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ADSP-21369 EZ-KIT Lite Evaluation System Manual 1-7
Using EZ-KIT Lite
External Memory
The EZ-KIT Lite contains four types of memory: parallel flash (1 MB),
SPI flash (2 Mbit), SRAM (512 Kbit), and SDRAM (128 Mbit). The
flash memories can store user-specific boot code, allowing the board run
as a stand-alone unit. For more information about selecting the boot
device for the processor, see “Boot Mode and Clock Ratio Select Switch
(SW2)” on page 2-8.
Table 1-1 provides start and end addresses of the board’s external
memories.
The parallel flash memory, SDRAM, and SRAM memory connect to the
external memory of the processor. To access the SRAM and flash memo-
ries, use memory addressing via the respective memory bank or use the
DMA controller.
The SDRAM memory connects to the SDRAM controller of the proces-
sor. A set of programmable timing parameters is available to configure the
SDRAM banks to support slower memory accesses. Care must be taken
when configuring the SDRAM control registers. For more information
regarding the setup of the SDRAM controller, please refer to the
ADSP-2136x SHARC Processor Hardware Reference for ADSP-21367/8/9
Processors. An example program is included in the EZ-KIT Lite installa-
tion directory to demonstrate how to set up the SDRAM interface.
Table 1-1. EZ-KIT Lite Evaluation Board External Memory
Start Address End Address Content
0x0020 0000 0x0027 FFFF SRAM memory (~MS0)
0x0400 0000 0x040F FFFF Flash memory (~MS1)
0x0800 0000 0x08FF 0000 SDRAM memory (~MS2)
0x0C00 0000
0x0C00 0000
0x0CFF FFFF
0x0FFF FFFF
Unused chip select (~MS3), for non-SDRAM addresses
Unused chip select (
~MS3), for SDRAM addresses