Altera Cyclone III LS FPGA Development Board Bedienungsanleitung PDF herunterladen (Seite 43)

Chapter 2: Board Components 2–35

Memory

Table 2–36 lists the HSMC connector component reference and manufacturing

information.

Memory

This section describes the board's memory interface support and also their signal

names, types, and connectivity relative to the Cyclone III LS device. The board has the

following memory interfaces:

■ DDR2

■ SSRAM

■ Flash

■ EEPROM

f For more information about the memory interfaces, refer to the following documents:

■ AN 438: Constraining and Analyzing Timing for External Memory Interfaces in Stratix

IV, Stratix III, and Cyclone III Devices.

■ AN 445: Design Guidelines for Implementing DDR and DDR2 SDRAM Interfaces in

Cyclone III Devices.

U27.7 Dedicated CMOS I/O bit 73 when

LCD_HSMB_SEL is set to a logic 1.

LCD_HSMB_D73

2.5-V

U27.12 Dedicated CMOS I/O bit 74 when

LCD_HSMB_SEL is set to a logic 1.

LCD_HSMB_D74 W6

U27.9 Dedicated CMOS I/O bit 75 when

LCD_HSMB_SEL is set to a logic 1.

LCD_HSMB_D75 W7

J1.155 LVDS or CMOS clock out 2 or CMOS bit 76 HSMB_CLKOUT_P2 T6

J1.156 LVDS or CMOS clock in 2 or CMOS bit 77 HSMB_CLKIN_P2 T2

J1.157 LVDS or CMOS clock out 2 or CMOS bit 77 HSMB_CLKOUT_N2 T5

J1.158 LVDS or CMOS clock in 2n or CMOS bit 79 HSMB_CLKIN_N2 T1

J1.160 HSMC port B presence detect LED HSMB_PRSNTn —

J18 To control the HSMB_D[65:75] via the FPGA,

the shunt should be removed from this jumper,

or the FPGA must drive a logic 1.

LCD_HSMB_SEL

1.8-V

D20

Note to Table 2–35:

(1) Board references J1.1 to J1.32 are not connected.

Table 2–35. HSMC Port B Pin Assignments, Schematic Signal Names, and Functions (Part 4 of 4) (1)

Board

Reference Description

Schematic Signal

Name I/O Standard

Cyclone III LS

Device

Pin Number

Table 2–36. HSMC Connector Component Reference and Manufacturing Information

Board Reference Description Manufacturer

Manufacturing

Part Number

Manufacturer

Website

J1 and J2 HSMC, custom version of QSH-DP

family high-speed socket.

Samtec ASP-122953-01 www.samtec.com

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 57 58

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