Power supply, Power supply –49 – Altera Cyclone V SoC Development Board User Manual
Page 57
Chapter 2: Board Components
2–49
Power Supply
November 2013
Altera Corporation
Cyclone V SoC Development Board
Reference Manual
lists the I
2
C EEPROM pin assignments, signal names, and functions. The
signal names and types are relative to the Cyclone V SoC in terms of I/O setting and
direction.
Power Supply
You can power up the development board from a laptop-style DC power input or
through the DC auxiliary connector. The Cyclone V SoC is designed in such way that
the power rails for the HPS and FPGA are independent, allowing power down for the
FPGA side when the HPS side is running. This eliminates power consumption on the
FPGA part when not in use.
Table 2–39
lists the maximum allowed draws of the power input.
An on-board multi-channel analog-to-digital converter (ADC) measures the current
for several specific board rails.
Table 2–38. I
2
C EEPROM Schematic Signal Names and Functions
Board
Reference (U28)
Schematic Signal
Name
Cyclone V SoC
Pin Number
I/O Standard
Description
6
I2C_SCL_HPS
D22
3.3-V
HPS I
2
C serial clock
5
I2C_SDA_HPS
C23
3.3-V
HPS I
2
C serial data
Table 2–39. Power Input Maximum Allowed Draws
Source
Voltage (V)
Wattage (W)
Laptop Supply—DC input
16.0
200
20.0
200
DC auxiliary connector
12.0
200