Altera Cyclone V E FPGA Development Board Uživatelský manuál stáhnout pdf (Strana 45)

Chapter 2: Board Components 2–37

Memory

March 2013 Altera Corporation Cyclone V E FPGA Development Board

Reference Manual

EEPROM

This board includes a 64-Kb EEPROM device. This device has a 2-wire serial interface

bus I

Table 2–26 lists the EEPROM pin assignments, signal names, and functions. The signal

names and types are relative to the Cyclone V E FPGA in terms of I/O setting and

direction.

A14

LPDDR2_DQ29

— 1.2-V HSUL Data bus byte lane 3

A13

LPDDR2_DQ30

— 1.2-V HSUL Data bus byte lane 3

B12

LPDDR2_DQ31

— 1.2-V HSUL Data bus byte lane 3

R23

LPDDR2_DQS0

V26 Differential 1.2-V HSUL Data strobe P byte lane 0

P22

LPDDR2_DQSN0

U26 Differential 1.2-V HSUL Data strobe N byte lane 0

J22

LPDDR2_DQS1

U27 Differential 1.2-V HSUL Data strobe P byte lane 1

K23

LPDDR2_DQSN1

U28 Differential 1.2-V HSUL Data strobe N byte lane 1

AB18

LPDDR2_DQS2

— Differential 1.2-V HSUL Data strobe P byte lane 2

AC19

LPDDR2_DQSN2

— Differential 1.2-V HSUL Data strobe N byte lane 2

B18

LPDDR2_DQS3

— Differential 1.2-V HSUL Data strobe P byte lane 3

A19

LPDDR2_DQSN4

— Differential 1.2-V HSUL Data strobe N byte lane 3

LPDDR2_ZQ

— 1.2-V ZQ impedance calibration

Table 2–25. LPDDR2 SDRAM Schematic Signal Names and Functions

Board

Reference (U9)

Schematic

Signal Name

Cyclone V E

FPGA Pin Number

I/O Standard Description

Table 2–26. EEPROM Schematic Signal Names and Functions

Board

Reference (U12)

Schematic

Signal Name

Cyclone V E FPGA

Pin Number

I/O Standard Description

EEPROM_A0

— 3.3-V Chip address

EEPROM_A1

— 3.3-V Chip address

EEPROM_A2

— 3.3-V Chip address

EEPROM_SDA

AH7 3.3-V Serial address or data

EEPROM_SCL

AG7 3.3-V Serial clock

EEPROM_WP

— 3.3-V Write protect input

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 55 56

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