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Texas Instruments LaunchPad AM261 Series User Manual
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Texas Instruments LaunchPad AM261 Series User Manual

Texas Instruments LaunchPad AM261 Series User Manual

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User's Guide
AM261x LaunchPad User Guide
Description
The AM261x LaunchPad
the Texas Instruments
™
Sitara
to start developing on the AM261x MCUs with onboard emulation for programming and debugging as well as
buttons and LEDs for a simple user interface. The LaunchPad also features two independent BoosterPack XL
expansion connectors, two onboard FLASHes and one FLASH expansion connector, two Ethernet PHY add-on
board connectors, onboard Controller Area Network (CAN) transceiver, and an onboard XDS110 debug probe.
SPRUJF1 – NOVEMBER 2024
Submit Document Feedback
™
development kit is a simple and inexpensive hardware evaluation module (EVM) for
™
AM261x series of microcontrollers (MCUs). This EVM provides an easy way
Copyright © 2024 Texas Instruments Incorporated
Description
AM261x LaunchPad User Guide
1

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Summary of Contents for Texas Instruments LaunchPad AM261 Series

  • Page 1 FLASHes and one FLASH expansion connector, two Ethernet PHY add-on board connectors, onboard Controller Area Network (CAN) transceiver, and an onboard XDS110 debug probe. SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 2 4.1 Sitara MCU+ Academy..............................49 5 References.................................... 5.1 Reference Documents..............................5.2 Other TI Components Used in This Design........................5.3 Related Documentation From Texas Instruments......................6 Revision History................................... List of Figures Figure 1-1. AM261x LaunchPad Board............................Figure 1-2. System Architecture..............................Figure 1-3. AM261x LaunchPad Top Components Identification....................8...
  • Page 3 (J2/J4)..................46 Table 2-28. Mode 11 : Standard C2000 DRVx Booster Packs (J5/J7)..................46 Table 2-29. Mode 11 : Standard C2000 DRVx Booster Packs (J6/J8)..................47 SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 4 Two independent BoosterPack XL (40 pin) standard connectors • Onboard memory: – 2x 64Mb OSPI Flash – 1 Mb I2C Board ID EEPROM AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 5 The AM261(U1) SoC on the LaunchPad can reach temperatures of around 54℃ during high power consumption use cases as per internal testing. This user guide statement is to alert users to this temperature condition. SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 6 USB type-C cable 1.4 Device Information 1.4.1 System Architecture Overview The below image shows the overall top level architecture of the AM261x LaunchPad. AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 7 Security Subsystems and SoC Firewalls are both closed • TIFS-MCU and SBL need to be signed with active customer key 1.4.3 Compliance All components selected meet RoHS compliance. SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 8 BoosterPack Headers. You can also build your own BoosterPack by following the design guidelines on TI’s website. Texas Instruments even helps you promote your BoosterPack to other members of the community. TI offers a variety of avenues for you to reach potential customers with your solutions.
  • Page 9 LaunchPad Module Overview Figure 1-4. AM261x LaunchPad Bottom Components Identification SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 10 DC barrel jack to type-C – 5V, 1.5A power adapter with USB-C captive cable or receptacle – PC USB type-C port not capable of 3A AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 11 VCC3V3_TA remains in the off state. The board gets powered on completely only when the source can provide 5V at 3A. Figure 2-2. Type-C CC Configuration SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 12 LDO VIN - 3.3V • LDO VOUT - 1.8V • Ethernet Port 2.5V • Buck_3 VIN - 5.0V • Buck_3 VOUT - 1.2V AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 13 LED will glow to indicate communication over JTAG Note DS2 LED that correspond to SAFETY_ERROR is always ON. Figure 2-3. Power Status LEDs SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 14 Hardware Description www.ti.com 2.1.1.3 Power Tree Figure 2-4. Power Tree Diagram of AM261x LaunchPad AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 15 Table 2-4. LaunchPad Push Buttons Push Button Signal Function PORz SoC PORz reset input RESETz SoC warm reset input INT1 User Interrupt Signal SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 16 L2 memory to process. In case of any failure it falls back to UART boot mode. Supports USB 2.0 device mode at High-Speed (HS, 480 Mbps) AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 17 IO Expander is done through the I2C0 bus. The signals that are coming out of the IO Expander shown in Figure 2-7. Please refer to TCA6408ARGTR-Datasheet for programming guide of TCA6408ARGTR. Figure 2-7. IO Expander SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 18 Headers PR0_PRU1 / CPSW1 Modular Ethernet MDIO PR0_PRU1_GPIO / PR0_PRU1_PERIPHx Expansion CPSW1 Header 2 CPSW MDIO Figure 2-8. AM261x LaunchPad Functional Block Diagram AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 19 Table 2-6. GPIO Mapping Table Active GPIO Description GPIO Functionality Net Name Status GPIO LED GPIO84 GPIO AM261_LED_GPIO84 Interrupt To SoC GPIO124 Interrupt AM261_INT_PB_GPIO124 SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 20 The PORz signal is driven by a 2-input AND gate that generates a power on reset for the MAIN domain when: • The PMIC's(TPS650360) NRSTOUT is driven low . • The user push button (SW1) is pressed. AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 21 The AM261x LaunchPad also has an external interrupt to the SoC , INT1, that occurs when: • The user push button (SW3) is pressed. SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 22 The LaunchPad also has a on board crystal (Y4) of frequency 16MHz which is clock source for the XDS110 for UART-USB JTAG support. Figure 2-11. AM261x LaunchPad Clock Tree AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 23 166MHz. The OSPI flash is powered by the 1.8V system supply. Figure 2-12. OSPI Flash Interface SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 24 The Write Protect pin for the EEPROM is by default pulled down to ground and therefore Write Protect is disabled. Figure 2-13. Board ID EEPROM AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 25 IO expander signal that selects between CPSW MDIO/MDC and ICSSM MDIO/MDC signals. The reset input for the PHY from Ethernet port connector is controlled by the PORz AM261x SoC output signal. SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 26 IO expander signal that selects between CPSW MDIO/MDC and ICSSM MDIO/MDC signals. The reset input for the PHY from Ethernet port connector is controlled by the PORz AM261x SoC output signal. AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 27 The AM261x LaunchPad uses two AM261x SoC inter-integrated circuit (I2C) ports to operate as a controller for various targets. I2C data and clock lines needs to be pulled up to the 3.3V system voltage supply to enable communication. Figure 2-16. I2C Targets SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 28 7 bit device address for the PMIC is 1100000 0b1100000 0b1100000 0x60 Note Underlined address bits are fixed based on the device addressing and cannot be configured. AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 29 LEDs, and the driver has an I2C address of 0x01. Figure 2-17. Industrial Application I2C LED Array SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 30 2:1 mux (TS3DDR3812RUAR) that is responsible for selecting SPI0 signals for proper function. The mux is driven by an IO Expander. All SPI2 signals are directly routed to the boosterpack. Figure 2-18. SoC SPI to BoosterPack AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 31 XDS110 allows for the emulator to maintain a connection when power to the LaunchPad is removed. UART3 instance is mapped directly to the BoosterPack header. Figure 2-19. UART SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 32 The low and high level CAN bus input output lines are terminated to a three pin header. AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 33 Port A ↔ Port C/COM ↔NO HIGH PRU Signals Selected Port A ↔ Port C/COM ↔NO HIGH HIGH MCAN TX/RX Selected Port A ↔ Port B/COM ↔NC SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 34 The XDS110 controls two power status LEDs. For more information on the Power Status LEDs refer to Power Status LEDs Figure 2-22. JTAG Interface to XDS110 AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 35 Output to change the boot modes. TA_I2C_SDA I2C Data signal used to communicate with bootmode IO expander to Output change the boot modes. SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 36 LIN1_TX HIGH Port A ↔ Port B PR1_PRU1_GPIO0 HIGH Port A ↔ Port B PR1_PRU1_GPIO0 HIGH HIGH Port A ↔ Port C LIN1_TX AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 37 LaunchPad are ESD protected. Figure 2-24. ADC/DAC Signal Pathing Multiple muxes are involved from AM261x Soc to BoosterPack connectors. Detailed table is given in Boosterpack section. SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 38 External ADC VREF Header Pin 4-5 OPEN - Allow for reference to be AM261x on-die LDO reference Pin 5-6 External ADC VREF Header AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 39 All eQEP signals have series termination resistors between the AM261x SoC and the Voltage Level Translator (TXB0108RGYR). The voltage level shifter is responsible for translating the 3.3V to 5V. SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 40 Type C power input, an IO expander is used to select between them. AM261x supports USB DFU Bootmode. Boot mode selection and details are given in Bootmode Figure 2-28. USB Connection AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 41 The AM261x LaunchPad is intended to be compatible with mainly the below 4 Booster Packs, which have different pin out. • Standard LaunchPad Booster Pack as per https://www.ti.com/lit/ml/slat157/slat157.pdf SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 42 BoosterPack Net Name Selected net VSYS_3V3_BP VSYS_3V3_BP VSYS_5V0_BP_2 VSYS_5V0_BP_2 ADC1_AIN1 ADC1_AIN1 UART5_RXD UART5_RXD/PR1_PRU1_GPIO8 ADC0_AIN2/GPIO46 ADC0_AIN2 PR1_PRU1_GPIO2 UART5_TXD/PR1_PRU1_GPIO7 ADC1_AIN2/GPIO90 ADC1_AIN2 PR1_PRU1_GPIO19 PR1_PRU1_GPIO19 ADC2_AIN2/GPIO106 ADC2_AIN2 AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 43 Selected net BoosterPack Net Name BoosterPack Net Name Selected net EPWM2_A EPWM2_A EPWM2_B EPWM2_B SPI0_CS0/PR1_PRU1_GPIO3 PR1_PRU1_GPIO3 EPWM3_A EPWM3_A PR1_PRU1_GPIO12 PR1_PRU1_GPIO12 EPWM3_B EPWM3_B PR1_PRU1_GPIO4 PR1_PRU1_GPIO4 SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 44 Table 2-22. Mode 10: BOOSTXL-IOLINKM-8 (J1/J3) Selected net BoosterPack Net Name BoosterPack Net Name Selected net VSYS_3V3_BP VSYS_3V3_BP VSYS_5V0_BP_1 VSYS_5V0_BP_1 ADC0_AIN1 ADC0_AIN1 UART3_RXD UART3_RXD ADC0_AIN0 ADC0_AIN0 AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 45 Table 2-25. Mode 10 : BOOSTXL-IOLINKM-8 (J6/J8) Selected net BoosterPack Net Name BoosterPack Net Name Selected net EPWM5_A EPWM5_A EPWM5_B EPWM5_B SPI2_CS1 SPI2_CS1 EPWM6_A EPWM6_A SPI2_CS0 SPI2_CS0 SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 46 Selected net BoosterPack Net Name BoosterPack Net Name Selected net VSYS_3V3_BP VSYS_3V3_BP VSYS_5V0_BP_2 VSYS_5V0_BP_2 ADC1_AIN1 ADC1_AIN1 UART5_RXD UART5_RXD/PR1_PRU1_GPIO8 ADC0_AIN2/GPIO46 GPIO46 PR1_PRU1_GPIO2 UART5_TXD/PR1_PRU1_GPIO7 ADC1_AIN2/GPIO90 GPIO90 AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 47 EPWM7_A PORZ PORZ EPWM7_B EPWM7_B SPI2_D0 SPI2_D0 LIN2_TXD LIN2_TXD SPI2_D1 SPI2_D1 LIN2_RXD LIN2_RXD GPIO6 GPIO6 MCAN1_TX MCAN1_TX/PR1_PRU0_GPIO7 GPIO5 GPIO5 MCAN1_RX MCAN1_RX/PR1_PRU0_GPIO9 GPIO1 GPIO1 SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 48 PR0_PRU0_GPIO8(GPIO90) - pr0_mii0_rxlink - should connect to RX_LINK of Ethernet connector 0 (TP52). • PR0_PRU1_GPIO8(GPIO106) - pr0_mii1_rxlink - should connect to RX_LINK of Ethernet connector 1 (TP46). AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 49 MCU+ software and tools on supported devices. The MCU+ Academy features easy-to-use training modules that range from the basics of getting started to advanced development topics. SPRUJF1 – NOVEMBER 2024 AM261x LaunchPad User Guide Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 50 TPS796xx 1-A Low-Dropout Linear Regulators • TXB0108 8-Bit Bidirectional Voltage-Level Translator with Auto-Direction Sensing • TCA6408ARGTR 8-bit translating 1.65- to 5.5-V I2C/SMBus I/O expander AM261x LaunchPad User Guide SPRUJF1 – NOVEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 51 References 5.3 Related Documentation From Texas Instruments AM261x Documentation • AM261x Data sheet • AM261x Errata • AM261x Technical Reference Manual • AM261x Register Addendum • AM261x Flash Selection Guide • Submit Request for AM261x HSM Addendum here. AM261x Software •...
  • Page 52 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2024, Texas Instruments Incorporated...