TEC0850 MAX10 - SMB

Overview

TEC0850 design for MAX10 FPGA U18:  10M08SAU169C8G.

Feature Summary

• SC to HD-IO Bank Interface
• I²C Backplane interface
• I²C System Control interface
• Power control
• Power status
• FAN Control
• FAN Status
• Power status indication

Firmware Revision and supported PCB Revision

See Document Change History.

Product Specification

Port Description

Functional Description

Power

System Controller provides control and status information for main power rails. By default all power rails are ON, the user can manipulate power using I²C interface, see  Memory map table.

Reset

System controller generates a reset pulse to supervisor chip U69 when front panel button S3 is pressed.

JTAG

JTAG interface from FTDI controller passes through System Controller to FPGA.

I²C Interface

To use SC I²C interface corresponding connection should be configured in the FPGA project. There are 2 standard I²C interface controllers, which can be used AXI_IIC or Zynq UltraScale+ MPSoC integrated I²C controller.

AXI_IIC

Zynq UltraScale+ MPSoC integrated I²C controller

Project XDC file should contain

set_property PACKAGE_PIN G18 [get_ports {MAX_IO1}]
set_property PACKAGE_PIN G19 [get_ports {MAX_IO2}]
set_property PACKAGE_PIN K18 [get_ports {MAX_IO3}]
set_property PACKAGE_PIN H19 [get_ports {MAX_IO4}]
set_property IOSTANDARD LVCMOS33 [get_ports MAX_IO*]
set_property PULLUP true [get_ports {MAX_IO2}]
set_property PULLUP true [get_ports {MAX_IO4}]

With this configuration, I²C device with address 0x20 should be visible on I²C bus

This device is an emulation of TCA6416 I²C GPIO Chip. GPIO input and output pins are used to get status and control the system.

Memory map

LED Control

Power Indicator

I²C GPIO registers can be operated with  directly, using Linux i2cset and i2cget commands

root@petalinux:~# # Disable LED4
root@petalinux:~# i2cset -y 0 0x20 2 0xFC
root@petalinux:~# # Get Power status
root@petalinux:~# i2cget -y 0 0x20 0 b
0x3f
root@petalinux:~# # Get FAN RPM/1000
root@petalinux:~# i2cget -y 0 0x20 1 b
0x08

or I²C GPIO device driver can be instantiate in Linux device tree (project-spec/meta-user/recipes-bsp/device-tree/files/system-user.dtsi).

&i2c0 {
	tca6416: tca6416@21 {
		compatible = "ti,tca6416";
		reg = <0x20>;
		gpio-controller;
		#gpio-cells = <2>;
	};
};

LED

The System Controller control D4 LED (front panel green rightmost LED). By default, it act like power status indicator see "Power Indicator" table in "I²C interface" section.

Appx. A: Change History and Legal Notices

Revision Changes

RE02 to REV03

• Add I²C GPIO core
• FAN Control/FAN Status
• Power control

RE03 to REV04

• BUGFIX Reset

Document Change History

To get content of older revision got to "Change History"  of this page and select older document revision number.

Date	Document Revision	CPLD Firmware Revision	Supported PCB Revision	Authors	Description
2018-10-24	v.21	REV04	REV02	Oleksandr Kiyenko	REV04 finished Firmware release on 2018-10-24
2018-10-10	v.20	REV03	REV02	Oleksandr Kiyenko	REV03 finished Firmware release on 2018-10-10
2018-08-15	v.3	REV02	REV02	Antti Lukats	initial release
	All			Oleksandr Kiyenko , Antti Lukats , John Hartfiel

Appx. A: Legal Notices