TX28 Computer On Module • • • • Processor RAM ROM RTC Freescale i.MX287, 454 MHz 128MB DDR2-400 SDRAM 128MB NAND Flash DS1339 Real Time Clock • • • Power supply Size Temp.-Range Single 3.1V to 5.5V 26mm SO-DIMM -40°C..85°C Key Features • Two 10/100Mbps Ethernet ports with IEEE1588 support • Two High-Speed USB 2.0 ports • True colour LCD controller • Two CAN interfaces • 4/5 wire Touchscreen interface • Several peripheral interfaces: UART, SD-CARD, I2C, PWM, Serial Audio, SPI • Power management optimized for long battery life • 3.3V I/O OS Support • Windows Embedded CE • Linux Development System • Starter-Kit V z H M 4 45 9 M AR Ka-Ro electronics GmbH - Pascalstr. 22, D-52076 Aachen, Germany - Tel.: +49 2408 1402-0 (FAX -10) www.karo-electronics.de TX28 Board highlights: • • • • Standard TX-DIMM pinout: Lowest cost 454MHz ARM9 Industrial temperature range Standard TX-DIMM pinout as small as possible - only 26mm • • • • • 4-wire UARTs (x3) LCD I2C / PWM Serial Audio Interfaces (x2) 4-wire SD-Card/SDIO The TX28 is a member of a module series, specially designed for Freescales i.MX multimedia processors. TX modules are complete computers, High-Speed communication interfaces incl. onboard Ethernet PHY / on-chip implemented on a board smaller than a credit card, and ready to be designed USB PHY allows direct use of connectors/magnetics on the baseboard without into your embedded system. TX modules includes a Freescale® i.MX the need for additional logic: processor, SDRAM and Flash memory. The integrated LCD-controller enables direct connection of an LCD screen. The TX28 is specifically targeted at • 10/100 Mbps Ethernet embedded applications where size, high cpu-performance and cost are critical • 480 Mbps USB OTG factors. • 480 Mbps USB Host Computer on module • • • • • Freescale® i.MX28, 454 MHz 128 MByte DDR2-400 SDRAM (16bit) 128 MByte NAND Flash memory DIMM200-module (67,6mm x 26 mm x 3,6mm) Operating temperature range -40..85°C Additional interfaces like CAN, 4/5-wire resistive touch-screen, 2 UARTs and external memory interface are available on TX28 specific pins. Some interfaces are multiplexed with other functions. Power Supply The TX28 accepts an input voltage from various sources: • 1-cell Li-Ion/Polymer (3.1V to 4.2V) i.MX28 for Industrial Applications • 5.0V USB supply or AC wall adapter The i.MX28 family of multimedia applications processors is the latest extension • 3.3V of Freescales ARM9 product portfolio. The i.MX28 family integrates display, power management, and connectivity features unmatched in ARM9-based Read more in our TX-Guide: devices, reducing system cost and complexity for cost sensitive applications. And easy-to-use tools and software help you design differentiated industrial www.karo-electronics.com/TX-Guide and consumer products in less time. With optimized performance and power consumption, the i.MX28 is an ideal fit for fanless systems or for portable equipment that need to be battery operated. Numerous connectivity options including dual 10/100 Ethernet (IEEE® 1588 capable) with L2 switch address specific needs for industrial applications. Additionally, the LCD controller with touch screen capability makes it possible to design creative and intuitive user interfaces that are required by many applications. Ordering Information Order Number TX28/454/128S/128F/I CPU 454MHz i.MX287 SDRAM 128MB Flash 128MB Temp. -40°C..85°C Ka-Ro electronics GmbH - Pascalstr. 22, D-52076 Aachen, Germany - Tel.: +49 2408 1402-0 (FAX -10) www.karo-electronics.de 2013-09-12 The i.MX28 family of multimedia applications processors integrates display, power management, CAN, USB, and Ethernet connectivity. The combination of advanced connectivity peripherals with a 454Mhz ARM9 processor core creates a platform for gateway products that bridge multiple networks. With attention to overall system cost, i.MX28 integrates physical USB interfaces (PHY), 10/100 Ethernet , power management, and a resistive touch screen display controller. TX28 STARTER-KIT V The Starter-Kit V is a ready-to-use development system for building applications based on the TX embedded processor boards. • • • • • • • • • • • • • • • DIMM200 TX socket Two SD-card sockets USB 2.0 OTG and USB 2.0 Host connector D-SUB 15 VGA connector 40pin LCD flat cable header 3.5mm headphone connector JTAG interface SGTL5000 audio codec TSC2007 touchscreen controller RS232 on 10pin flat cable and SUB-D header All pins of the TX socket are connected to daughter board slot for easy application design-in 10/100 Mbit/s Ethernet 5VDC Power Supply by USB-OTG or power jack. 100mm x 160mm Schematics of the base board are included for reference. DISPLAY OPTIONS The optional display comes with an FFC cable and a small adapter PCB which can be plugged directly onto the Starter-Kit 40pin LCD header. Option 1: 5,7“ VGA Resistive Touch • 5,7 inch TFT display • 640 x 480 dots • White LED backlight • Resistive Touchsceen Option 2: 5,7“ VGA PolyTouch™ • 5,7 inch TFT display • 640 x 480 dots • White LED backlight • Capacitive Touchsceen Ka-Ro electronics GmbH - Pascalstr. 22, D-52076 Aachen, Germany - Tel.: +49 2408 1402-0 (FAX -10) www.karo-electronics.de TX28 PINOUT PIN Marked yellow: Not connected Type Function i.MX28 Pad Name Alternate functions GPIO Description (refer to i.MX28 manuals for details) POWER SUPPLY & RESET 1-4 power VIN Module power supply input (3.0V-5.5V) 5-7, 9-12 power VOUT 3.3V power supply output (up to 0.2A) 8 3V3 BOOTMODE 47K-PU 13 power VBACKUP - 14 special PSWITCH 15 3V3 FEC_RESET_B 16 VIN #POR 17 3V3 #RESETIN 18 GND GND ENET0_RX_CLK 100K-PU 47K-PD 10K series ENET0_RX_ER ENET0_1588_EVENT2_IN GPIO4_13 10K-PU 10K-PU RESETN Boot mode select H: Boot from NAND / L: Boot from UART/USB DS1339 RTC backup power supply. Supply voltage must be held between 1.3V and 3.7V for proper RTC operation. This pin can be connected to a primary cell such as a lithium button cell. Additionally, this pin can be connected to a rechargeable cell or a super cap when used with the trickle charge feature. Used for chip power on or recovery. PSWITCH is at MID LEVEL & STARTUP by default. A 10kΩ resistor in series is used. Connect to GND for LOW LEVEL, connect to 3V3 for HIGH LEVEL, leave unconnected (MID LEVEL) if not used. => i.MX28 Reference manual chap 11.4 “PSWITCH Pin Functions” Ethernet PHY reset – active low output signal. This pin is hard wired to the onboard Ethernet PHY and provides a fixed function. Power On Reset - active low input signal. Typically a push button reset. Leave unconnected if not used. The i.MX28 is a PMU and an SoC, power-on reset is generated internally. If low the power supply connected to the i.MX28 is turned off. This pin resets the chip if it is low. This pin is pulled up to VDDIO33 with an internal resistor. No external pull up resistors are needed Ethernet 19 20 3V3 #ETN_LED2 21 analog ETN_TXP 22 power ETN_3V3 23 analog ETN_RXN 24 25 26 Transmit Data Negative: 100Base-TX or 10Base-T differential transmit output to magnetics. Active low - output is driven active when the operating speed is 100Mbps. This LED will go inactive when the operating speed is 10Mbps or during line isolation. Transmit Data Positive: 100Base-TX or 10Base-T differential transmit output to magnetics. analog ETN_TXN 3V3 +3.3V analog power supply output to magnetics Receive Data Negative: 100Base-TX or 10Base-T differential receive input from magnetics. Active low - output is driven active whenever the device detects a valid link, and blinks indicating activity. Receive Data Positive: 100Base-TX or 10Base-T differential receive input from magnetics. #ETN_LED1 analog ETN_RXP GND GND USB-HOST 27 3V3 USBH_VBUSEN SPDIF 28 3V3 #USBH_OC JTAG_RTCK 29 30 31 32 analog USBH_DM ENET1_RX_ER GPIO3_27 GPIO4_20 Active low over-current indicator input connected to a GPIO. 47K-PU USB1DM D- pin of the USB cable NC not connected analog USBH_DP GND Active high external 5V supply enable. This pin is used to enable the external VBUS power supply. USB1DP D+ pin of the USB cable GND USB-OTG / 2nd CAN 33 3V3 USBOTG_ID USB0ID 34 3V3 USBOTG_VBUSEN GPMI_CE2N 35 36 analog USBOTG_DM 3V3 #USBOTG_OC ID pin of the USB cable. For an A-Device ID is grounded. For a BDevice ID is floated. Active high external 5V supply enable. This pin is used to enable the GPIO0_18 external VBUS power supply. GPIO3_18 USB0DM GPMI_CE3N 37 analog USBOTG_DP USB0DP 38 power USBOTG_VBUS VDD5V 39 PWM2 USB1_OVERCURRENT CAN1_TX ENET0_RX_ER GND GND 40 3V3 I2C_DATA I2C0_SDA 41 3V3 I2C_CLK I2C0_SCL D- pin of the USB cable CAN1_RX SAIF1_MCLK GPIO0_19 Active low over-current indicator input connected to a GPIO. 10kΩ 47K-PU pull-up resistor. D+ pin of the USB cable I2C TIMROT_ROTARYB DUART_TX TIMROT_ROTARYA DUART_RX GPIO3_25 1K-PU GPIO3_24 10K-PU I2C Data I2C Clock Ka-Ro electronics GmbH - Pascalstr. 22, D-52076 Aachen, Germany - Tel.: +49 2408 1402-0 (FAX -10) www.karo-electronics.de TX28 PIN Type Function i.MX28 Pad Name Alternate functions GPIO Description (refer to i.MX28 manuals for details) PWM 42 3V3 PWM PWM0 I2C1_SCL DUART_RX GPIO3_16 PWM Output OWDAT SSP0_DATA7 SSP2_SCK GPIO2_7 The i.MX28 has no 1-Wire controller – a GPIO is used here instead. 1-Wire bus. Requires an external pull-up resistor. The recommended resistor is specified by the generic 1-Wire device used in a given system. 1-WIRE 43 3V3 CSPI – Configurable Serial Peripheral Interface 44 3V3 CSPI_SS AUART2_RX 45 3V3 CSPI_SS AUART2_TX 46 3V3 CSPI_MOSI SSP3_MOSI 47 3V3 CSPI_MISO SSP3_MISO 48 3V3 CSPI_SCLK SSP3_SCK 49 3V3 50 GND SSP3_SS0 SSP3_D1 SSP3_D4 SSP3_D2 SSP3_D5 AUART4_RX ENET1_1588_EVENT0_IN AUART4_RTS ENET1_1588_EVENT1_O AUART4_TX ENET1_1588_EVENT0_O AUART4_CTS ENET1_1588_EVENT1_IN GPIO3_8 SSP3 SPI Mode SSn1 Slave Select (Selectable polarity) signal GPIO3_9 SSP3 SPI Mode SSn2 Slave Select (Selectable polarity) signal GPIO2_25 Master Out/Slave In signal GPIO2_26 Master In/Slave Out signal GPIO2_24 Serial Clock signal GPIO2_27 GND SD – Secure Digital Interface 1 51 3V3 SD1_CD SSP0_DETECT GPIO2_9 SD Card Detect – connected to a GPIO 52 3V3 SD1_D[0] SSP0_DATA0 GPIO2_0 SD Data bidirectional signals—If the system designer does not want to make use of the internal pull-up, via the Pull-up enable register, a 50 K–69 K external pull up resistor must be added. 53 3V3 SD1_D[1] SSP0_DATA1 GPIO2_1 54 3V3 SD1_D[2] SSP0_DATA2 GPIO2_2 55 3V3 SD1_D[3] SSP0_DATA3 GPIO2_3 56 3V3 SD1_CMD SSP0_CMD GPIO2_8 SD Command bidirectional signal 57 3V3 SD1_CLK SSP0_SCK GPIO2_10 SD Output Clock. 58 GND GND GPIO3_3 Debug UART Transmit Data output signal GPIO3_2 Debug UART Receive Data input signal 1st UART 59 3V3 TXD AUART0_RTS 60 3V3 RXD AUART0_CTS 61 3V3 RTS/CTS IN AUART0_RX 62 3V3 CTS/RTS OUT AUART0_TX nd 2 AUART4_TX DUART_TX AUART4_RX DUART_RX I2C0_SCL DUART_CTS I2C0_SDA DUART_RTS GPIO3_0 GPIO3_1 Debug UART RTS/CTS handshake input signal (not available on version 2 - TX28-4020 and TX28-4021) Debug UART RTS/CTS handshake output signal (not available on version 2 - TX28-4020 and TX28-4021) UART 63 3V3 TXD AUART1_TX 64 3V3 RXD AUART1_RX 65 3V3 RTS/CTS IN AUART1_CTS 66 3V3 CTS/RTS OUT AUART1_RTS SSP3_CARD_DETECT PWM_1 SSP2_CARD_DETECT PWM_0 USB0_OVERCURRENTTIM ROT_ROTARYA USB0_ID TIMROT_ROTARYB GPIO3_5 Application UART 1 Transmit Data output signal GPIO3_4 Application UART 1 Receive Data input signal GPIO3_6 GPIO3_7 Application UART 1 RTS/CTS handshake input signal (not available on version 2 - TX28-4020 and TX28-4021) Application UART 1 RTS/CTS handshake output signal (not available on version 2 - TX28-4020 and TX28-4021) 3rd UART 67 3V3 TXD AUART3_TX 68 3V3 RXD AUART3_RX 69 3V3 RTS/CTS IN AUART3_CTS 70 3V3 CTS/RTS OUT AUART3_RTS 71 GND GND CAN0_RX ENET0_1588_EVENT0_IN CAN0_TX ENET0_1588_EVENT0_O CAN1_TX ENET0_1588_EVENT1_O CAN1_RX ENET0_1588_EVENT1_IN GPIO3_13 Application UART 3 Transmit Data output signal GPIO3_12 Application UART 3 Receive Data input signal GPIO3_14 GPIO3_15 Application UART 3 RTS/CTS handshake input signal (not available on version 2 - TX28-4020 and TX28-4021) Application UART 3 RTS/CTS handshake output signal (not available on version 2 - TX28-4020 and TX28-4021) Ka-Ro electronics GmbH - Pascalstr. 22, D-52076 Aachen, Germany - Tel.: +49 2408 1402-0 (FAX -10) www.karo-electronics.de TX28 PIN Type Function i.MX28 Pad Name Alternate functions GPIO Description (refer to i.MX28 manuals for details) KEYPAD / 1st CAN 72 3V3 KP_COL[0] I2C-bus I/O port / PCA9554 - IO0 73 3V3 KP_COL[1] - I2C-bus I/O port / PCA9554 - IO1 74 3V3 KP_COL[2] - I2C-bus I/O port / PCA9554 - IO2 75 3V3 KP_COL[3] - I2C-bus I/O port / PCA9554 - IO3 CAN0_TX ENET0_TX_ER 76 3V3 TXCAN GPMI_RDY2 77 3V3 KP_ROW[0] - I2C-bus I/O port / PCA9554 - IO4 78 3V3 KP_ROW[1] - I2C-bus I/O port / PCA9554 - IO5 79 3V3 KP_ROW[2] - I2C-bus I/O port / PCA9554 - IO6 80 3V3 KP_ROW[3] - 81 3V3 RXCAN 82 GND GND GPMI_RDY3 GPIO0_22 I2C-bus I/O port / PCA9554 - IO7 CAN0_RX HSADC_TRIGGER GPIO0_23 SSI 1 - Serial Audio Port 1 83 3V3 SSI1_INT SAIF0_MCLK 84 3V3 SSI1_RXD SAIF1_SDATA0 85 3V3 SSI1_TXD SAIF0_SDATA0 86 3V3 SSI1_CLK SAIF0_BITCLK 87 3V3 SSI1_FS SAIF0_LRCLK 88 GND GND PWM_3 AUART4_CTS PWM_7 SAIF0_SDATA1 PWM_6 AUART4_TX PWM_5 AUART4_RX PWM_4 AUART4_RTS GPIO3_20 GPIO GPIO3_26 Serial Audio Interface 0 serial data line 1 GPIO3_23 Serial Audio Interface 0 serial data line 0 GPIO3_22 Serial Audio Interface 0 serial bit clock GPIO3_21 Serial Audio Interface 0 left/right clock SSI 2 - Serial Audio Port 2 89 3V3 SSI2_INT LCD_DOTCLK SAIF1_MCLK ETM_TCLK 90 3V3 SSI2_RXD LCD_HSYNC SAIF1_SDATA1 ETM_TCTL GPIO1_29 Serial Audio Interface 1 serial data line 1 91 3V3 SSI2_TXD LCD_VSYNC SAIF1_SDATA0 GPIO1_28 Serial Audio Interface 1 serial data line 0 92 3V3 SSI2_CLK AUART2_CTS I2C1_SCL SAIF1_BITCLK GPIO3_10 Serial Audio Interface 1 serial bit clock 93 3V3 SSI2_FS AUART2_RTS I2C1_SDA SAIF1_LRCLK GPIO3_11 Serial Audio Interface 1 left/right clock 94 GND GND GPIO1_30 GPIO Secure Digital Interface 2 95 NC not connected 96 NC not connected 97 NC not connected 98 NC not connected 99 NC not connected 100 NC not connected 101 3V3 102 GND ENET_CLK Fixed function clock output to Ethernet PHY (not available on engineering sample version TX28-4020) GND Ka-Ro electronics GmbH - Pascalstr. 22, D-52076 Aachen, Germany - Tel.: +49 2408 1402-0 (FAX -10) www.karo-electronics.de TX28 PIN Type Function i.MX28 Pad Name Alternate functions GPIO Description (refer to i.MX28 manuals for details) Synchronous Serial Port 2 instead of the standard CMOS Sensor Interface 103 3V3 SSP0_DATA4 104 3V3 SSP1_SCK 105 3V3 SSP1_CMD 106 3V3 SSP2_SS0 107 3V3 SSP2_SS1 108 3V3 SSP2_SS2 109 3V3 SSP1_DATA0 110 3V3 SSP1_DATA3 111 GND 112 3V3 SSP2_MISO 113 3V3 SSP2_MOSI 114 3V3 SSP2_SCK 115 3V3 PWM1 116 GND SSP2_D0 SSP2_D1 ENET0_1588_EVENT2_O SSP2_D2 ENET0_1588_EVENT2_IN AUART3_TX SAIF1_SDATA2 SSP2_D1 USB1_OVERCURRENT SSP2_D2 USB0_OVERCURRENT SSP2_D6 ENET0_1588_EVENT3_O SSP2_D7 ENET0_1588_EVENT3_IN GPIO2_4 GPIO2_12 GPIO2_13 GPIO2_19 GPIO2_20 GPIO2_21 GPIO2_14 GPIO2_15 GND AUART3_RX SAIF1_SDATA1 AUART2_TX SAIF0_SDATA2 AUART2_RX SAIF0_SDATA1 I2C1_SDA DUART_TX GPIO2_18 GPIO2_17 GPIO2_16 GPIO3_17 GND LCD Controller and Smart LCD Controller GPIO1_0 57K-PD GPIO1_1 47K-PD GPIO1_2 57K-PU GPIO1_3 57K-PD GPIO1_4 47K-PD GPIO1_5 47K-PD Boot mode selection LCD Data Bus Boot mode selection LCD Data Bus Boot mode selection LCD Data Bus Boot mode selection LCD Data Bus Boot mode selection LCD Data Bus Boot mode selection LCD Data Bus ETM_DA6 GPIO1_6 LCD Data Bus ETM_DA7 GPIO1_7 LCD Data Bus GPIO1_8 LCD Data Bus GPIO1_9 LCD Data Bus 117 3V3 LD0 LCD_D00 ETM_DA0 118 3V3 LD1 LCD_D01 ETM_DA1 119 3V3 LD2 LCD_D02 ETM_DA2 120 3V3 LD3 LCD_D03 121 3V3 LD4 LCD_D04 122 3V3 LD5 LCD_D05 ETM_DA5 123 3V3 LD6 LCD_D06 124 3V3 LD7 LCD_D07 ETM_DA3 ETM_DA8 ETM_DA4 ETM_DA9 ETM_DA8 ETM_DA3 ETM_DA9 ETM_DA4 125 3V3 LD8 LCD_D08 126 3V3 LD9 LCD_D09 127 3V3 LD10 LCD_D10 ETM_DA10 GPIO1_10 LCD Data Bus 128 3V3 LD11 LCD_D11 ETM_DA11 GPIO1_11 LCD Data Bus 129 GND GND 130 3V3 LD12 LCD_D12 ETM_DA12 GPIO1_12 LCD Data Bus 131 3V3 LD13 LCD_D13 ETM_DA13 GPIO1_13 LCD Data Bus 132 3V3 LD14 LCD_D14 ETM_DA14 GPIO1_14 LCD Data Bus 133 3V3 LD15 LCD_D15 ETM_DA15 GPIO1_15 LCD Data Bus 134 3V3 LD16 LCD_D16 ETM_DA7 GPIO1_16 LCD Data Bus 135 3V3 LD17 LCD_D17 ETM_DA6 GPIO1_17 LCD Data Bus 136 3V3 LD18 LCD_D18 ETM_DA5 GPIO1_18 LCD Data Bus 137 3V3 LD19 LCD_D19 ETM_DA4 GPIO1_19 LCD Data Bus 138 3V3 LD20 LCD_D20 GPIO1_20 LCD Data Bus 139 3V3 LD21 LCD_D21 GPIO1_21 LCD Data Bus ENET1_1588_EVENT2_O ETM_DA3 ENET1_1588_EVENT2_IN ETM_DA2 at startup: BM0 (47K-PU if BOOTMODE=L) at startup: BM1 at startup: BM2 (10K-PD if BOOTMODE=L) at startup: BM3 (47K-PU if BOOTMODE=L) at startup: VOLTAGE SELECTOR at startup: ETM ENABLE Ka-Ro electronics GmbH - Pascalstr. 22, D-52076 Aachen, Germany - Tel.: +49 2408 1402-0 (FAX -10) www.karo-electronics.de TX28 PIN Type Function i.MX28 Pad Name Alternate functions 140 3V3 LD22 LCD_D22 141 3V3 LD23 LCD_D23 142 GND GND 143 3V3 HSYNC LCD_WR_RWN 144 3V3 VSYNC LCD_RD_E 145 3V3 OE_ACD LCD_CS LCD_ENABLE GPIO1_27 146 3V3 LSCLK LCD_RS LCD_DOTCLK GPIO1_26 47K-PU 147 GND GND ENET1_1588_EVENT3_O ETM_DA1 ENET1_1588_EVENT3_IN ETM_DA0 LCD_HSYNC ETM_TCLK LCD_VSYNC ETM_TCTL GPIO Description (refer to i.MX28 manuals for details) GPIO1_22 LCD Data Bus GPIO1_23 LCD Data Bus GPIO1_25 GPIO1_24 Boot mode selection at startup: OTP / RESISTOR LCD Dotclock Module Specific Signals 148 3V3 GPIO SSP0_DATA5 SSP2_D3 GPIO2_5 149 3V3 GPIO SSP0_DATA6 SSP2_CMD GPIO2_6 150 3V3 GPIO LCD_RESET LCD_VSYNC GPIO3_30 151 3V3 GPIO LCD_ENABLE GPIO1_31 ENET1_RXD0 ENET0_1588_EVENT0_O ENET1_RXD1 ENET0_1588_EVENT0_IN ENET1_TXD0 ENET0_1588_EVENT1_O ENET1_TXD1 ENET0_1588_EVENT1_IN ENET1_TX_EN ENET0_1588_EVENT3_O ENET1_RX_EN ENET0_1588_EVENT3_IN 152 3V3 GPIO ENET0_RXD2 GPIO4_9 153 3V3 GPIO ENET0_RXD3 154 3V3 GPIO ENET0_TXD2 155 3V3 GPIO ENET0_TXD3 156 3V3 GPIO ENET0_COL 157 3V3 GPIO ENET0_CRS 158 3V3 GPIO GPMI_CE1N SSP3_D3 GPIO0_17 159 3V3 GPIO GPMI_RDY1 SSP1_CMD GPIO0_21 160 GND GND 161 3V3 D[0] GPMI_D00 Fixed function used for NAND flash 162 3V3 D[1] GPMI_D01 Fixed function used for NAND flash 163 3V3 D[2] GPMI_D02 Fixed function used for NAND flash 164 3V3 D[3] GPMI_D03 Fixed function used for NAND flash 165 3V3 D[4] GPMI_D04 Fixed function used for NAND flash 166 3V3 D[5] GPMI_D05 Fixed function used for NAND flash 167 3V3 D[6] GPMI_D06 Fixed function used for NAND flash 168 3V3 D[7] GPMI_D07 Fixed function used for NAND flash 169 NC not connected 170 NC not connected 171 GND 172 NC not connected 173 NC not connected 174 NC not connected 175 NC not connected 176 NC not connected 177 NC not connected GPIO4_10 GPIO4_11 GPIO4_12 GPIO4_14 GPIO4_15 GND Ka-Ro electronics GmbH - Pascalstr. 22, D-52076 Aachen, Germany - Tel.: +49 2408 1402-0 (FAX -10) www.karo-electronics.de TX28 PIN Type Function i.MX28 Pad Name Alternate functions GPIO Description (refer to i.MX28 manuals for details) 178 NC 179 3V3 GPMI_CLE Fixed function GPMI_CLE used for NAND flash 180 3V3 GPMI_ALE Fixed function GPMI_ALE used for NAND flash 181 3V3 GPMI_WRN Fixed function GPMI_WRN used for NAND flash 182 3V3 GPMI_RDN Fixed function GPMI_RDN used for NAND flash 183 GND 184 NC not connected GND not connected 185 analog XN LRADC4 186 analog XP LRADC2 187 analog YN LRADC5 188 analog YP LRADC3 189 analog WIPER LRADC6 190 analog LRADC0 191 analog LRADC1 192 analog HSADC0 193 NC not connected 194 NC not connected 195 NC not connected 196 NC Touscreen ADC input channels General purpose measurements channels not connected 197 3V3 ENET0_TX_CLK 198 3V3 ENET_MDC 199 3V3 ENET0_MDIO 200 GND GND GPIO4_5 10K-PU Fixed function input used for Ethernet PHY Interrupt Fixed function ENET_MDC used for Ethernet PHY 1K-PU Fixed function ENET0_MDIO used for Ethernet PHY GND Ka-Ro electronics GmbH - Pascalstr. 22, D-52076 Aachen, Germany - Tel.: +49 2408 1402-0 (FAX -10) www.karo-electronics.de