參數(shù)資料
型號(hào)： DAC5571EVM
廠商： Texas Instruments, Inc.
英文描述： DAC5571 Evaluation Module(DAC5571評(píng)估模塊)
中文描述： DAC5571評(píng)估模塊（DAC5571評(píng)估模塊）
文件頁數(shù)： 31/39頁
文件大小： 437K
代理商： DAC5571EVM
Host Processor Interface
3-3
EVM Operation
Table 3-3.DAC8571EVM Factory Default Jumper Setting
DAC8571 EVM CONFIGURATION
Reference
Jumper
Position
2-3
Function
W1
Power supply for the DAC8571 is 5 VA.
W2
1-2
DAC output is routed to J4-2.
W3
OPEN
U2 is configured as unity gain op-amp.
W4
2-3
SDA is routed to SDATA..
W5
1-2
Negative supply rail of U2 op-amp is supplied with
V
SS.
SCL is routed to SCLK.
W6
2-3
W7
OPEN
For U1 use only
W8
OPEN
For U1 use only
For I
2
C SDA bit-bang using the DSP
W9
OPEN
W10
CLOSE
V
SENSE
is tied to V
OUT
for feedback.
For U1 use only
W11
1-2
W12
1-2
For U1 use only
W13
1-2
For U1 use only
W14
2-3
The 5 VD is routed for digital supply.
TP8
OPEN
For connecting external V
REF
if desired
For tying V
DD
and V
REF
together and isolating it from
U1 and U8 (if all DUTs are installed)
TP9
OPEN
3.2
Host Processor Interface
Because the host processor controls the DAC, proper operation depends on
the correct interface of the host processor and the EVM board. Properly written
code is also required to operate the DAC.
A host-platform-specific cable assembly connects the EVM to the host
processor through J2 for the I
2
C serial-control and data signals. The output is
monitored through J4.
An interface-adapter card is available for specific TI DSP starter kits as well
as for an MSP430 based microprocessor as mentioned in Chapter 1, section
1.3. Using the interface card alleviates the tedious task of building custom
cables and allows easy configuration of a simple evaluation system.
This DAC EVM interfaces with any host processor capable of I
2
C protocols or
the popular TI DSP. For more information regarding the serial interface of the
particular DAC installed, please refer to the specific DAC datasheet, as listed
in the
Related Documentation from Texas Instruments
section in the
Preface
of this user’s guide.
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