Philips DVDR3575H/, Service Manual

Page: 42 / 195

Reference : SGP_AVS_SW_ATLAS-05-05 Classification : COMPANY RESTRICTED
Version : 0.17 Project : ATLAS_DSW
Status : Proposed Chapter : User Manual
Date : 2006-09-12 Section : Diagnostic Software (Leco+)
© Philips Electronics N.V. 2006
Philips Semiconductors Page 22 of 124
3.4 SDRAM (SDRAM OR DDR-RAM)
1
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 @
2
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 @
3
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 @
4
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