Peripheral Interfaces

FPGA_SPI pins, schematic signal names, FPGA interconnections and I/O standards/levels are shown in Table 9.

Table 9. FPGA_SPI interface pins

Schematic signal name	FPGA pin	I/O standard	Comment
FPGA_SPI_SCLK	M3	2.5V / 3.3V	Serial Clock (FPGA output)
FPGA_SPI_MOSI	L3	2.5V / 3.3V	Data (FPGA output)
FPGA_SPI_MISO	K3	2.5V / 3.3V	Data (FPGA input)
FPGA_SPI_LMS_SS	N3	2.5V / 3.3V	IC1 (LMS7002) SPI slave select (FPGA output)
FPGA_SPI_DAC_SS	L4	2.5V / 3.3V	IC11 SPI slave select (FPGA output)

FPGA_CFG_SPI pins, schematic signal names, FPGA interconnections and I/O standards are shown in Table 10.

Table 10. FPGA_CFG_SPI interface pins

Schematic signal name	FPGA pin	I/O standard	Comment
FPGA_CFG_SPI_SCLK	U16	3.3V	Serial Clock (FPGA output)
FPGA_CFG_SPI_MOSI	U18	3.3V
FPGA_CFG_SPI_MISO	T18	3.3V
FPGA_CFG_SPI_SS	U17	3.3V	IC15 SPI slave select (FPGA output)

FPGA_I2C (temperature sensor and EEPROM) interface slave devices and related information are given in Table 11.

Table 11. FPGA_I2C interface pins

I2C slave device	Slave device	I2C address	I/O standard	Comment
IC10	Temperature sensor	1 0 0 1 0 0 0 RW	3.3V	LM75
IC12	EEPROM	1 0 1 0 0 0 0 RW	3.3V	M24128