EP2S180 Datasheet, PDF (33/58 Pages) Altera Corporation – DSP Development Board

Board Components & Interfaces
Flash Memory (U17)
U17 is a 16-Mbyte AMD AM29LV128M flash memory device connected
to the Stratix II device. It can be used for two purposes:
■ A Nios II embedded processor implemented in the Stratix II device
can use the flash as general-purpose readable memory and
nonvolatile storage.
■ The flash memory can hold a Stratix II device configuration file that
is used by the configuration controller to load the Stratix II device at
power-up.
Refer to Table 2–21 for Stratix II pin-outs for flash memory device U17.
Hardware configuration data that implements the sines reference design
is prestored in this flash memory and configures the Stratix II device with
this design on boot up. A Nios II reference design can identify the 16-
Mbyte flash memory in its address space, and can program new data
(either new Stratix II configuration data, Nios II embedded processor
software, or both) into flash memory. For an example of programming
the flash memory, refer to “Programming Example for the 2S180 DSP
Development Board” on page 2–6.
Table 2–21. Flash Memory (U17) (Part 1
of 2)
Pin Name
FLASH_A0
FLASH_A1
FLASH_A2
FLASH_A3
FLASH_A4
FLASH_A5
FLASH_A6
FLASH_A7
FLASH_A8
FLASH_A9
FLASH_A10
FLASH_A11
FLASH_A12
FLASH_A13
FLASH_A14
Pin Number
AF30
AF29
AE30
AE29
AG32
AG31
AF32
AF31
AE32
AE31
AD32
AD31
AB28
AB27
AC32
Altera Corporation
Core Version a.b.c variable
2–25
Stratix II EP2S180 DSP Development Board Reference Manual