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Firmware Upgrading & Diagnostic Software
5.
SDRAM (SDRAM OR DDR-RAM)
Nucleus Name
DS_SDRAM_WriteRead
Nucleus Number
400
Description
Check all data lines, address lines and memory locations of the RAM
Technical
-
Test the data bus
-
Test the address bus
-
Test the integrity of the device itself (memory locations)
Execution Time
11 seconds for 32 Mb
23 seconds for 64 Mb
User Input
None
Error
Number
Description
40000
The write-read test succeeded
40001
The data bus contains an error
40002
The address bus contains an error
40003
The RAM itself contains an error
Example
DS:> 400
040000:
Test OK @
Nucleus Name
DS_SDRAM_WriteReadFast
Nucleus Number
401
Description
Check all data lines and address lines of the RAM
Technical
-
Test the data bus
-
Test the address bus
Execution Time
Less than 1 second
User Input
None
Error
Number
Description
40100
The write-read test succeeded
40101
The data bus contains an error
40102
The address bus contains an error
Example
DS:> 401
040100:
Test OK @
Nucleus Name
DS_SDRAM_Write
Nucleus Number
402
Description
Write to a specific un-cached memory address
Technical
-
Decode the user input and check its ranges and alignment on 4 bytes
-
Write the data to the RAM
Execution Time
Less than 1 second
User Input
1. The location that must be modified
(RAM starts at address 0xA0000000)
2. The value to put on the selected location
Error
Number
Description
40200
Writing to the RAM succeeded
40201
Writing to the RAM failed; Wrong user input
40202
Address is not dividable by 4
Example
DS:> 402 0xa1000010 0xad112222
040200:
Test OK @
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