7I47 1
GENERAL
DESCRIPTION
The 7I46 is a simple passive breakout board designed to connect up to 6 SPI
devices to a single 50 pin Anything I/O connector. 10 pin headers are used for the SPI
signals. The pinout matches Mesas SPI device pinouts and also supplies 5V power to the
SPI device. A high side power switch allows AUX 5V power suppled to the the 7I46 to be
routed to the SPI devices, the SPI power will be removed when the Anything I/Os cable
power is off, avoiding possible back-powering of the FPGA card from external AUX 5V
supply.
The controller connection is a 50 pin header that matches the pinout of Mesa’s
Anything I/O cards. All RS-422 interface connections use pluggable Phoenix compatible
3.5 mm screw terminals.
