Dell Latitude 7320 7420 7520 - GDC31 LA-K371P Schematic
Technical Specifications
Technical Summary
This Dell Compal LA-K371P Rev 1.0 (A00) motherboard, dated 2020-10-28, is designed for the GDC31/GDC41/GDC50X12 TGL UMA MB platform. It is built around the Intel Tiger Lake U42 UP3 CPU platform with LPDDR4-X memory down architecture supporting up to 4267MHz. The system firmware is stored on a W25R256JVEIN 256Mb SPI flash in a WSON8 package with RPMC. Embedded controller functionality is provided by an SMSC MEC5107(5200) KBC, with both MEC5107 ES and MEC5200 component options noted. Audio is handled by an ALC3281 HDA codec with an ALC1309 amplifier for secondary speakers. Display connectivity includes an HDMI 2.0 port with a PS8409 re-timer and an SLG C55544BVTR controller. The board features a Realtek RTS5242 SD 4.0 card reader, Intel CNVi for WLAN/BT, and dual TPM options from NUVOTON NPCT750 and ST ST33HTPH. Power delivery and USB-C PD are managed by TPS65992SA controllers.
Technician FAQ
Q: What BIOS flash IC is used on this motherboard?
A: The BIOS flash IC is a Winbond W25R256JVEIN, a 256Mb SPI flash in a WSON8 package with RPMC support.
Q: Is the EC/KBC programmable on this motherboard?
A: Yes, the SMSC MEC5107(5200) KBC is programmable, with both MEC5107 ES and MEC5200 component options explicitly listed in the schematic.
Q: What TPM options are available on this motherboard?
A: The motherboard supports two
Technical Specifications
| Parameter | Value |
|---|---|
| Brand | Dell |
| Model | GDC31/GDC41/GDC50X12 TGL UMA MB |
| Motherboard Manufacturer | Compal |
| Board Number | LA-K371P |
| Revision | 1.0 (A00) |
| Date | 2020-10-28 |
| CPU Platform | Tiger Lake U42 UP3 |
| EC / KBC | SMSC MEC5107(5200) |
| EC/KBC Programmable | MEC5107 ES Component, MEC5200 Component |
| Audio Codec | ALC3281 |
| BIOS Flash Exact Model | W25R256JVEIN |
| BIOS Flash Capacity | 256Mb |
| BIOS Flash Package | WSON8 w/RPMC |
| RAM Type | LPDDR4-X |
| RAM Architecture | Memory Down |
| RAM Quantity / Slots | LPDDR4X 3200MHz for TGL-U (MAX 4267MHz) |
| Card Reader IC | RTS5242 |
| LAN IC | Intel CNVi |
| WiFi / WLAN IC | WLAN Module Down WLAN+BT/CNVi |
| HDMI Level Shifter | PS8409 |
| TPM | NUVOTON NPCT750, ST ST33HTPH |
| USB Hub IC | TS3USB221, TS3DS10224 |
| Charging IC | TPS65992SA |
| Power IC(s) | TPS65992SA |
| Audio Amplifier | ALC1309 |
| Fingerprint IC | BCM58202 |
| Smart Card IC | TDA8034HN |
| HDMI Controller | SLG C55544BVTR |
Technical Summary
This Dell Compal LA-K371P Rev 1.0 (A00) motherboard, dated 2020-10-28, is designed for the GDC31/GDC41/GDC50X12 TGL UMA MB platform. It is built around the Intel Tiger Lake U42 UP3 CPU platform with LPDDR4-X memory down architecture supporting up to 4267MHz. The system firmware is stored on a W25R256JVEIN 256Mb SPI flash in a WSON8 package with RPMC. Embedded controller functionality is provided by an SMSC MEC5107(5200) KBC, with both MEC5107 ES and MEC5200 component options noted. Audio is handled by an ALC3281 HDA codec with an ALC1309 amplifier for secondary speakers. Display connectivity includes an HDMI 2.0 port with a PS8409 re-timer and an SLG C55544BVTR controller. The board features a Realtek RTS5242 SD 4.0 card reader, Intel CNVi for WLAN/BT, and dual TPM options from NUVOTON NPCT750 and ST ST33HTPH. Power delivery and USB-C PD are managed by TPS65992SA controllers.
Technician FAQ
Q: What BIOS flash IC is used on this motherboard?
A: The BIOS flash IC is a Winbond W25R256JVEIN, a 256Mb SPI flash in a WSON8 package with RPMC support.
Q: Is the EC/KBC programmable on this motherboard?
A: Yes, the SMSC MEC5107(5200) KBC is programmable, with both MEC5107 ES and MEC5200 component options explicitly listed in the schematic.
Q: What TPM options are available on this motherboard?
A: The motherboard supports two
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