Dasharo compatible with MSI PRO Z690-A and PRO Z790-P - development

Intro

This document gather various notes and documentation useful for development of Dasharo compatible with the MSI PRO Z690-A and PRO Z790-P platform.

Hardware connection

Requirements

• peripherals listed in the:
  • PRO Z690-A Hardware Configuration Matrix
  • PRO Z790-P Hardware Configuration Matrix
• RTE
• Sonoff S20 Smart Plug with custom firmware

Serial debug

• Attach the jumpers in J16 header to enable header J18 according to the table below:

Jumper position (TX)	Jumper position (RX)
EXT + COM	EXT + COM

• Connect signals from the J18 header to serial receiver:

RTE	Msi Z690
J18 pin 1 (GND)	JBD1 pin 1 (pin closer to JBAT1)
J18 pin 2 (RX)	JBD1 pin 2 (pin further from JBAT1)

Pins on JBD1 are not described in the documentation. They have been discovered experimentally. Pay attention to the connections.

Please also note that this is uni-directional communication. We can gether logs from booting, but we cannot provide input to the platform at the same time.

SPI

• For external flashing, connect RTE with motherboard according to the table below:

RTE SPI header	MSI Z690-A/Z790-P
J7 pin 1 (Vcc)	JTPM1 pin 1 (SPI Power)
J7 pin 2 (GND)	JTPM1 pin 7 (GND)
J7 pin 3 (CS)	JTPM1 pin 5 (RESERVED / BIOS SPI CS pin)
J7 pin 4 (SCLK)	JTPM1 pin 6 (SPI Clock)
J7 pin 5 (MISO)	JTPM1 pin 3 (MISO)
J7 pin 6 (MOSI)	JTPM1 pin 4 (MOSI)

JTPM1 is a 2mm pitch header, you will need 2mm to 2.54mm female-female dupont wires to connect to RTE.

The JTPM1 pin5 is actually BIOS SPI CS pin (marked as reserved in the board manual).

• Example connection:

Power control

Power buttons control

• Connect 12V/4A power supply to RTE J13 connector to power on RTE

• Connect power control pins from mainboard to RTE according to the table below:

JFP1 is located in the corner of the mainbaord, near SATA interface ports

RTE	MSI Z690-A/Z790-P
J11 pin 9	JFP1 pin 6 (PWR_ON)
J11 pin 8	JFP1 pin 7 (RST)
J15 pin 1 (GND)	JFP1 pin 5 (GND)

Power supply control

Connect SeaSonic FOCUS Plus Platinum power supply unit to the mains via Sonoff S20 Smart Plug. To power control via RTE, Sonoff smart plug