Syscon Thermal Configs

Description

The thermal config is an area inside syscon where are stored the settings related with fan speed control
In Mullion syscon series is located at offset 0x3300, length 0x200, and is "protected" by a checksum located at 0x34FE (the last 2 bytes of the 0x200 bytes chunk)
In Sherwood syscon series is located at 0x250, we consider it have a length of 0x200 too, and is "protected" by a checksum located at 0x7FE (the last 2 bytes of a 0x800 bytes chunk including the thermal config and other eeprom areas)

The thermal configs are specific for a motherboard model, usually all motherboards of the same model shares the same thermal config, but not always, it has been found different thermal configs used in the same motherboard

Official thermal configs

This configs are orientative, the purpose of this list is to collect all the officials for a better understanding of them, if you find other official config not in the list please add it, but dont publish here any custom config, the scope of this list is limited only to the original settings used by sony
This wiki page is inspired by this thread, the coordinate graph images from that thread are made by me (sandungas) and eventually i will upload new versions of them to wiki, but not yet because at the time of writing this (may 2021) are not the final version

When talking about thermal configs is very convenient to use an unique identifyers for them, and the checksum "protection" used by syscon is perfect for that purpose, in Mullion series this is specially accurate because that cheksum is the checksum of the exact thermal config (except the last 2 bytes). In Sherwood is not so easy because the cheksum includes other areas of the eeprom so is not exactly an unique identifyer of the thermal config, for that reason in the Mullion thermal configs is indicated the CRC32 (of the 0x200 bytes area only, calculated in PC)

crc: 79BA37D0 (csum: 7115)

• Found in PS3 models:
  • CECHAxx and CECHBxx with COK-001 motherboard
  • CECHCxx and CECHDxx with COK-002 motherboard

33 40 48 4D 5A 66 73 80 99 FF 00 4A 00 4B 00 4C
00 4D 00 4E 00 4F 00 50 00 51 00 52 00 55 00 00
00 3C 00 3D 00 43 00 44 00 47 80 47 00 48 80 48
00 49 33 FF 01 00 FF FF FF FF FF FF FF FF FF FF

33 40 48 4D 5A 66 73 80 99 FF 00 53 00 54 00 55
00 56 00 57 00 58 00 59 00 5A 00 5B 00 5F 00 00
00 30 00 47 00 4D 00 4E 00 50 80 50 00 51 80 51
00 52 33 FF 01 00 FF FF FF FF FF FF FF FF FF FF

33 40 48 4D 5A 66 73 80 99 FF FF FF FF FF FF FF
FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
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FF FF 33 FF 01 00 00 FF FF FF FF FF FF FF FF FF

33 40 48 4D 5A 66 73 80 99 FF 00 3C 00 3D 00 3E
00 3F 00 40 00 41 00 42 00 43 00 44 00 47 00 00
00 27 00 30 00 36 00 37 80 3A 00 3B 00 3C 80 3C
00 3D 33 FF 01 00 FF FF FF FF FF FF FF FF FF FF

33 40 48 4D 5A 66 73 80 99 FF FF FF FF FF FF FF
FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
FF FF 33 FF 01 00 00 FF FF FF FF FF FF FF FF FF

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54 00 55 00 02 00 5E 00 5F 00 02 00 FF FF FF FF
02 00 46 00 47 00 02 00 FF FF FF FF 02 00 FF FF
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FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
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FF FF FF FF FF FF FF FF FF FF FF FF FF FF 15 71