Altera Arria V SoC Development Board - Manual (Page 63)

Chapter 2: Board Components 2–55
Power Supply
July 2014 Altera Corporation Arria V SoC Development Board
Reference Manual
Power Measurement
There are eleven power supply rails that have on-board current sense capabilities
using 16-bit differential ADC devices. Precision sense resistors split the ADC devices
and rails from the primary supply plane for the ADC to measure current.
Figure 2–10 shows the block diagram for the power measurement circuitry.
Table 2–35 lists the targeted rails. The schematic signal name column specifies the
name of the rail being measured while the device pin column specifies the devices
attached to the rail.
Figure 2–10. Power Measurement Circuit
SCK
SPI Bus
DSI
DSO
CSn
8 Ch.
Power Supply Load #0-6
R
SENSE
MAX V CPLD
5M2210
System
Controller
Arria V SoC
To User PC
JTAG Chain
Feedback
14-pin
2x16
Character
LCD
E
RW
RS
D(0:7)
Supply
#0-6
EPM570
USB
PHY
Embedded
USB-Blaster II
Table 2–35. Power Measurement Rails (Part 1 of 2)
Channel Schematic Signal Name Voltage (V) Device Pin Description
0 2.5V_FPGA 2.5
VCCIO
I/O, FPGA internal and peripheral devices VCCPD
VCC
1 1.5V_FPGA 1.5 VCCIO I/O and DDR3 devices
2 1.15V_VCC 1.15 VCC FPGA core power, transceiver, and clock
3 VAR_VCCIO
2.5, 1.8, 1.5,
1.2
VCCIO FMC I/O
4 1.15V_GXB 1.15
VCCR_GXB Receiver power
VCCL_GXB Transceiver clock network
5 1.15V_VCCT 1.15 VCCT_GXB Transmitter power
6 1.5V_VCCD/VCCH 1.5
VCCD_FPLL Phase-locked loop (PLL) digital power
VCCH_GXB Transmitter output buffer power
7 1.15V_HPS 1.15 VCC_HPS HPS core power
8 1.5V_HPS 1.5 VCCIO_HPS I/O and DDR3 devices