at the time will not be updated
even when data is written in the D/A data register. Output for all channels will be updated simultaneously when
data is written in the D/A update register.
The initial value is not specified, and it is for write only.
Access by word
Bit 15 to 1 : Unused
Bit 0 : D/A mode
Access by byte
Bit 7 to 1 : Unused
Bit 0 : D/A mode
D/A mode 0 J Individual update is chosen
1 J Bulk update is chosen
Bit 2,1,0 Channel namber
0 0 0 Channel 0 of analog output will be selected.
0 0 1 Channel 1 of analog output will be selected.
0 1 0 Channel 2 of analog output will be selected.
0 1 1 Channel 3 of analog output will be selected.
1 0 0 Channel 4 of analog output will be selected.
1 0 1 Channel 5 of analog output will be selected.
1 1 0 Channel 6 of analog output will be selected.
1 1 1 Channel 7 of analog output will be selected.
<Advme1608B><Advme1608B>
<Advme1608B><Advme1608B>
<Advme1608B>
20
6.8 D/A Enable Register
This is the register to control enable or disable of all analog outputs.
Analog output for all channels will be enabled when 1 is written in this register.
Output for all channels will be set to 0V by force when 0 is written in this register.
This will not change the value written in the D/A converter.
This register is reset to 0 automatically when the power is turned ON.This register is write only.
Access by word
Bit 15 to 1 : Unused
Bit 0 : D/A enable
Access by byte
Bit 7 to 1 : Unused
Bit 0 : D/A enable
D/A mode 0 J All analog outputs will be disabled (0V output).
1 J All analog outputs will be enabled.
6.9 D/A Status Register
This is the register to indicate the status of the analog output block of Advme1608B.
This register is read only.
Access by word
Bit 15 to 3 : Unused
Bit 2 : D/A mode (The setting value in the D/A mode register)
Bit 1 : D/A ebable (The setting value in the D/A ebable register)
Bit 0 : D/A busy (1 during D/A conversion and 0 when conversion is completed.)
Access by byte
Bit 7 to 3 : Unused
Bit 2 : D/A mode (The setting value in the D/A mode register)
Bit 1 : D/A ebable (The setting value in the D/A ebable register)
Bit 0 : D/A busy (1 during D/A conversion and 0 when conversion is completed.)
6.10 D/A Data Register
This is the register to set up the analog output value.
Which channel will be set up needs to be set up in the D/A channel register in advance.The initial value is not
specified, and it is for write only.
This register is available only at word access.
Access by word
Bit 15 to 12 : Unused
Bit 11 to 0 : D/A conversion data
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