Peripheral Interfaces

FPGA_SPI pins, schematic signal names, FPGA interconnections and I/O standards/levels are shown in Table 11.

Table 11. FPGA_SPI interface pins

Schematic signal name	FPGA pin	I/O standard	Comment
FPGA_SPI_SCLK	W14	3.3V	Serial Clock (FPGA output)
FPGA_SPI_MOSI	W16	3.3V	Data (FPGA output)
FPGA_SPI_MISO	W15	3.3V	Data (FPGA input)
FPGA_SPI_LMS_SS	W13	3.3V	IC1 (LMS7002 (IC1)) SPI slave select (FPGA output)

FPGA_CFG_SPI pins, schematic signal names, FPGA interconnections and I/O standards are shown in Table 12.

Table 12. FPGA_CFG_SPI interface pins

Schematic signal name	FPGA pin	I/O standard	Comment
FPGA_CFG_CCLK	C11	3.3V	Serial Clock (FPGA output)
FPGA_CFG_CS	K19	3.3V	IC18 SPI slave select (FPGA output)
FPGA_CFG_D00	D18	3.3V
FPGA_CFG_D01	D19	3.3V
FPGA_CFG_D02	G18	3.3V
FPGA_CFG_D03	F18	3.3V

FPGA_I2C1 (temperature sensor, EEPROM, CLK DAC, switching regulator) and FPGA_I2C2 (switching regulator) interface slave devices and related information are given in Table 13.

Table 13. FPGA_I2C1 and FPGA_I2C2 interfaces pins

I2C slave device	Slave device	Inteface	I2C address	I/O standard	Comment
IC9	Temperature sensor	FPGA_I2C1	1 0 0 1 0 1 1 RW	3.3V	TMP1075NDRLR
IC13	EEPROM		1 0 1 0 0 0 0 RW	3.3V	M24128
IC17	CLK DAC		1 0 0 1 1 0 0 RW	3.3V	AD5693RACPZ
IC22	Switching regulator		1 1 0 0 0 0 0 RW	3.3V	LP8758A1E0YFFR
IC31	Switching regulator	FPGA_I2C2	1 1 0 0 0 0 0 RW	3.3V	LP8758A1E0YFFR