Datasheet

DAC8564EVM: InstallshuntonJMP 4
DAC8565EVM: DonotinstallshuntonJMP 4
3.2 Host Processor Interface
EVM Operation www.ti.com
Table 2. Factory Default Jumper Setting (continued)
Reference Jumper Function
JMP8 OPEN Onboard external buffered reference U3 is not selected. Default is the +2.5-V internal reference of the
DAC8564/65.
JMP9 1-2 V
REF
L is connected to analog ground.
JMP10 1-2 Negative supply rail of U2 operational amplifier is supplied with V
SS
.
JMP11 1-2 DAC output (V
OUT
A) is routed to J4A-2.
JMP12 1-2 DAC output (V
OUT
B) is routed to J4A-4.
JMP13 1-2 DAC output (V
OUT
C) is routed to J4A-6.
JMP14 1-2 DAC output (V
OUT
D) is routed to J4A-8.
JMP15 1-2 DAC output (V
OUT
A) is routed to the non-inverting input of U2 operational amplifier.
JMP16 1-2 U2 output is monitored from J4A-5.
JMP17 1-2 Digital supply IOV
DD
for the DAC8564/65 is +5 VD.
JMP18 2-3 FSX signal from J2A-7 is used for frame synchronization, SYNC, signal.
J4A 1-2 DAC output (V
OUT
A) is connected to the non-inverting input of the output operational amplifier, U2.
Figure 17. DAC8564/65 EVM Default Jumper Configuration
The host processor basically drives the DAC, so the DACs proper operation depends on the successful
configuration between the host processor and the EVM board. In addition, a properly written code is also
required to operate the DAC.
A custom cable can be made specific to the host interface platform. The EVM allows interface to the host
processor through J2A header connector for the serial control signals and the serial data input. The output
can be monitored through the J4A header connector.
An interface adapter board is also available for specific TI DSP starter kit as well as an MSP430-based
microprocessor as mentioned in section 1 of this manual. Using the interface card alleviates the tedious
task of building customize cables and allows easy configuration of a simple evaluation system.
The DAC8564/65 interfaces with any host processor capable of handling SPI protocols or the popular TI
DSP. For more information regarding the DAC8564 or the DAC8565 data interface, see the data sheet,
(SBAS254 or SBAS411 ), respectively.
DAC8564/65 Evaluation Module18 SLAU252 – June 2008
Submit Documentation Feedback