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- #### The Chipset in a Breakdown:
- ##### Platform Controller Hub: includes Integrated Sensor Hub , SMBUS, Firmware Hub [CM238/HM175-for-example - iMac 2017]
- Intel Z270 - Our Chipset
- 1. SATA Controller
- 2. USB Controller
- 3. PCI-E Controller
- 4. Intel MEI + \[if had CSME]
- 5. Clock Control....
- 6. Fan Control
- 7. BIOS
- 8. Sensors...
- 9. an whats called an ARC Core in the PCH runs Intel MEI....
- ##### SuperIO is legacy_i_o also called EC Embedded Controller [ITE IT8987E - iMac 2017]
- Nuvoton NCT6795D - The Like equivalent chip it likely has it says...
- 1. for GPIO [FAN/RGB/SENSORS] - Nuvoton Provides PCH Exposes
- 2. for PS/2 [Keyboard/Mouse]
- 3. for SERIAL UART Paralell Ports.... [Printer/Terminal/Debug]
- 4. for Hardware Monitoring [Voltage/TEMP/FanSpeed]
- 5. is called SuperI/O or EC Embedded Controller..
- 6. is Interfaced to i2c/SMBUS...
- 7. LPC Controller for BIOS
- ##### SPI Flash Controller is ROM/BIOS/EFI Storage [Winbond W25Q128FV - iMac 2017]:
- Winbond 25Q128JV - 128MB/256MB 16/32 MB SPI NOR Flash Memory
- ##### Intel Management Engine Interface Co-Processor [in the CM238 PCH - iMac 2017]:
- The Platform Controller Hub Co-Processor
- ##### Clock Generator:
- ICS 9DB403 or similar chip...
- 1. Generates base Clock BCLK and PCI-e Clocks...
- ##### Voltage Regulator[Intesil ISL95866 - iMac 2017]: CPU Power Delivery
- Intersil ISL69138 - This is the PWM/VRM Controller....
- ##### I2C & SMBus:
- 1. SPD RAM Timing reads from DIMMS
- 2. Fan Control , Communicates with SUPER I/O
- 3. RGB Lighting Control - LED for example Laptop Light... or Camera Light.. or Apple Light..
- ##### TPM Trusted Platform Module:
- Infineon SLB9665 - Which TPM Chip...
- 1. Handles everything a TPM Handles...
- ##### RGB LCD Controller [NXP PCA9552 - iMac 2017]:
- NXP PCA9633 - i2c controlled
- ##### Voltage Monitor [Richtek RT3607 - iMac 2017]:
- Richtek RT3607
- ##### Power Sequencing [TI TPS51285A - iMac 2017]:
- TI TPS51362
- ##### LAN [Intel I219-V - iMac 2017]:
- Intel I219-V
- ##### Audio [CS8409/CS42L43/CS4208 - iMac 2017]:
- Realtek ALC1220
- ##### Amplifier [MAXIM MAX98357 MAX97220 / CS35L41 / TI TPA6139A2 - iMac 2017]:
- TI NE5532
- ##### PCI-e 3.0
- 24 Lanes
- ##### SATA
- 6 Port 6GB/s
- ##### USB 3.0 [ASMedia ASM2142 - iMac 2017]
- ASMedia ASM2142 adds 10Gb/s
- Up to 14 Ports....
- ##### Voltage Rails [ISL95866 - iMac 2017]:
- PLL Controller is the VRM Controller
- ##### Power States:
- S0ix S3/S4/S5 State Controller - little word-sized registers in the Chips themself that the PCH Controller Controls...
- ##### Mosfets [NCP302045 - iMac 2017]:
- NCP302045 - Used by the PWM Controller
- #### Apple Proprietary:
- Display - Display
- Facetime HD Camera - USB Camera
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