Texas Instruments DAC81408EVM, Руководство пользователя

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Detailed Description
7 SLAU778A – June 2018 – Revised December 2018
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DAC81408EVM
3.1.2 Signal Definition of USB2ANY
The DAC81408EVM provides a hardware connector (J8) that connects to the USB2ANY interface board.
The USBANY platform supplies VIO power and is responsible for providing the SPI commands sent from
the PC GUI software. Optionally, the VIO supply can be provided through an external supply, and all
digital communication lines can be accessed through their respective digital test points.
Table 6 provides
the pin definitions for this connector. Table 7 provides the corresponding test points for the SPI signals.
Table 6. J8 (USB2ANY) Pin Definitions
Pin# Signal Description
1 GPIO7 General purpose I/O
2 CS/GPIO6 CS or general-purpose I/O
3 RXD/MISO SPI MISO
4 TXD/MOSI SPI MOSI
5 3.3V 3.3-V supply
6 GND Ground
7 GPIO3 General-purpose I/O
8
SCLK/GPIO2 SPI SCLK or general-purpose
I/O
9 GPIO1 General-purpose I/O
10 GPIO0 General-purpose I/O
Table 7. J8 SPI Signal Test Points
Test Points SPI Signal
TP6 MISO, SDO
TP7 CS
TP8 MOSI, SDI
TP9 LDAC
TP10 SCLK
3.1.3 DAC Signal Pins
The DAC81408EVM provides access to all DAC outputs through connection J1, as shown in Figure 5 , and
listed in Table 8 .