Altera Arria V GX Starter Board Bedienungsanleitung PDF herunterladen (Seite 58)

2–50 Chapter 2: Board Components

Power Supply

Arria V GX Starter Board November 2013 Altera Corporation

Reference Manual

Power Measurement

There are 8 power supply rails that have on-board current sense capabilities using

24-bit differential ADC devices. Precision sense resistors split the ADC devices and

rails from the primary supply plane for the ADC to measure current. A SPI bus

connects these ADC devices to the MAX V CPLD 5M2210 System Controller.

Figure 2–13 shows the block diagram for the power measurement circuitry.

Table 2–50 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. If no subnet is named, the power is the total output power for that

voltage.

Figure 2–13. Power Measurement Circuit

SCK

SPI Bus

DSI

DSO

CSn

8 Ch.

Power Supply Load #0-7

SENSE

5M2210

Arria V

FPGA

To User PC

JTAG Chain

Feedback

14-pin

2x16

Character

LCD

D(0:7)

Supply

#0-7

EPM570

USB

PHY

Embedded

USB-Blaster II

Table 2–50. Power Measurement Rails (Part 1 of 2)

Channel Schematic Signal Name Voltage (V) Device Pin Description

0 A5_VCCINT 1.1 VCC FPGA core and periphery power

1 A5_VCCL_VCCR_VCCT_GXB

1.1 VCCL_GXB XCVR analog clock network

1.1 VCCR_GXB XCVR analog receive

1.1 VCCT_GXB XCVR analog transmit

2 A5_VCCIO_1.5V 1.5

VCCIO_8A,

VCCIO_8B,

VCCIO_8C

VCCIO bank 8 (DDR3)

1 2 ... 53 54 55 56 57 58 59 60 61 62

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