31
Figure 3-19 Connections of I2C Multiplexer
Table 3-16 I2C Bus Pin Assignments
Signal Name
FPGA Pin No. Description
I/O Standard
FPGA_I2C_SCLK PIN_J12
FPGA I2C Clock
3.3V
FPGA_I2C_SDAT
PIN_K12
FPGA I2C Data
3.3V
HPS_I2C1_SCLK
PIN_E23
I2C Clock of the first HPS I2C concontroller
3.3V
HPS_I2C1_SDAT
PIN_C24
I2C Data of the first HPS I2C concontroller
3.3V
HPS_I2C2_SCLK
PIN_H23
I2C Clock of the second HPS I2C concontroller
3.3V
HPS_I2C2_SDAT
PIN_A25
I2C Data of the second HPS I2C concontroller
3.3V
3.6.6
VGA
The DE1-SoC board includes a 15-pin D-SUB connector for VGA output. The VGA
synchronization signals are provided directly from the Cyclone V SoC FPGA, and the Analog
Devices ADV7123 triple 10-bit high-speed video DAC (only the higher 8-bits are used) is used to
produce the analog data signals (red, green, and blue). It could support the SXGA standard
(1280*1024) with a bandwidth of 100MHz.
Figure 3-20
gives the associated schematic
.