Introduzione
Questa guida contiene una selezione di foto e un sommario dell'identificazione dei chip per la scheda principale di Steam Deck, prodotto da Valve. Dai un'occhiata al nostro smontaggio di Steam Deck per maggiori informazioni.
Ringraziamenti speciali vanno al membro della community CChin per il suo contributo!
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Identificazione CI, Pt. 1:
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Processore Applicativo AMD/Valve 100-000000405 Quad-Core con GPU
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Memoria SDRAM Micron MT62F1G32D4DR-031 WT:B da 4 GB LPDDR5
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Memoria Seriale NOR FLASH Winbond W25Q128JW da 16 MB
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Ricevitore DisplayPort a MIPI Singolo Analogix ANX7580
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Amplificatore Audio Cirrus Logic CS35L41B
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Carica Batterie Li-Ion USB Tipo-C Maxim Integrated MAX77961
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Driver Retroilluminazione LED O2Micro OZ536
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Identificazione CI, Pt. 2:
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Controller Digitale a 6 Fasi Monolithic Power Systems MP2845
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Sistema Alimentazione Monolitico MP86902B con Stadio di Potenza di 35A
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Stadio di potenza Monolithic Power Systems MP86902B da 35 A
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Probabilmente Convertitore Buck Sincrono Monolithic Power Systems NB688C
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Convertitore Buck Sincrono Monolithic Power Systems NB691
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Convertitore Buck Sincrono Monolithic Power Systems NB690G
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Probabilmente Convertitore Buck Sincrono Monolithic Power Systems NB591
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Identificazione CI:
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Controller Embedded ITE Tech IT5570VG (probabilmente)
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Controller Lettore Card O2Micro OZ711
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Controller Erogazione Potenza USB Tipo-C & USB Maxim Integrated MAX77958
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Convertitore Buck Sincrono Monolithic Power Systems NB691
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Probabilmente Convertitore Buck Sincrono Monolithic Power Systems NB591
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Switch Analogico SPDT USB 2.0 Diodes Incorporated PI3USB102
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Interruttore di carico Texas Instruments TPS22976
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23 commenti
Interesting how Valve went with a full-custom APU from AMD. I thought they’d use an off-the-shelf chip like the 4500U.
Yeah i know what you mean!
They most likely they where wanting it to not be that thick,
so not like a laptop or desktop CPU for it,
Due to it being kinda thick!
I assume the only major difference between this and an off the shelf APU is that this APU just has everything the steam deck does not utilize disabled or removed for power consumption reasons. I doubt it goes much deeper than that.
Alyx -
Good Point
See what you mean
The 4500u has 6 EC Vega GPU, while the Steameck APU has an 8 ECU RDNA 2 GPU. Plus the custom APU gives them more control than a OTS apu.
I doubt it goes much deeper than that
There are actually some differences, it has many differences than typical off-the-shelf APUs, now I don't know how much is firmware and how much is actually silicon but they had a section with AMD engineers that go into detail, some of my takeaways is that inbetween cycles, if it's done doing what it was it goes into a very low power mode, and the other one being that they really went for consistency and not turbo clocks and stuff
Scribble -
On step 3 there are 3 chips marked with dark blue which should be a USB switch, they look like they might be the TPS2276 load switch. The package does not match with the package from the USB switch datasheet in any case.
CazH -
There’s not much to disable.
And it’s probably not custom APU for them, but something that Dell haven;t bought.
They needed to go to this strange mix of zen2+radeon6xxx mix, because only zen2 was low-power then and starting from radeon 6xxxx it provides RayTracing and is more energy efficient then older chips.
Mobile zen3 wasn’t released then. Now they would go this route.
Microsoft, not Dell. Rumour has it that this was a part originally designed for an MS mobile device that the pandemic killed off: hence the presence of a machine vision IP block on the die that the Deck doesn't use and is most unlikely ever to.
Can i buy a part? Part name is Analogix ANX7580 DisplayPort to Single MIPI Receiver
MUHAMMAD FIKRI HAIKAL -