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This document describes the hardware architecture of the AM438x evaluation module (EVM), part number
TMDXEVM438x, which is based on the Texas Instruments AM438x processor. This EVM is also
commonly known as the AM438x Electronic Point of Sale (ePOS) EVM.
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SPRUIF8 - June 2017
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Copyright © 2017, Texas Instruments Incorporated
AM438x ePOS EVM Hardware
Contents
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User's Guide
SPRUIF8 - June 2017
AM438x ePOS EVM Hardware
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Related Manuals for Texas Instruments AM438x ePOS EVM
Summary of Contents for Texas Instruments AM438x ePOS EVM
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Page 1: Table Of Contents
AM438x ePOS EVM Hardware This document describes the hardware architecture of the AM438x evaluation module (EVM), part number TMDXEVM438x, which is based on the Texas Instruments AM438x processor. This EVM is also commonly known as the AM438x Electronic Point of Sale (ePOS) EVM. - Page 2 AM438x ePOS EVM Block Diagram List of Tables ................AM438x Power Supplies From TPS65218 ....................... Other Power Supplies ................AM438x ePOS EVM APM Sense Resistors ....................SYSBOOT DIP Switches ..................AM438x ePOS EVM EEPROM Data ................AM438x SDMMC0 Connector Pin Details ..................
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Page 3: Description
Description The AM438x ePOS EVM is a stand-alone test, development, and evaluation module system that lets developers write software and develop hardware around an AM438x processor subsystem. The main elements of the AM438x subsystem are already available on the base board of the EVM. The base board gives developers the basic resources needed for most general-purpose type projects that encompass the AM438x as the main processor. -
Page 4: Am438X Epos Evm Bottom View
System View www.ti.com Figure 2. AM438x ePOS EVM Bottom View AM438x ePOS EVM Hardware SPRUIF8 – June 2017 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... -
Page 5: Functional Blocks Description
Functional Blocks Description www.ti.com Functional Blocks Description The AM438x ePOS EVM has a camera board and/or wireless add-on boards. Figure 3 shows the block diagram of the ePOS EVM. 7" LCD WITH CAPACITIVE TOUCH SAM CARD NAND 4GBIT CONNX3 LPDDR2... -
Page 6: Clocks
Memories Supported 3.4.1 LPDDR2 SDRAM The AM438x ePOS EVM contains 8Gb (256M x 32, 2 dies) of LPDDR2 SDRAM memory from Micron ® which has dual dies. The part number for the LPDDR2 SDRAM memory device used is MT42L256M32D2LG-25. The package used is an 168-ball VFBGA package. -
Page 7: Usb
Functional Blocks Description www.ti.com The AM438x ePOS EVM supports two USB ports. The USB ports are connected to a microAB connector and a standard type-A connector. The ESD device, TPD4S012, and common choke filter, ACM2012 (TDK), are used on the USB signals before they are connected to the AM438x pins. The ID pin of the microAB connector can be tied to ground through a J24 jumper to look like a B device. -
Page 8: Magnetic Stripe Reader
Power Source The AM438x ePOS EVM uses an external AC to +5 VDC (rated 2.5 A minimum) power adapter. The switch near the power cable is used for powering on and off. The main power is on when the power switch is positioned away from the power supply jack. -
Page 9: Apm Sense Resistors
INA226 converter EVM. The AM438x ePOS EVM has the option to access the INA devices through the onboard AM438X I2C0 port by closing jumpers J101 and J102. By default, the INA226 converter is connected to the 5-pin header J39. -
Page 10: I2C Address Assignments
Available space for other nonvolatile codes and data JTAG The AM438x ePOS EVM supports embedded XDS100V2 USB emulation using the microAB connector. One of the FT2232 ports is used to covert these JTAG signals to USB and the other port is used for UART signals. -
Page 11: User Interfaces
Most interfaces on the EVM are fixed to certain functions. See the AM438x data sheet to determine other possible pin MUX configurations, to enable different functionalities for signals that are not fixed to certain function board connectors. SPRUIF8 – June 2017 AM438x ePOS EVM Hardware Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... -
Page 12: Board Connectors
Backlight power + VLED- Backlight power – VLED- Backlight power – Ground VLCD_VCOM Voltage VLCD_DVDD Voltage Ground LCD_EN LCD enable LCD_VSYNC LCD vertical sync AM438x ePOS EVM Hardware SPRUIF8 – June 2017 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... - Page 13 Left-right scan direction select LCD_UPDOWN Up-down scan direction select VLCD_VGH Voltage high VLCD_VGL Voltage low VLCD_AVDD Voltage analog LCD_RESETn Reset VLCD_VCOM Voltage LCD_DITHER Dither Ground SPRUIF8 – June 2017 AM438x ePOS EVM Hardware Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated...
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Page 14: Touch Connector - J45
Table 10. AM438x Micro AB Connector – USB Port 0 Pin Details Pin No. Signal Name Description VUSB_VBUS0 USB0 bus voltage USB0_CONN_DM USB0 data minus USB0_CONN_DP USB0 data plus USB0_ID USB0 identification DGND Ground AM438x ePOS EVM Hardware SPRUIF8 – June 2017 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... -
Page 15: Camera Interface Header - J15
CAM1_GIO0 GPIO 0 CAM1_DATA5 Data 5 CAM1_BUF_EN Buffer enable CAM1_WEN Write enable CAM1_FIELD Field Ground CAM1_I2C_SCL C clock CAM1_SRCCLK Clock CAM1_I2C_DTA C data SPRUIF8 – June 2017 AM438x ePOS EVM Hardware Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... -
Page 16: Hdmi Header Connector - J32
Table 14. RS-232 Connector 1 Pin Details Pin No. Signal Name Description RS232_0_RXD Receive RS232_0_TXD Transmit Ground RS232_0_RTS Request to send RS232_0_CTS Clear to send AM438x ePOS EVM Hardware SPRUIF8 – June 2017 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... -
Page 17: Smart Card Connector - J27
Table 17. SAM Card Connector Pin Details Pin Name Signal Name Description VCC_SC2 Voltage SAMCRD_RST Smart card reset SAMCRD_CLK Smart card clock Ground VCC_SC2 Voltage SAMCRD_IO SPRUIF8 – June 2017 AM438x ePOS EVM Hardware Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... -
Page 18: Tamper Header - J34
TPMSS_OUT TPMSS_out signal TM_PIO_8 I/O 8 TM_PIO_9 I/O 9 TM_PIO_10 I/O 10 TM_PIO_11 I/O 11 RESERVED3 Reserved RESERVED4 Reserved RTC_ALARM RTC alarm Ground AM438x ePOS EVM Hardware SPRUIF8 – June 2017 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... -
Page 19: Platform Test Header - J35
GPIO GPIO5_5 GPIO GPIO5_13 GPIO AM438X_AIN5 Analog input 5 GNDA_ADC Analog ground AM438X_AIN4 Analog input 4 VDDA_ADC Voltage ADC AM438X_AIN3 Analog input 3 SPRUIF8 – June 2017 AM438x ePOS EVM Hardware Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... -
Page 20: Magnetic Stripe Reader Header - J36
Monitoring analog input 2 MON_AIN6 Monitoring analog input 6 MON_AIN3 Monitoring analog input 3 MON_AIN7 Monitoring analog input 7 GND_ADC Analog ground GND_ADC Analog ground AM438x ePOS EVM Hardware SPRUIF8 – June 2017 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... -
Page 21: Gpio Header - J38
General-purpose I/O 13 GPIO14 General-purpose I/O 14 GPIO15 General-purpose I/O 15 GPIO16 General-purpose I/O 16 GPIO17 General-purpose I/O 17 DGND Ground DGND Ground SPRUIF8 – June 2017 AM438x ePOS EVM Hardware Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... -
Page 22: Printer Header - J90
PRINT_SPI_CLK SPI clock DGND Ground PRINT_SPI_CSn SPI chip select PRINT_SPI_MOSI SPI master out slave in PRINT_SPI_MISO SPI master in slave out DGND Ground AM438x ePOS EVM Hardware SPRUIF8 – June 2017 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... -
Page 23: Spi Headers
I2C header. Table 26. I2C - Header Pin Details Pin No. Signal Name Description PWRMON_I2CSCL C clock PWRMON_I2CSDA C data DGND Ground PM_ALERT Alert SPRUIF8 – June 2017 AM438x ePOS EVM Hardware Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... -
Page 24: Automation Header - J97
Power monitor I C data DGND Ground EVM Important Notices The standard terms and conditions for TI Evaluation Modules can be downloaded here. AM438x ePOS EVM Hardware SPRUIF8 – June 2017 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated... - Page 25 IMPORTANT NOTICE FOR TI DESIGN INFORMATION AND RESOURCES Texas Instruments Incorporated (‘TI”) technical, application or other design advice, services or information, including, but not limited to, reference designs and materials relating to evaluation modules, (collectively, “TI Resources”) are intended to assist designers who are developing applications that incorporate TI products;...
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