Meaning
Active-low chip-select for an SPI device, commonly the system firmware/BIOS flash when used in the boot firmware bus.
TCS Pune
SPI_CS#
SPI_CS#
Signal meaning plus live references derived from existing TCS repair checklists and solved cases.
Power Sequence
Firmware-access activity is expected during early boot after the required standby rails, EC/PCH power and reset prerequisites are valid.
Observed checklist stages: BIOS / SPI (62)
Related IC / Component Pins
No board-specific component/pin references have been discovered yet.
Boards Containing SPI_CS#
LA-L992P, LA-L111P1 related test(s)LA-9632P1 related test(s)Wistron SouthPeak13 TGL A00 19817Rev A00 · 1 related test(s)NM-D351Rev 1.0 · 1 related test(s)NM-B9011 related test(s)Quanta ZGD 2023 RPL-H_ZYP-V02-RAMP_20230814-acer1 related test(s)Quanta Z8E r1ARev 1A · 1 related test(s)Quanta G7H R1ARev 1A · 1 related test(s)QUANTA_R33_UMA_DIS_REV_1A_HP_Pavilion G4_DA0R33MB6F0 INTEL_.PDF1 related test(s)QUAKEL14 RPL (213247-1 W36MN)1 related test(s)NM-E541, NM-E451Rev 1.0 · 1 related test(s)NM-E211, NM-D011Rev 0.1 · 1 related test(s)NM-D9611 related test(s)NM-C421Rev 1.0 · 1 related test(s)NM-911, NM-B9111 related test(s)NM-A9311 related test(s)M1098028-0081 related test(s)LA-J551P, LA-H105PRev 02 · 1 related test(s)NM-B701Rev 0.1 · 1 related test(s)NM-B453Rev 0.1 · 1 related test(s)NM-B452Rev 0.2 · 1 related test(s)NM-D521Rev 1.0 · 1 related test(s)LA-K491P1 related test(s)NM-E401Rev 0.2 · 1 related test(s)LCFC NM-D522_REV 0.2_AMD PDF1 related test(s)NM-C871Rev 0.1 · 1 related test(s)LATITUDE 3301 18769-1 WASP 13 CS A00 20190307Rev A00 · 1 related test(s)LA-L655P, LA-L652P1 related test(s)LA-L161PRev 0.1 · 1 related test(s)DAX8QAMB8D01 related test(s)6050A3136201, 6050A3140901Rev A01 · 1 related test(s)DA0G3HMB8D0Rev 1A · 1 related test(s)LA-J951PRev 0.1 · 1 related test(s)LA-E791P, LA-E801P, LA-E802P, LA-G07DPRev 1.0 · 1 related test(s)LA-K201PRev 1.0 · 1 related test(s)LA-L181PRev 1A · 1 related test(s)NM-D011Rev 0.1 · 1 related test(s)FX505GT REV2.0Rev 2.0 · 1 related test(s)FX505GD FX505GE v2.01 related test(s)FAROE DIS X32 MB MV (18742-1 0GG02) PDF1 related test(s)LA-G521P1 related test(s)Dell Wistron Cyborg TGL - 198561 related test(s)LA-F611P1 related test(s)LA-K034PRev 1.0 · 1 related test(s)LA-J081P, LA-J091P1 related test(s)Dell Inspiron 3064 3464 3264 AIO - 15107-11 related test(s)LA-L241P1 related test(s)LA-H331PRev 1.0 · 1 related test(s)LA-K662PRev 1.0 · 1 related test(s)LA-M366P, LA-L241PRev 1.0 · 1 related test(s)LA-J371PRev 1.0 · 1 related test(s)LA-J143P, LA-J141P, LA-J142P, LA-G172PRev 1.0 · 1 related test(s)LA-H431P1 related test(s)LA-G07EP, LA-G07DP, LA-G071P, LA-G072P, LA-G079P, LA-G07APRev 1.0 · 1 related test(s)Acer TravelMate P214 - DAZ8IAMBACO - Z8IA-ZAIA Z8I1 related test(s)LA-J871PRev 1.0 · 1 related test(s)LA-J861PRev 1A · 1 related test(s)ASUS G531GW - G711GW REV1.5Rev 1.5 · 1 related test(s)LA-D071PRev 1.0 · 1 related test(s)6-71-NL4M0-D02 NL50MU SM 202109281 related test(s)213108-11 related test(s)NM-D2111 related test(s)
Scope References
LA-L992P, LA-L111P — Chip-select pulse bursts during start-up
LA-9632P — Chip-select pulse bursts during start-up
Wistron SouthPeak13 TGL A00 19817 — Chip-select pulse bursts during start-up
NM-D351 — Chip-select pulse bursts during start-up
NM-B901 — Chip-select pulse bursts during start-up
Quanta ZGD 2023 RPL-H_ZYP-V02-RAMP_20230814-acer — Chip-select pulse bursts during start-up
Quanta Z8E r1A — Chip-select pulse bursts during start-up
Quanta G7H R1A — Chip-select pulse bursts during start-up
QUANTA_R33_UMA_DIS_REV_1A_HP_Pavilion G4_DA0R33MB6F0 INTEL_.PDF — Chip-select pulse bursts during start-up
QUAKEL14 RPL (213247-1 W36MN) — Chip-select pulse bursts during start-up
NM-E541, NM-E451 — Chip-select pulse bursts during start-up
NM-E211, NM-D011 — Chip-select pulse bursts during start-up
NM-D961 — Chip-select pulse bursts during start-up
NM-C421 — Chip-select pulse bursts during start-up
NM-911, NM-B911 — Chip-select pulse bursts during start-up
NM-A931 — Chip-select pulse bursts during start-up
M1098028-008 — Chip-select pulse bursts during start-up
LA-J551P, LA-H105P — Chip-select pulse bursts during start-up
NM-B701 — Chip-select pulse bursts during start-up
NM-B453 — Chip-select pulse bursts during start-up
NM-B452 — Chip-select pulse bursts during start-up
NM-D521 — Chip-select pulse bursts during start-up
LA-K491P — Chip-select pulse bursts during start-up
NM-E401 — Chip-select pulse bursts during start-up
LCFC NM-D522_REV 0.2_AMD PDF — Chip-select pulse bursts during start-up
NM-C871 — Chip-select pulse bursts during start-up
LATITUDE 3301 18769-1 WASP 13 CS A00 20190307 — Chip-select pulse bursts during start-up
LA-L655P, LA-L652P — Chip-select pulse bursts during start-up
LA-L161P — Chip-select pulse bursts during start-up
DAX8QAMB8D0 — Chip-select pulse bursts during start-up
6050A3136201, 6050A3140901 — Chip-select pulse bursts during start-up
DA0G3HMB8D0 — Chip-select pulse bursts during start-up
LA-J951P — Chip-select pulse bursts during start-up
LA-E791P, LA-E801P, LA-E802P, LA-G07DP — Chip-select pulse bursts during start-up
LA-K201P — Chip-select pulse bursts during start-up
LA-L181P — Chip-select pulse bursts during start-up
NM-D011 — Chip-select pulse bursts during start-up
FX505GT REV2.0 — Chip-select pulse bursts during start-up
FX505GD FX505GE v2.0 — Chip-select pulse bursts during start-up
FAROE DIS X32 MB MV (18742-1 0GG02) PDF — Chip-select pulse bursts during start-up
LA-G521P — Chip-select pulse bursts during start-up
Dell Wistron Cyborg TGL - 19856 — Chip-select pulse bursts during start-up
LA-F611P — Chip-select pulse bursts during start-up
LA-K034P — Chip-select pulse bursts during start-up
LA-J081P, LA-J091P — Chip-select pulse bursts during start-up
Dell Inspiron 3064 3464 3264 AIO - 15107-1 — Chip-select pulse bursts during start-up
LA-L241P — Chip-select pulse bursts during start-up
LA-H331P — Chip-select pulse bursts during start-up
LA-K662P — Chip-select pulse bursts during start-up
LA-M366P, LA-L241P — Chip-select pulse bursts during start-up
SPI CLK / CS / MOSI / MISO
Firmware-bus activity reference from the existing Scope & Waveform Library.
Open a board checklist containing this signal and use its Scope Compare action for expected-vs-observed capture.
Solved Cases Involving SPI_CS#
No structured solved case currently references this signal.
Reference knowledge is diagnostic guidance only. Confirm the exact board revision, schematic, voltage state, timing and prerequisites before drawing a fault conclusion.