Altera Nios Development Board Manuel d'utilisateur Page 18
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- Table des matières
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Noté. / 5. Basé sur avis des utilisateurs
2–10 Altera Corporation
Nios Development Board Reference Manual, Stratix II Edition July 2005
Seven-Segment LEDs (U8 & U9)
Figure 2–2. Push Button Switches & Individual LEDs
Seven-Segment
LEDs (U8 & U9)
U8 and U9 are connected to the Stratix II device so that each segment is
individually controlled by a general-purpose I/O pin. When the Stratix II
pin drives logic 0, the corresponding LED turns on. See Figure 2–3 for
Stratix II pin-out details.
Figure 2–3. Seven-Segment LEDs
SRAM Memory
(U35 & U36)
U35 and U36 are IDT IDT71V416S, 512 Kbyte x 16-bit asynchronous
SRAM devices. They are connected to the Stratix II device so they can be
used by a Nios II embedded processor as general-purpose memory. The
two 16-bit devices can be used in parallel to implement a 32-bit wide
memory subsystem. The factory programmed Nios II reference design
identifies these SRAM devices in its address space as a contiguous
1Mbyte, 32-bit-wide, zero-wait-state main memory.
The SRAM devices share address and data connections with the flash
memory and the Ethernet MAC/PHY device. For shared bus
information, see Appendix A, Shared Bus Table.
- Nios Development Board 1
- MNL-N832T4-1.2 2
- Contents 3
- Shared Bus Table 1 4
- About this Manual 5
- How to Contact 6
- Typographic 7
- Conventions 7
- July 2005 8
- Typographic Conventions 8
- Introduction 9
- 1–2 Altera Corporation 10
- General Description 10
- Factory 11
- Programmed 11
- Reference 11
- 1–4 Altera Corporation 12
- Board Components 13
- Stratix II Device 15
- Push-Button 17
- Switches (SW0 17
- Individual LEDs 17
- (D0 - D7) 17
- Seven-Segment 18
- LEDs (U8 & U9) 18
- SRAM Memory 18
- (U35 & U36) 18
- Flash Memory 19
- SDRAM Memory 20
- Ethernet 22
- MAC/PHY (U4) 22
- Serial Port 22
- Connectors (J19 22
- & J27) 22
- Expansion 23
- Prototype 23
- Connectors 23
- (PROTO1 & 23
- Altera Corporation 2–17 25
- Note to Figure 2–8 25
- 2–18 Altera Corporation 26
- Altera Corporation 2–19 27
- Notes to Figure 2–10 27
- CompactFlash 28
- Connector 28
- Connector (J25) 31
- 2–24 Altera Corporation 32
- Mictor Connector (J25) 32
- Configuration 33
- Controller 33
- Device (U3) 33
- Factory & User 34
- Configurations 34
- Flash Memory Partitions 35
- User Configuration 36
- Factory Configuration 36
- Persistent Data 36
- Configuration-Status LEDs 37
- SW8 – CPU Reset 38
- SW9 – Factory Config 38
- SW10 – Reset, Config 38
- Connectors (J24 39
- & J5) 39
- 2–32 Altera Corporation 40
- ° compared to J24 41
- Clock Circuitry 42
- Power-Supply 43
- Circuitry 43
- 2–36 Altera Corporation 44
- Power-Supply Circuitry 44
- Appendix A. Shared Bus Table 45
- Shared Data 46
- WE_n.ACC 47
- A–4 Altera Corporation 48
- July 2005 48
- Description 48
- Appendix B. Restoring the 49
- B–2 Altera Corporation 50
- Appendix C. Connecting to the 51
- Board via Ethernet 51
- Connecting the 52
- LCD Screen 52
- Obtaining an IP 52
- LAN Connection 53
- Point–to–Point Connections 54
- Browsing to Your 55
- C–6 Altera Corporation 56
- Browsing to Your Board 56
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