Salim Badakhshan
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Acer SF314-42 LA-J731P Rev 1.0 Schematic
Technical Specifications
Technical Summary
This Compal FH4FR motherboard, documented under board number LA-J731P revision 1.0, is built on the AMD Renoir Ridge platform. The system memory architecture supports LPDDR4 at 3200MHz and LPDDR4x at 3733-4266MHz, utilizing four 1.1V memory chips. The embedded controller is an ENEKBC9022, and the audio codec is an ALC255 or ALC256. The BIOS is stored on an SPI ROM. For display output, a PS8409 IC handles HDMI 2.1 connectivity. The charging architecture is USBPD-C, managed by a dedicated USBPD-C PD IC. The system includes a KC3810 GPIO extender and a DC/DC power circuit interface.
Technician FAQ
Q: What is the board number and revision for this Compal FH4FR motherboard?
A: The board number is LA-J731P, revision 1.0.
Q: What EC/KBC is used on this motherboard?
A: The embedded controller is an ENEKBC9022.
Q: What is the memory architecture of this motherboard?
A: It supports LPDDR4 at 3200MHz and LPDDR4x at 3733-4266MHz, using four 1.1V memory chips.
Q: What IC handles HDMI output on this motherboard?
A: The PS8409 IC handles HDMI 2.1 output.
Q: What is the charging architecture for this motherboard?
A: The charging architecture is USBPD-C, managed by a USBPD-C PD IC.
Technical data structured and organized by Dr-Bios.com, based on original schematic source analysis.
Technical Specifications
| Parameter | Value |
|---|---|
| Brand | Compal |
| Model | FH4FR |
| Motherboard Manufacturer | Compal Electronics, Inc. |
| Project Code | FH4FR |
| Board Number | LA-J731P |
| Revision | 1.0 |
| Date | 2019-11-28 |
| CPU Platform | AMD Renoir Ridge |
| Document Number | FH4FR_LA-J731P |
| EC / KBC | ENEKBC9022 |
| Audio Codec | ALC255/ALC256 |
| BIOS / SPI Flash | SPI ROM |
| RAM Type | LPDDR4:3200Mhz/LPDDR4x:3733-4266Mhz |
| RAM Architecture | 1.1Vx4pcs |
| RAM Quantity / Slots | 4 |
| LAN IC | PS8409 |
| WiFi / WLAN IC | WLAN M.2 Conn. |
| HDMI Level Shifter | PS8409 |
| Card Reader IC | KC3810 |
| USB Hub IC | USBPD-C PD IC |
| Charging IC | USBPD-C PD IC |
| Charger Architecture | USBPD-C |
| Power IC(s) | DC/DC |
| GPU Type | GFX PCIE |
| Graphics Architecture | GFX PCIE Port0 Port4 |
| dGPU Chip Number | GFX PCIE |
| Thermal Sensor | Fan Conn. |
Technical Summary
This Compal FH4FR motherboard, documented under board number LA-J731P revision 1.0, is built on the AMD Renoir Ridge platform. The system memory architecture supports LPDDR4 at 3200MHz and LPDDR4x at 3733-4266MHz, utilizing four 1.1V memory chips. The embedded controller is an ENEKBC9022, and the audio codec is an ALC255 or ALC256. The BIOS is stored on an SPI ROM. For display output, a PS8409 IC handles HDMI 2.1 connectivity. The charging architecture is USBPD-C, managed by a dedicated USBPD-C PD IC. The system includes a KC3810 GPIO extender and a DC/DC power circuit interface.
Technician FAQ
Q: What is the board number and revision for this Compal FH4FR motherboard?
A: The board number is LA-J731P, revision 1.0.
Q: What EC/KBC is used on this motherboard?
A: The embedded controller is an ENEKBC9022.
Q: What is the memory architecture of this motherboard?
A: It supports LPDDR4 at 3200MHz and LPDDR4x at 3733-4266MHz, using four 1.1V memory chips.
Q: What IC handles HDMI output on this motherboard?
A: The PS8409 IC handles HDMI 2.1 output.
Q: What is the charging architecture for this motherboard?
A: The charging architecture is USBPD-C, managed by a USBPD-C PD IC.
Technical data structured and organized by Dr-Bios.com, based on original schematic source analysis.
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