Altera Arria V GX FPGA Development Board Bedienungsanleitung PDF herunterladen (Seite 36)

2–26 Chapter 2: Board Components

Clock Circuitry

Arria V GX FPGA Development Board November 2013 Altera Corporation

Reference Manual

Table 2–21 lists the oscillators, its I/O standard, and voltages required for the

development board.

Table 2–21. On-Board Oscillators

Source

Schematic Signal

Name

Frequency I/O Standard

Arria V GX

FPGA Pin

Number

Application

X6 to U51 1:3

clock buffer

CLKIN_MAX_50

50.000 MHz

1.8-V —

Nios II and MAX II CPLD

CLKINA_50

1.8-V AF21

CLKINB_50

1.8-V AP34

CLK_CONFIG

100.000 MHz 2.5-V CMOS — Fast FPGA configuration

X7 to U56 1:6

clock buffer

REFCLK1_A_QL0_P

100.000 MHz

LVDS

(fanout buffer)

AE31

PCI Express host/dual-XTL

REFCLK1_A_QL0_N

AE32

CLKINBOTA_P0

AD20

Bottom edge FPGA 1 – QDRII+

CLKINBOTA_N0

AC21

CLKINTOPA_P0

C20

Top edge FPGA 1 – DDR3

CLKINTOPA_N0

D20

CLKINBOTB_P0

AK7

Bottom edge FPGA 2

CLKINBOTB_N0

AJ7

CLKINTOPB_P0

C34

Top edge FPGA 2 – DDR3

CLKINTOPB_N0

D34

CLKA_125_P

125.000 MHz

LVDS AP34

Fixed clock at 125 MHz for

FPGA 1 bank 3A

CLKA_125_N

LVDS AN34

CLKB_125_P

125.000 MHz

LVDS AD20

Fixed clock at 125 MHz for

FPGA 1 bank 3D

CLKB_125_N

LVDS AC21

REFCLK0_QR0_P

148.500 MHz

LVDS —

HD-SDI video

REFCLK0_QL2_N

LVDS —

U53

REFCLK4_A_QL2_P

625.000 MHz

LVDS W31

SFP+

REFCLK4_A_QL2_N

LVDS W32

REFCLK3_A_BUF_P

156.250 MHz

LVDS —

SFP+, Bull's Eye connector,

1:2 clock to REFCLK3 on FPGA 1,

REFCLK3_A_BUF_N

LVDS —

REFCLK2_A_QL1_P

125.000 MHz

LVDS U31

REFCLK2_A_QL1_N

LVDS U32

CLKINBOTA_P1

125.000 MHz

LVDS AL20

Bottom edge FPGA 1 – memory

CLKINBOTA_N1

LVDS AK20

U48

REFCLK4_A_QR2_P

125.000 MHz

LVDS T9

HSMC port A, C2C

REFCLK4_A_QR2_N

LVDS T8

REFCLK2_A_QR1_P

100.000 MHz

LVDS AB9

REFCLK2_A_QR1_N

LVDS AB8

REFCLK0_A_QR0_P

625.000 MHz

LVDS AF8

C2C

REFCLK0_A_QR0_N

LVDS AF7

CLKINTOPA_P1

125.000 MHz

LVDS A22

Top edge FPGA 1 – memory

CLKINTOPA_N1

LVDS A21

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 ... 89 90

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