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
Indexed motherboard components
Open a component to see every indexed schematic that uses the same part.
LA-K371P
Board Number
Tiger Lake U42 UP3
CPU Platform
SMSC MEC5107(5200)
EC / KBC
ALC3281
Audio Codec
W25R256JVEIN
BIOS / EC Flash
LPDDR4/X
RAM Type
RTS5242
Card Reader IC
WLAN Module Down WLAN+BT/CNVi
WiFi / WLAN
PS8409
Signal Conditioning IC
TS3DS10224
USB Controller
TS3USB221
USB Controller
TPS65992SA
Charging / PD IC
TPS65992SA
Power IC
Indexed motherboard components
Open a component to see every indexed schematic that uses the same part.
LA-K371P
Board Number
Tiger Lake U42 UP3
CPU Platform
SMSC MEC5107(5200)
EC / KBC
ALC3281
Audio Codec
W25R256JVEIN
BIOS / EC Flash
LPDDR4/X
RAM Type
RTS5242
Card Reader IC
WLAN Module Down WLAN+BT/CNVi
WiFi / WLAN
PS8409
Signal Conditioning IC
TS3DS10224
USB Controller
TS3USB221
USB Controller
TPS65992SA
Charging / PD IC
TPS65992SA
Power IC
Attachments
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