DC-SCI Debug Interposer

The open hardware Data Center Secure Control Module (DC-SCM) Debug Interposer exposes IO interfaces provided by the Data Center Secure Control Interface (DC-SCI) rev.2.x. It aids DC-SCM software development and server platform bringup. All single-ended signals are exposed on 2.54 mm headers to simplify the debugging setup. The on-board SOP-16 sockets provide an easy way for BIOS injection. The DC-SCM Debug Interposer board also exposes two USB headers connected to PCIE_HPMROOT_5 (compatible with HPM Common Circuit Type 1 Design Specification).

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Manufacturer	Manufacturer part number	Description
Texas Instruments	TLV76701DRVT	LDO voltage regulator 1A, Vin: 2.5V-16V, Vout: 0.8V-14.6V; Iq: 50uA; Vdrop@200mA: 200mV; Vdrop@1A: 900mV;
Renesas Electronics	UPD720202K8-711-BAA-A	USB Host Controller USB 3.0 USB Interface 48-QFN (7x7)
Winbond	W25Q80DVUXIE TR	FLASH - NOR Memory IC 8Mbit SPI - Quad I/O 104 MHz 8-USON (2x3)
Diodes Incorporated	AP62301WU-7	DC-DC Switching Synchronous Buck Regulator, Adjustable, 4.2V-18Vin, 0.8V-7V/3A out, TSOT-26-6
Amphenol	ME1016813401101	Standard Card Edge Connectors Mini Cool Edge, Gen Z EDSFF OCP 30 168 pins SMT Straddle Mount
Samtec	TSM-105-01-L-DV-A	Pin Header, 2.54 mm, 2 Rows, 10 Contacts, Surface Mount
LOTES	ACA-SPI-006-K01	SOP2-16 Socket Gold Surface Mount
Molex	0533980471	Pin Header, Vertical, Signal, 1.25 mm, 1 Rows, 4 Contacts, Surface Mount Straight
Texas Instruments	TPD2E2U06DCKR	TVS diode array, 15 kV, SC70, 5.5V, 1.5 pF
STMicroelectronics	ESDA25P35-1U1M	Unidirectional TVS, 30 kV, QFN-2L, 22 V, 195 pF
Onsemi	RB521S30T1G	Small Signal Schottky Diode, Single, 30 V, 200 mA, 500 mV, 1 A, 125 °C
Lite-On	LTST-C190GKT	LED, Green, SMD, 0603, 20 mA, 2.1 V, 569 nm
Diodes Incorporated	DMG1012T-7	Power MOSFET, N Channel, 20 V, 630 mA, 0.3 ohm, SOT-523, Surface Mount
ECS Inc. International	ECS-240-10-47-CKM-TR	Crystal, 24 MHz, SMD, 1.6mm x 1.2mm, 10 ppm, 10 pF, 10 ppm, ECX-1247 Series
Murata	GRM155R61A106ME11D	Multilayer Ceramic Capacitors MLCC - SMD/SMT 10 uF 10 VDC 20% 0402 X5R
Murata	GRM155R61H104KE14D	SMD Multilayer Ceramic Capacitor, 0.1 µF, 50 V, 0402 [1005 Metric], ± 10%, X5R, GRM Series
Samsung Electro-Mechanics	CL21A226MAYNNNE	SMT Multilayer Ceramic Capacitor, 22uF, +/-20%, 25V, X5R, 0805 [2012 Metric]
Murata	GRM188C81C106MA73D	SMD Multilayer Ceramic Capacitor, 10 µF, 16 V, 0603 [1608 Metric], ± 20%, X6S, GRM Series
Murata	GCM155L8EH104KE07D	SMD Multilayer Ceramic Capacitor, 100nF, 50V, 0402, ±10%, X8L
Samsung Electro-Mechanics	CL10A226MO7JZNC	SMD Multilayer Ceramic Capacitor
Murata	GRM188R60J226MEA0D	SMD Multilayer Ceramic Capacitor, 22 µF, 6.3 V, 0603 [1608 Metric], ± 20%, X5R, GRM Series
TDK	CGA2B2C0G1H120J050BA	SMD Multilayer Ceramic Capacitor, 12 pF, 50 V, 0402 [1005 Metric], ± 5%, C0G / NP0, CGA
Coilcraft	XEL4030-332MEC	Power Inductor (SMT), AEC-Q200, 3.3 µH, 6.6 A, Shielded, 5.9 A, XEL4030
ROHM Semiconductor	PMR03EZPJ000	SMD Chip Resistor
Panasonic	ERJ2GE0R00X	SMD Chip Resistor, Jumper, 0 ohm, 100 mW, 0402 [1005 Metric], Thick Film, General Purpose
Bourns	CR0402-FX-1003GLF	SMD Chip Resistor, 100 kohm, ± 1%, 62.5 mW, 0402 [1005 Metric], Thick Film, General Purpose
Bourns	CR0402-FX-1002GLF	SMD Chip Resistor, 10 kohm, ± 1%, 62.5 mW, 0402 [1005 Metric], Thick Film, General Purpose
Bourns	CR0402-FX-2201GLF	SMD Chip Resistor, 2.2 kohm, ± 1%, 62.5 mW, 0402 [1005 Metric], Thick Film, General Purpose
Bourns	CR0402-FX-1004GLF	SMD Chip Resistor, 1 Mohm, ± 1%, 62.5 mW, 0402 [1005 Metric], Thick Film, General Purpose
Bourns	CR0402-FX-4700GLF	SMD Chip Resistor, 470 ohm, ± 1%, 62.5 mW, 0402 [1005 Metric], Thick Film, General Purpose
Bourns	CR0402-FX-3162GLF	SMD Chip Resistor
Bourns	CR0402-FX-1603GLF	SMD Chip Resistor, Ceramic, 160 kohm, ± 1%, 62.5 mW, 0402 [1005 Metric], Thick Film
Bourns	CR0402-FX-5232GLF	SMD Chip Resistor, 52.3 kohm, ± 1%, 63 mW, 0402 [1005 Metric], Thick Film, General Purpose
Bourns	CR0402-FX-3163GLF	SMD Chip Resistor

Name	Type	Material	Thickness[mm]	Constant
F.Mask	Top Solder Mask		0.01
F.Cu	copper		0.035
dielectric 1	prepreg	PR2116	0.12	4.3
In1.Cu	copper		0.035
dielectric 2	core	FR4	0.2	4.39
In2.Cu	copper		0.035
dielectric 3 (1/2)	prepreg	PR2116	0.12	4.39
dielectric 3 (2/2)	prepreg	PR2116	0.12	4.39
In3.Cu	copper		0.035
dielectric 4	core	FR4	0.2	4.39
In4.Cu	copper		0.035
dielectric 5 (1/2)	prepreg	PR2116	0.12	4.39
dielectric 5 (2/2)	prepreg	PR2116	0.12	4.39
In5.Cu	copper		0.035
dielectric 6	core	FR4	0.2	4.39
In6.Cu	copper		0.035
dielectric 7	prepreg	PR2116	0.12	4.3
B.Cu	copper		0.035
B.Mask	Bottom Solder Mask		0.01

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This board exposes the interfaces offered by Data Center Secure Control Modules (DC-SCM), providing a convenient platform for software development, debugging and initial validation before deployment in a server. It is compatible with DC-SCM 2.x modules and breaks out interfaces such as LPTI, PCIe, USB, UART, SPI, QSPI and I2C to accessible connectors and pin headers, making bring-up and integration easier in lab environments.

DC-SCI Debug Interposer