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User’s Manual

 

70 

                        

                        Bit =1, means output high level 

Bit =0, means output low level   

description

The output value is valid only when the pin is in output mode 

 

  4    * creation date

 

  5                                                                                                                                                      *   

==================================================================== */ 

  void I715_2nd_gpio_output(int port,int level); 

 

/*======================================================================   

1      * int I715_2nd_gpio_input(int port); 

2      * function description

read the motherboard GPIO input level 

3      * parameter description

 

 

Return value

return a byte (8 bit), each bit of the 8 bit corresponding to the level state of a GPIO 

pin 

             Value=1, means high level 

             Value=0, means low level 

 

 

level 

Bit7 

Bit6 

Bit5 

Bit4 

Bit3 

Bit2 

Bit1 

Bit0 

GPIO pin 

PIN8 

PIN7 

PIN6  PIN5 

PIN4 

PIN3 

PIN2 

PIN1 

Summary of Contents for KMDA-2602

Page 1: ...User s Manual 1 User s Manual KMDA 2602 Ver A1 0 Date 1 October 2018 ...

Page 2: ...User s Manual 2 Version Note No Ver Note Date Writer 1 A1 0 first publish 20180801 Tracy Liu ...

Page 3: ...ntended to be accurate and reliable However Shenzhen JHC Technology Co Ltd assumes no responsibility for its use nor for any infringements of the rights of third parties which may result from its use Acknowledgements Award is a trademark of Award Software International Inc IBM PC AT PS 2 and VGA are trademarks of International Business Machines Corporation Intel and Pentium are trademarks of Intel...

Page 4: ...ent materials service time and freight Please consult your dealer for more details If you think you have a defective product follow these steps 1 Collect all the information about the problem encountered For example CPU speed JHC products used other hardware and software used etc Note anything abnormal and list any onscreen messages you get when the problem occurs 2 Call your dealer and describe t...

Page 5: ...nce when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct ...

Page 6: ...I 5V 12V Power supply Select 13 2 4 I O BUTTON AND LED INDICATION 14 2 4 1 Ethernet Connector LAN 15 2 4 2 Power Input Connector DC IN 15 2 4 3 USB Connector 16 2 4 4 HDMI 17 2 4 5 VGA Connector 18 2 4 6 COM1 2 Connector 18 2 4 7 COM3 4 Connector 19 2 4 8 COM5 6 Connector 20 2 4 9 DIO Connector 20 2 4 10 SATA2 0 Port connector 21 2 4 11 SATA Power Connector 22 2 4 12 Line Out Connector 22 2 4 13 I...

Page 7: ... UPDATING THE BIOS 56 DRIVER INSTALLATION 58 4 1 ABOUT THE SOFTWARE DVD ROM CD ROM 59 4 2 AUTO INSTALLING UNDER WINDOWS 8 10 59 4 3 MANUAL INSTALLATION 62 4 4 CPU TEMP LED DRIVER 63 4 5 UTILITY SOFTWARE REFERENCE 63 SYSTEM RESOURCE 64 5 1 WDT AND GPIO 65 5 1 1 WDT 65 5 1 2 GPIO 66 ...

Page 8: ...User s Manual 1 General Information CHAPTER 1 ...

Page 9: ...ating temperature showing in LEDs economic and reliable it will be fit for Iot terminal and manufacture application 1 2 Features Key features 1 Compact Aluminum chassis Fanless design 2 Intel Baytrail Celeron J1900 2 0 2 42G CPU 3 1 DDR3L 1333MHz SODIMM Up to 8GB 4 4 Intel I211 AT PCIe Gig LAN 5 1 Mini PCIe with PCIex1 USB signal Full size 1 Mini PCIe with SATA USB signal Full size 6 1 HDMI and 1 ...

Page 10: ...ared system memory Resolution HDMI up to 1920x1080 60Hz VGA up to 1920x1200 60Hz 1 3 3 Ethernet Chipset 4 Intel I211AT PCI Express Gigabit Ethernet controller Speed 10 100 1000 Mbps Integrated Interface 4 RJ45 1 3 4 Audio Chipset Realtek ALC662VD Interface 1 Line out 3 5mm phone jack 1 3 5 Power Consumption Input Voltage DC 9 36V Input Power Consumption TDP 12V 1 2A 2 5 HDD Power Adapter AC to DC ...

Page 11: ...5 F Vibration loading during operation With SSD 5 Grms random 5 500 Hz With HDD 1 Grms random 5 500 Hz Shock during operation With SSD 50g peak acceleration 11 ms duration With HDD 20g peak acceleration 11 ms duration EMC CE FCC Class A 1 5 Mechanical Specifications Main board front Figure 1 0 ...

Page 12: ...User s Manual 5 Main board rear Figure 1 1 Sub board ECB 150 Figure 1 2 ...

Page 13: ...User s Manual 6 KMDA 2602 Dimensions Unit mm Figure 1 3 ...

Page 14: ...User s Manual 7 Hardware Installation CHAPTER 2 ...

Page 15: ... KMDA 2602 Fanless Embedded Box Computer consists of an JHC SBC Single Board Computer board and an JHC subboard that is housed in an aluminum plate chassis Warning Do not remove any mechanical parts until you have verified that no power is flowing within the Embedded Box Computer Power must be switched off and the power cord must be unplugged JHC SBC board Internal Diagram Figure 2 1 ...

Page 16: ...consists of two metal pins and a small metal clip often protected by a plastic cover that slides over the pins to connect them To close a jumper you connect the pins with the clip To open a jumper you remove the clip Sometimes a jumper will have three pins labeled 1 2 and 3 In this case you would connect either pins 1 and 2 or pins 2 and 3 Figure 2 3 The jumper settings are schematically depicted ...

Page 17: ...jumpers inside the chassis that allows you to configure your system to suit your application The table below lists the functions of the various jumpers The table below shows the function of each of the board s jumpers Figure 2 5 Jumpers Jumper Name Description CMOS Clear CMOS Data Setting 3 Pin Block J_PANEL1 LVDS screen 3 3V 5V 12V Power supply Select 6 Pin Block JP1 JP3 COM5 COM6 RS232 RS485 RS4...

Page 18: ...can reconfigure the system with the default values stored in the ROM BIOS To load the default values stored in the ROM BIOS please follow the steps below 1 Power off the system and unplug the power cord 2 Set CMOS pins 2 and 3 to On Wait for a few seconds and set CMOS back to its default setting pins 1 and 2 On 3 Now plug the power cord and power on the system ...

Page 19: ... 12 2 3 2 LVDS Power supply 12V 5V 3 3V Mode Select Figure 2 7 J_PANEL is used to select the power supplied of LVDS panel 2 3 3 COM5 COM6 RS232 RS485 RS422 Mode Select Figure 2 8 NOTE JP1 is for COM5 JP3 is for COM6 ...

Page 20: ...13 2 3 4 COM5 COM6 Matching resistor Select Jumper Figure 2 9 NOTE JP2 is for COM5 JP4 is for COM6 2 3 5 COM5 COM6 RI 5V 12V Power supply Select Figure 2 10 NOTE Pin 12 and 34 are for COM5 Pin 56 and 78 are for COM6 ...

Page 21: ...User s Manual 14 2 4 I O Button and LED indication Front view Rear view Figure 2 11 ...

Page 22: ...or Table 2 1 RJ 45 Connector pin assignments Pin 10 100 1000BaseT Signal Name 1 TX 10 100 LAN_DA GHz 2 TX 10 100 LAN_DA GHz 3 RX 10 100 LAN_DB GHz 4 LAN_DC GHz 5 LAN_DC GHz 6 RX 10 100 LAN_DB GHz 7 LAN_DD GHz 8 LAN_DD GHz 2 4 2 Power Input Connector DC IN The KMDA 2602 uses a power socket that supports up to 60W of power and is a low power solution Use a 12V adapter to input voltage and a DC power...

Page 23: ...ev 2 0 compliance The USB interface can be disabled in the system BIOS setup The USB interface connector is used for connecting any device that con forms to the USB interface Many recent digital devices conform to this standard The USB interface supports Plug and Play which enables you to connect or disconnect a device whenever you want without turning off the computer Figure 2 14 USB2 0 connector...

Page 24: ...MDA 2602 provides a high resolution HDMI display port it supports the most resolution up to 1920 1080 60Hz Figure 2 16 HDMI Connector Table 2 4 HDMI Pin Assignments Pin Type Signal Name Pin Type Signal Name Pin Type Signal Name 1 DATA2_P 8 GND 15 SCL 2 GND 9 DATA0_N 16 SDA 3 DATA2_N 10 CLK_P 17 GND 4 DATA1_P 11 GND 18 VCC 5 GND 12 CLK_N 19 DETECT 6 DATA1_N 13 NC 20 7 DATA0_P 14 NC ...

Page 25: ...GA interface via D sub 15 pin connector to support a VGA CRT monitor it supports the most resolution up to 1920 1080 60Hz 2 4 6 COM1 2 Connector The KMDA 2602 provides 2 serial ports of COM1 2 by 2 D sub 9 pin connectors COM1 2 can be configured as RS232 RS422 or RS485 by BIOS setup 1 2 3 4 5 6 7 8 9 Figure 2 18 COM1 2 Connector Table 2 6 COM1 2 Serial Port Pin Assignments Pin Type RS 232 Signal R...

Page 26: ...e NC represents No Connection 2 4 7 COM3 4 Connector Figure 2 19 COM3 4 Connector COM3 4 are only for RS232 The Pin assignments are as follows Table 2 7 COM3 4 Serial Port Pin Assignments Pin Type Signal Name Pin Type Signal Name 1 DCD 2 RxD 3 TxD 4 DTR 5 GND 6 DSR 7 RTS 8 CTS 9 RI ...

Page 27: ...you to select the power supply RI 5V 12V Refer to 2 3 3 2 3 4 2 3 5 chapters for more information Table 2 8 COM5 6 Serial Port Pin Assignments Pin Type RS 232 Signal RS 422 Signal RS 485 Signal 1 DCD TX DATA 2 RxD TX DATA 3 TxD RX NC 4 DTR RX NC 5 GND GND GND 6 DSR NC NC 7 RTS NC NC 8 CTS NC NC 9 RI 5V 12V NC NC 2 4 9 DIO Connector The KMDA 2602 provides a 8 bit DIO by a D sub 9 pin connector I O ...

Page 28: ...IO1 7 DIO5 3 DIO2 8 DIO6 4 DIO3 9 DIO7 5 GND 2 4 10 SATA2 0 Port connector There is Serial ATA 2 0 port with data transfer rate up to 3Gb s The Serial ATA connector is used to connect Serial ATA devices Figure 2 22 Table 2 10 SATA Port Pin Assignments Pin Type Signal Name Pin Type Signal Name 1 GND 5 RX 2 TX 6 RX 3 TX 7 GND 4 GND ...

Page 29: ...nector is inserted into corresponding Pin 1 of PWOUT to avoid possible damage to the board and hard disk driver 2 4 12 Line Out Connector Figure 2 24 Table 2 12 Line Out Pin Assignments Pin Type Signal Pin Type Signal Pin Type Signal H1 NC 3 LINE2_JD 6 LOUT_R H2 NC 4 GND_AUD 7 GND_AUD 2 NC 5 LOUT_L 2 4 13 I port Connector There are optional 1 USB2 0 or Mini PCIe module I O ports such as CAN Bus Gi...

Page 30: ...n LED 1 HDD Run LED 3 CPU temperature class LEDS on the front CPU temperature class LED Green 85 Yellow 86 and 95 Red 96 Users can monitor the working state of the CPU according to the display of the LED 2 5 Installation 2 5 1 HDD SSD Installation Step 1 Unscrew 6 screws on the left right side Step 2 Unscrew 6 serial copper columns on the front panel Step 3 Unscrew the spring pad and nut of the DC...

Page 31: ...hassis screw 2 screws on the left right side Step 10 install the front panel Step 11 screw 4 screws on the left right side Step 12 screw 6 serial copper columns on the front rear lock the nut and spring pad of the DC IN on the front panel Figure 2 26 Figure 2 27 ...

Page 32: ...User s Manual 25 Figure 2 28 Figure 2 29 Figure 2 30 ...

Page 33: ...User s Manual 26 Figure 2 31 Figure 2 32 Figure 2 33 ...

Page 34: ...User s Manual 27 Figure 2 34 Figure 2 35 Figure 2 36 ...

Page 35: ...de Unscrew 6 serial copper columns on the front rear Unscrew the spring pad and nut of the DC IN on the front rear Remove the front panel Rotate the bottom assembly 180 separate the SATA cable which connected the SATA drive and the SATA power data connector of mother board Figure 2 37 Figure 2 38 ...

Page 36: ...User s Manual 29 Figure 2 39 Figure 2 40 Figure 2 41 ...

Page 37: ...2 Unscrew 1 screw and 10 serial copper columns on the rear panel Unscrew 2 screws on the left right side Remove the rear panel Unscrew 4 screws on the subcard Separate the motherboard and the subcard Figure 2 42 Figure 2 43 ...

Page 38: ...ual 31 Figure 2 44 Figure 2 45 Step 3 Hold the Mini PCIe module with its notch aligned with the Mini PCIe socket of the board and insert it at a 30 degree angle into the socket as shown in the picture Figure 2 46 ...

Page 39: ... Screw 1 screw and 10 serial copper columns on the rear panel Connect the SATA cable which connected the SATA drive and the SATA power data connector of mother board Close the bottom cover back to the chassis screw 2 screws on the left right side Install the front panel Screw 4 screws on the left right side Screw 6 serial copper columns on the front rear lock the nut and spring pad of the DC IN on...

Page 40: ...User s Manual 33 Figure 2 49 Figure 2 50 Figure 2 51 ...

Page 41: ...User s Manual 34 Figure 2 52 Figure 2 53 Figure 2 54 ...

Page 42: ... 1 Step 2 The step here is the same as above chapter 2 5 2 Installing Mini PCIe Module Step 2 For details please refer to the above chapter 2 5 2 Installing Mini PCIe Module Step 2 Step 3 Hold the MSATA module with its notch aligned with the MSATA socket of the board and insert it at a 30 degrees angle into the socket as shown in the picture Figure 2 55 Step 4 Screw one screw to the holder as show...

Page 43: ...er s Manual 36 Figure 2 56 Step 5 The step here is the same as above chapter 2 5 2 Installing Mini PCIe Module Step 5 For details please refer to the above chapter 2 5 2 Installing Mini PCIe Module Step 5 ...

Page 44: ...User s Manual 37 BIOS Setup CHAPTER 3 ...

Page 45: ...ally transfer to the SETUP setting screen after detecting the IDE and other devices 1 Turn on the system or restart the system The self test message will appear on the display screen 2 When the Press Del to enter setup prompt appears in the middle of the screen press the Del key to enter the BIOS setup program 3 Use the arrow keys to move to the option you want to modify and press Enter to enter t...

Page 46: ...stem information Select an item and press Enter to display the submenu Figure 3 1 BIOS Vendor American Megatrends This item shows the information of the BIOS vendor BIOS ID JH715A14 This item shows the information of the BIOS version OS Selection Windows 7 This item shows the OS Selection Build Date and Time 02 05 2018 19 26 45 This item shows the information of the BIOS build date and time System...

Page 47: ...up more advanced information about your system Handle this page with caution Any changes can affect the operation of your computer Figure 3 2 ACPI Settings The item in the menu shows the highest ACPI sleep state when the system enters suspend Figure 3 3 ...

Page 48: ...the Advanced Menu page IT8786 Supper IO Configuration The item in the menu shows the information of RTC wake settings Figure 3 4 Serial Port 1 Configuration Serial Port 1 Settings Serial Port 2 Configuration Serial 2 Settings Serial Port 3 Configuration Serial Port 3 Settings Serial Port 4Configuration Serial Port 4 Settings 8 bit TTL GPIO input and output settings Serial Port 1 Configuration ...

Page 49: ...d on or off The setting value is Enabled Disabled Device Setting Read Only This item displays the interrupt and address of the serial port Change Setting Set port interrupt and address of the serial port Serial MODE Set the mode of the serial port Subcard IO used with the subcard ECB 154 Figure 3 6 ...

Page 50: ...3 7 Serial Port 5 10Configuration Serial Port 5 10 Configuration is the same as above H W Monitor PC Health Status This item is used for hardware security detection The BIOS will display the current CPU and system temperature ...

Page 51: ... Settings Figure 3 9 Wake system from S5 This item is used to set whether to power on regularly The setting value is Enabled Disabled If you select Enabled set the hour minute and second in the pop up options Serial Port Console Redirection ...

Page 52: ...Manual 45 Figure 3 10 Console Redirection Use this item to Serial Port Console Redirection Press Esc to return to the Advanced Menu page CPU Configuration This item in the menu shows the information of the CPU ...

Page 53: ...ute Disabled Bit The Execution Disable bit is a hardware feature of the Intel CPU that enables the CPU to avoid certain malicious attacks based on buffer overflow viruses In addition the execution of the prohibition bit requires Windows XP SP2 Windows Server 2003 SP1 and other OS to work properly The implementation principle is that the processor divides several areas in memory some areas can exec...

Page 54: ...power status report the setting values are Disabled Enabled When set to Enabled the option Max CPU C state appears and the Max CPU C state value can be set SATA Configuration This item in the menu shows the mode of serial ATA configuration options Figure 3 13 Serial ATA SATA ...

Page 55: ... set as the optical drive port SATA Mode This item is used to set the operating mode of the SATA Serial ATA Port 0 This item shows whether to shut down Serial ATA Port 0 SATA Port 0 Hotplug This item shows whether supports SATA Port 0 Hotplug Serial ATA Port 1 This item shows whether to shut down Serial ATA Port 1 SATA Port 1 Hotplug This item shows whether supports SATA Port 1 Hotplug CSM Configu...

Page 56: ...is item indicates the boot priority of controlling EFI or Legacy OpROM Network This item is used to set the EFI network card OpROM boot or the traditional network card OpROM boot or priority boot Storage This item is used to set the EFI storage OpROM boot or the traditional storage OpROM boot Video This item is used to set EFI display OpROM startup or traditional display OpROM startup Other PCI de...

Page 57: ...o Disable It will operate in USB 1 1 compatibility mode before giving ownership to the OS USB Mass Storage Driver Support USB mass storage device support switch USB Transfer time out This item Sets the timeout period for control batch and interrupt transmission The default is 20 seconds Device reset time out This item sets boot command timeout of the large capacity USB disk The default is 20 secon...

Page 58: ...User s Manual 51 Figure 3 16 North Bridge Scroll to this item and press Enter and view the following screen ...

Page 59: ...isplay This item shows the main output display device when the system starts up DVMT pre AIIocated This item sets the memory size pre assigned to the motherboard integrated graphics in DVMT mode DVMT Total Gfx Mem This item shows how much dynamic memory is allocated to the integrated graphic in total LCD Control Figure 3 18 ...

Page 60: ...screen Press Esc to return to the Chipset Menu page South Bridge Scroll to this item and press Enter and view the following screen Figure 3 19 Restore AC Power Loss This item sets the power on status after power on If Power Off is selected you need to press the power button to power on after power on If Power On is selected it will be powered on directly after power on If Last State is selected af...

Page 61: ...em determines if the NumLock key is active or inactive at system start up time The default value is On which is a digital lock on when the system starts Set to Off the keypad is in cursor control state at startup Show Full Logo This item shows the vendor logo on the startup screen Enabled Display static LOGO screen at startup Disabled Display self test information at start Boot Option 1 2 These it...

Page 62: ...as the boot device If there are multiple hard disks you should select the priority of these hard disks in the item The highest priority hard disk will be displayed in Boot Option 1 3 5 Security Menu Scroll to this item and press Enter and view the following screen Figure 3 22 ...

Page 63: ...y changes that you have made and exit Restore Defaults This item enables you to restore the system defaults 3 7 Updating the BIOS The BIOS Basic Input and Output System Setup Utility displays the system s configuration status and provides you with options to set system parameters The parameters are stored in battery backed up CMOS RAM that saves this information when the power is turned off When t...

Page 64: ... fpt64 efi program to write the BIOS data you used to upgrade for example XXXX ROM to the FLASH IC The specific operation instructions are Fpt64 efi f xxxxxxxx bin If you need to add other parameters after the instruction please add space after the above instruction NOTE 1 Only upgrade the BIOS if you encounter problems and need to 2 To upgrade the BIOS please use the BIOS read write program attac...

Page 65: ...User s Manual 58 Driver Installation CHAPTER 4 ...

Page 66: ...mation that is not included in this manual Never try to install all software from folder that is not specified for use with your motherboard 4 2 Auto installing under Windows 8 10 The Auto install DVD ROM CD ROM makes it easy for you to install the drivers and software for your motherboard If the Auto install DVD ROM CD ROM does not work on your system you can still install drivers through the fil...

Page 67: ...different operating systems such as Windows 7 8 10 Always go to the correct folder for the kind of OS you are using In install the software execute a file named SETUP EXE by double clicking the file and then following the instructions on the screen The Exit button closes the Auto Setup window Utilities Tab Lists the software utilities that are available on the disk Information Tab Displays the pat...

Page 68: ...lation screen appears Figure 4 2 5 Follow the instructions on the screen to install the items Drivers and software are automatically installed in sequence Follow the onscreen instructions confirm commands and allow the computer to restart a few times to complete the installation Windows 8 10 will show the following screen after system restart you must select Desktop in the ...

Page 69: ...w UAC User Account Control message after the system restart You must select Allow to install the next driver Continue this process to complete the drivers installation Figure 4 4 4 3 Manual Installation Insert the disk in the DVD ROM CD ROM drive and locate the PATH DOC file in the root directory ...

Page 70: ...EMP LED driver The KMDA 2602 provides temperature showing in LEDs economic and reliable Users can monitor the working state of the CPU according to the display of the LED Please perform the following operations making LEDs work normally Find the CPU temperature test tool folder and open it as shown below Run the exe application NOTE Please add the exe application to the startup item to ensure that...

Page 71: ...User s Manual 64 SYSTEM RESOURCE CHAPTER 5 ...

Page 72: ...function must be called before calling other functions 3 parameter description 4 creation date 5 void jhctech_init 1 void jhctech_init 2 function description library release Pair with jhctech_init release the library s occupied resources when not needed 3 parameter description 4 creation date 5 void jhctech_deinit ...

Page 73: ...ponding to the level state of a GPIO pin parameter Port Fill in the motherboard GPIO port which is a fixed value designed by the manufacturer 4 creation date 5 BYTE I715_MB_gpio_input WORD port 1 void I715_MB_gpio_output WORD port BYTE value 2 function description high and low level output of the motherboard Return value Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 GPIO pin PIN8 PIN7 PIN6 PIN5 PIN4 PIN...

Page 74: ... output value Bit 1 means output high level Bit 0 means output low level 4 creation date 5 void I715_MB_gpio_output WORD port BYTE value 1 void I715_MB_gpio_init 2 function description Motherboard gpio initialization function need to be called once before use 3 parameter description 4 creation date value Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 GPIO pin PIN8 PIN7 PIN6 PIN5 PIN4 PIN3 PIN2 PIN1 ...

Page 75: ... description WDT function 3 parameter Time sets the dog feed time the time value is 0 255 Setting 0 means to turn off the watchdog 4 creation date 5 void I715_watchdog_set int time 1 void I715_2nd_gpio_mode int port int mode 2 function description subcard input and output mode settings 3 parameter description ...

Page 76: ...y when the pin is in output mode 4 creation date 5 void I715_2nd_gpio_mode int port int mode 1 void I715_2nd_gpio_output int port int level 2 function description subcard output high and low level 3 parameter descirption parameter port fill in GPIO number of the subcard 1 or 2 level 8 bits of a byte each bit controls a GPIO pin output value mode Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 GPIO pin PIN...

Page 77: ...utput int port int level 1 int I715_2nd_gpio_input int port 2 function description read the motherboard GPIO input level 3 parameter description Return value return a byte 8 bit each bit of the 8 bit corresponding to the level state of a GPIO pin Value 1 means high level Value 0 means low level level Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 GPIO pin PIN8 PIN7 PIN6 PIN5 PIN4 PIN3 PIN2 PIN1 ...

Page 78: ...ard GPIO number 1 or 2 descripiton The read value is valid only when the pin is in input mode 4 creation date 5 int I715_2nd_gpio_input int port Return value Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 GPIO pin PIN8 PIN7 PIN6 PIN5 PIN4 PIN3 PIN2 PIN1 ...

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