Philips DVDR615 Service Manual page 24

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EN 24 5. DVDR615/69
Nucleus Name
Nucleus Number
Description
Technical
Execution Time
User Input
Error
Example
Nucleus Name
Nucleus Number
Description
Technical
Execution Time
User Input
Error
Example
FLASH
Nucleus Name
Nucleus Number
Description
Technical
Execution Time
User Input
Error
Example
Nucleus Name
Nucleus Number
Description
Technical
Execution Time
User Input
Error
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Diagnostic Software
DS_SDRAM_Write
402
Write to a specific memory address
- Decode the user input and check its ranges and alignment on 4 bytes
- Write the data to the SDRAM
Less than 1 second
1. The location that must be modified
( SDRAM starts at address 0xA0000000 )
2. The value to put on the selected location
Number Description
40200 Writing to the SDRAM succeeded
40201 Writing to the SDRAM failed; Wrong user input
40202 Address is not dividable by 4
DS:> 402 0xa1000010 0xad112222
040200:
Test OK @
DS_SDRAM_Read
403
Read from a specific memory address
- Decode the user input and check the ranges
- Read from the SDRAM and return this info to the user
Less than 1 second
The location from which the data must be read
( SDRAM starts at address 0xA0000000 )
Number Description
40300 Reading from the SDRAM succeeded
40301 Reading from the SDRAM failed; Wrong user input
40302 Address is not dividable by 4
DS:> 403 0xa1000010
040300: Value read = 0xAD112222
Test OK @
DS_FLASH_DevTypeGet
500
Get the device (revision) type information of the FLASH IC. (type, manufacturer, device ID
and size)
- Set the timing for the flash writing
- Write a command sequence to determine device type information
- Return the information to the user
Less than 1 second
None
Number Description
50000 Getting the information from the FLASH succeeded
50001 Getting the information from the FLASH failed
DS:> 500
050000: Found FLASH memory:
NOR AMD 29DL640G 8MB,NOR AMD 29DL640G 8MB
Test OK @
DS_FLASH_WriteRead
501
Check whether the FLASH can be written to and read from
- Find the test segment in flash
- Read the data into SDRAM
- Modify the data
- Write this data from SDRAM to FLASH and verify it by reading back again
Less than 1 seconds.
None
Number Description
50100 The FLASH write-read test succeeded
50101 The test segment could not be found
50102 All bits is the TEST region are filled with 0 (region exhausted)