Difference between revisions of "Minnowboard:MinnowMax"

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  |The Minnowboard Max uses a 5.5 x 2.1mm barrel 5V power plug, and if bundled will ship with a 2.5A power supply.  It is a Center Positive power supply, indicating that the center (tip) of the output plug is positive (+), the outer barrel is negative (-).
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  |The Minnowboard Max uses a 5.5 x 2.1mm barrel 5V power plug (+/- .25V or 4.75 - 5.25V), and if bundled will ship with a 2.5A power supply.  It is a Center Positive power supply, indicating that the center (tip) of the output plug is positive (+), the outer barrel is negative (-).
 
  | [[File:Centre-positive.svg|thumb|120px|Center Positive 5V connector]]
 
  | [[File:Centre-positive.svg|thumb|120px|Center Positive 5V connector]]
 
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  |}

Revision as of 13:52, 9 January 2015

Minnowboard.org.png
Category Feature
Core Logic
  • 64-bit Intel® Atom™ E38xx Series SoC
    • $99 MSRP: E3815 (single-core, 1.46 GHz)
    • $139 MSRP: E3825 (dual-core, 1.33 GHz)

CPU Information

Integrated Intel® HD Graphics With Open Source hardware-accelerated drivers for Linux OS
Memory
  • DDR3 RAM
    System Memory
    • $99 MSRP: 1 GB
    • $139 MSRP: 2 GB
8 MB SPI Flash
System Firmware Memory
Video Intel® HD Graphics

HDMI (micro HDMI connector)
1920x1080 max resolution
HDMI 1.4a

Audio Digital

via HDMI

Analog

To be available separately via MinnowBoard MAX Lure (sold separately)

I/O 1 – Micro SDSDIO
1 – SATA2 3Gb/sec
(Port multipliers not supported via on-board SATA)
1 – USB 3.0 (host)
1 – USB 2.0 (host)
1 – Serial debug

via FTDI cable (sold separately)

10/100/1000 Ethernet

RJ-45 connector

Experimenter
Features 		8 – Buffered GPIO pins 2 pins support PWM
I2C & SPI bus
2 - 16550 HS UARTS one with CTS/RTS
System Firmware Flash

Programming Header
Compatible with Dedi-Prog programmer

Board Dimensions 99 x 74mm (2.9 x 3.9in)
Temperature Range 0 – 70 deg C

Contact CirtcuitCo for industrial temp range needs

Power 5V DC

Sold separately in configurations appropriate to your region

Operating Systems

Setting up / Installing Linux

System Boot Firmware UEFI Firmware
Coreboot (in development)
Note: These features may be subject to change without notice. Hardware design files will be made available shortly after the board enters final production. Current estimate of public availability is June 2014.

MinnowBoard MAX

Resources



Firmware

Cases

Accessories (Lures)



Hardware Notes

Board Layout

MinnowBoard MAX Board Layout 1
MinnowBoard MAX Board Layout 2
MinnowBoard MAX Board Layout 3

Power Plug

The Minnowboard Max uses a 5.5 x 2.1mm barrel 5V power plug (+/- .25V or 4.75 - 5.25V), and if bundled will ship with a 2.5A power supply. It is a Center Positive power supply, indicating that the center (tip) of the output plug is positive (+), the outer barrel is negative (-).
Center Positive 5V connector

6-Wire Serial Console

The serial console port (UART0) uses a 3.3v FTDI serial cable with a 6-pin connector. This is a reasonably common cable, also used on the Arduino Pro, Arduino Pro Mini and Arduino Lilypad.

Pins and signal names are referenced from the cable

  • Pin 1: Ground (GND) (Closest to SATA connector)
  • Pin 2: CTS
  • Pin 3: VCC (3.3V)
  • Pin 4: TXD
  • Pin 5: RXD
  • Pin 6: RTS


NOTE: The serial pinout is flipped between A0 and A1. A0 boards are rare, and are only being documented for completeness.

Places that carry the appropriate Cable:



  • /dev/ttyS0
  • Baud rate: 115200
  • Hardware Flow Control: No
  • Bits: 8
  • Stop: 1
MinnowMax A1 Serial Pinout

4-Wire Serial Console

The serial console port (UART0) can be used with a 3.3v FTDI serial cable with a 4-pin connector. This is a reasonably common cable, also used on the Arduino Pro, Arduino Pro Mini and Arduino Lilypad. If you are using one of the 4-wire adapters, here are the connections:
  • Pin 1:BLACK - Ground (GND) (Closest to the SATA connector)
  • Pin 3:RED - VCC (Not connected)
  • Pin 4:GREEN - TXD
  • Pin 5:WHITE - RXD

The RED wire is power and is internally not connected on the MinnowMax.

Places that carry the appropriate Cable:



  • /dev/ttyS0
  • Baud rate: 115200
  • Hardware Flow Control: No
  • Bits: 8
  • Stop: 1
MinnowMax A1 Serial Pinout

High Speed UART1

Available on the Low Speed Expansion this Uart is 16550 compatible and appears as /dev/ttyS4

CTS/RTS signaling is available

High Speed UART2

Available on the Low Speed Expansion this Uart is 16550 compatible and appears as /dev/ttyS5

D1 (LED)

This is the power indicator, when lit power is being supplied to the board

D2 (LED)

This is the On/Off status indicator. When lit the system is running.

HDMI

The MinnowMax uses a Type D micro-HDMI connector. This is a standard port, for which cables and adapters can be readily picked up from most electronics stores

Ethernet

The MinnowMax uses a Realtek RTL8111GS-CG PCIe based chipset to provide 10/100/1000 ethernet connection. the results of some performance tests using iperf are available HERE.

Low Speed Expansion (Top)

The low speed connector uses 0.1" (2.54 mm) Male header pins in a 2 x 13 array, for a total of 26 pins. Pin 1 is the in the row closest to the power connector, and closest to the board edge.

NOTE: All I/O on the Low Speed Expansion is at 3.3V levels. THE PINS ARE NOT 5v TOLERANT

Layout
Description Name Pin Linux GPIO # (<= 3.17) Linux GPIO # (>= 3.18) Linux GPIO # (>= 3.18) Linux GPIO # (<= 3.17) Pin Name Description
Ground Gnd 1 2 Gnd Ground
+5V Power VCC 3 4 +3V3 + 3.3V Power
SPI Chip Select 1 GPIO_SPI_CS# 5 220 476 481 225 6 GPIO_UART1_TXD UART Transmit
Master In / Slave Out GPIO_SPI_MISO 7 221 477 480 224 8 GPIO_UART1_RXD UART Receive
Master Out / Slave In GPIO_SPI_MOSI 9 222 478 483 227 10 GPIO_UART1_CTS CTS / GPIO
SPI Clock GPIO_SPI_CLK 11 223 479 484 226 12 GPIO_UART1_RTS RTS / GPIO
Clock / GPIO GPIO_I2C_SCL (I2C #5) 13 243 499 472 216 14 GPIO_I2S_CLK Clock / GPIO
Data / GPIO GPIO_I2C_SDA (I2C #5) 15 242 498 473 217 16 GPIO_I2S_FRM Frame / GPIO
UART Transmit / GPIO GPIO_UART2_TXD 17 229 485 475 219 18 GPIO_I2S_DO Data Out / GPIO
UART Receive / GPIO GPIO_UART2_RXD 19 228 484 474 218 20 GPIO_I2S_DI Data In / GPIO
GPIO / Wakeup GPIO_S5_0 21 82 338 504 248 22 GPIO_PWM0 PWM / GPIO
GPIO / Wakeup GPIO_S5_1 23 83 339 505 249 24 GPIO_PWM1 PWM / GPIO
GPIO / Wakeup GPIO_S5_4 25 84 340 464 208 26 GPIO_IBL_8254 Timer / GPIO

NOTE: Pins 5-26 are shown above with their PRIMARY configuration, any pin may be switched to being a generic GPIO as well. This would give a total of 22 GPIOs, with two of those being PWM capable.

     Denotes Pins that have issues with firmware prior to 0.71 (8/13/2014 build)
     Denotes Pins that have been tested and work as expected. Remember to drive the pin to ground.

High Speed Expansion (Bottom)

The High speed connector uses a TE Connectivity compatible 60-pin header. The generally recommended header is the 3-5177986-2, or the 60POS .8MM FH 8H GOLD part that rises 7.85mm, allowing for 3/8" standoffs at the corners to be used to attach the lure to the minnowboard.

Link to connector used: http://www.digikey.com/product-detail/en/5177985-2/A99190CT-ND/1894007. mating connectors are listed at the bottom but include:

  • A99196DKR-ND - CONN PLUG 60POS .8MM FH 5H GOLD
  • A115336-ND - CONN PLUG 60POS DL BRD/BRD VERT
  • 5179030-2-ND - CONN PLUG 60POS FH .8MM BRD-BRD
  • 5177984-2-ND - CONN PLUG 60POS VERT FH .8MM
  • A99215CT-ND - CONN PLUG 60POS .8MM FH 8H GOLD   <-- Recommended connector
  • A99209CT-ND - CONN PLUG 60POS .8MM FH 7H GOLD
  • A99203CT-ND - CONN PLUG 60POS .8MM FH 6H GOLD
  • A99196CT-ND - CONN PLUG 60POS .8MM FH 5H GOLD
  • A99215TR-ND - CONN PLUG 60POS .8MM FH 8H GOLD
  • A99209TR-ND - CONN PLUG 60POS .8MM FH 7H GOLD
Layout
Description Pin Pin Description
Ground 1 2 Ground
mSATA_TX_P 3 4 mSATA_RX_P
mSATA_TX_N 5 6 mSATA_RX_N
+5V SB 7 8 +5V SB
mPCIE_REFCLK_P 9 10 USB_HOST_DP
mPCIE_REFCLK_N 11 12 USB_HOST_DN
Ground 13 14 Ground
mPCIE_TX_P 15 16 mPCIE_RX_P
mPCIE_TX_N 17 18 mPCIE_RX_N
+5V SB 19 20 +5V SB
EXP_I2C_SCL (I2C #6) 21 22 mPCIE_WAKEB
EXP_I2C_SDA (I2C #6) 23 24 mPCIe_CLKREQ3_B
Ground 25 26 Ground
EXP_GPIO1 27 28 EXP_GPIO3
EXP_GPIO2 29 30 EXP_GPIO4
+5V SB 31 32 +5V SB
EXP_GPIO6 (XDP_H_OBSDATA_A1) 33 34 EXP_GPIO5 (XDP_H_OBSDATA_A0)
EXP_GPIO7 (XDP_H_OBSDATA_A2) 35 36 EXP_GPIO8 (XDP_H_OBSDATA_A3)
Ground 37 38 Ground
XDP_H_PRDYB 39 40 XDP_H_PREQB_PB
PMC_RSMRST 41 42 FP_PWRBTN
+5V SB 43 44 +5V SB
PMC_CORE_PWROK 45 46 PMC_RSTBTN
PMC_PLTRST_R_V1P8 47 48 ILB_RTC_TESTB
Ground 49 50 Ground
51 52 XDP_H_TRSTB
53 54 XDP_H_TCK
+V1P8A 55 56 XDP_H_TMS
+V1P8A 57 58 XDP_H_TDI
Ground 59 60 Ground
GPIO Mapping
Name Pin Linux GPIO # Linux GPIO # Pin Name
EXP_I2C_SCL (I2C #6) 21 245
EXP_I2C_SDA (I2C #6) 23 244
[...]
EXP_GPIO1 27 109 111 28 EXP_GPIO3
EXP_GPIO2 29 110 112 30 EXP_GPIO4
[...]
EXP_GPIO6 33 105 106 34 EXP_GPIO5
EXP_GPIO7 35 107 108 36 EXP_GPIO8

NOTE: The I2C pins have the same property as the pins in the Low Speed Expansion Header, in that their primary purpose is I2C, but can be switched to GPIO in the firmware. In firmware this is the I2C #6

     Denotes Pins that have issues with firmware prior to 0.71 (8/13/2014 build)
     Denotes Pins that have been tested and work as expected. Remember to drive the pin to ground.

SPI Header to Firmware flashing J1

This is a pinned out port to allow for external flashing of the boot spi. Dediprog and Flyswatter devices have been tested and verified to work with this.

Layout
Description Pin Pin Description
DDP_1V8 1 2 Ground
DDP_SPI_CS 3 4 DDP_SPI_CLK
DDP_SPI_MISO 5 6 DDP_SPI_MOSI
7 8 DDP_IO3L

Power Connection J2 (SIP2_FAN)

This is a 5V 2-pin pin out originally intended to be used for a CPU fan. The single core (E3815) and the dual core (E3825) however use passive heat sinks, and thus do not, under normal circumstances, need a fan. It is theoretically possible to pull upwards of 1A through this port, however you should refer to the released schematics to verify that number before attempting to use this for anything. The pins have a 2.54mm pitch. These Screw Terminals 2.54mm Pitch are an example of a compatible component.

NOTE: This is not populated on the Single, or Dual core boards. This can be populated if needed, and will provide the above power

Layout
Description Pin Pin Description
Ground 1 2 +5VSB

Switch Jumper J5

This pin is intended to allow for power toggling via a remote switch or relay. It is fundamentally no different than pressing SW1, and behaves identically.

NOTE: This is not populated, by default.

Layout
Description Pin Pin Description
+5VSB 1 2 Ground

SATA LED J6

J6 header is allows for an external LED to be connected to the SATA interface's activity signal. when a LED is connected to this header it will blink based on the amount of SATA read/write activity.

NOTE: This is not populated, by default.

Layout
Description Pin Pin Description
1 2 +V1P8S

SD Card Write Protect J7

This is a jumper point, mostly available for debugging, that enables the sd card write protect explictily. This is not populated on production boards.

GPIO for 1GB vs 2GB

This is mostly for firmware development, but there is a specific GPIO set, at manufacture time, that determines 1GB or 2GB(or more) memory sizes. 

   GPIO_S5_5 is the GPIO that will determine the memory configuration.
   
   0 - 1GB configuration
   1 - 2/4GB configuration
   
   the 2GB and 4GB configurations are the same since the 4GB configuration
   is a double die of the 2GB.  You only need to initialize enough memory
   in order for Linux to boot and program the I2C EEPROM.

How a firmware should initialize the board for memory given the above:

  1. Read the SPD, if it's valid use that and DO NOT do anything with the GPIO_S5_5 pin
  2. IF the SPD is invalid/empty, read GPIO_S5_5
    • If GPIO_S5_5 is 0 - use the hard coded 1GB configuration
    • If GPIO_S5_5 is 1 - use a hard coded 2GB configuration (even if the board has 4GB of memory)

Design Files

NOTE: All design files are released under Creative Commons CC-BY-SA (http://creativecommons.org/)

The MinnowBoard Max is intended to comply with all requirements and guidelines set forth by the Open Source Hardware Association (http://www.oshwa.org/)




Known Issues

MinnowBoard-MAX Open Bugs (Bugzilla)

Firmware

See the bug list, linked above.

NVRam issue

There are some reports of corruption of the UEFI firmware

Symptoms are no display, 2 leds on, and this serial output trace : 

>>>>SecStartup
>>>>MemoryInit Done
>>>>BdsEntry


Hints :


Resources :

This should be resolved in firmware's after 8/13/2014

Monitors

There is an issue with regards to some monitors not being able to display from the MinnowBoard MAX. Most monitors seem to be fine, but some will either completely not show a display (even at firmware boot-up) or may only show a display after the operating system is booting.

This turns out to be an issue with regards to HDMI vs. DVI detection and initialization. A work around is being added into the firmware to resolve this.

This is fixed in firmware's after 8/13/2014

There have been some additional reports that some monitors may still not be working in the FIRMWARE, but are working once the OS (Linux) comes up. If you have a monitor that is having a problem please file a bug on our Bugzilla and be sure to include the make, model, native resolution and the exact cabling used to connect the monitor to the MinnowBoard MAX

All Hardware revisions

RTC
  • The RTC may not function correctly (when a battery is added) because resistor R278 (back side of the board) may be missing. Adding a 1K or 2K resistorshould resolve this.
USB

There is a potential issue when using a powered USB Hub. If the hub, erroneously, provides power over the USB 3 or USB 2 input connector, the MinnowBoard MAX will use that as power. This is in violation of the USB spec, and will be rectified in a later revision of the MinnowBoard MAX.

Hubs known to cause this:

It is suggested that you check powered USB hubs to confirm that they do not provide power back to the board, as described, and if a hub is found to do this, please report it here. A hub found to be doing this should be used without being externally powered if used at all.

NOTE: This is not an indication that hubs do not work, or that USB does not work. This is merely an indication that some powered hubs violate the USB spec, and there is a flaw (a diode that should be added) in the MAX design. USB Hubs work fine.

  • Another issue might appear if a wireless USB dongle operating at 2.4 GHz (e.g., a wireless receiver for input devices) is connected to the USB2.0 port together with an USB3.0 device attached to the USB3.0 host connector. In this case the device connected to the USB dongle can become unresponsive. A solution is to connect the dongle to the USB2.0 port using an extension cable or a USB hub.

NOTE: This problem is caused by radio frequency interference from the USB3.0 connection. This seems to be a general USB3.0 issue. Information on this can be found at Intel.com

A0

A1

A2

A3

A4

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