Analog Devices ADSP-21369 system manual External Memory, Start Address End Address Content

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 1-1provides start and end addresses of the board’s external memories.

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		0x0CFF FFFF		Unused chip select (~MS3), for non-SDRAM addresses
0x0C00 0000		0x0FFF FFFF		Unused chip select (~MS3), for SDRAM addresses

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.

ADSP-21369 EZ-KIT Lite Evaluation System Manual 1-7