SWRS245B December   2021  – December 2023 AM2732 , AM2732-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
    1. 3.1 Functional Block Diagram
  5. 4 Device Comparison
    1. 4.1 Related Products
  6. 5 Terminal Configuration and Functions
    1. 5.1 Pin Diagram
      1. 5.1.1 AM273x ZCE Pin Diagram
      2. 5.1.2 AM273x NZN Pin Diagram
    2. 5.2 Pin Attributes (AM273x ZCE, NZN Packages)
      1.      13
    3. 5.3 Signal Descriptions
      1. 5.3.1  ADC Signal Descriptions
        1.       16
      2. 5.3.2  CPTS Signal Descriptions
        1.       18
      3. 5.3.3  CSI 2.0 Signal Descriptions
        1.       20
      4. 5.3.4  DMM Signal Descriptions
        1.       22
      5. 5.3.5  ECAP Signal Descriptions
        1.       24
      6. 5.3.6  EPWM Signal Descriptions
        1.       26
        2.       27
        3.       28
        4.       29
      7. 5.3.7  GPIO Signal Descriptions
        1.       31
        2.       32
      8. 5.3.8  I2C Signal Descriptions
        1.       34
        2.       35
        3.       36
      9. 5.3.9  Clock Signal Descriptions
        1.       38
        2.       39
      10. 5.3.10 JTAG Signal Descriptions
        1.       41
      11. 5.3.11 LVDS Signal Descriptions
        1.       43
      12. 5.3.12 MCAN Signal Descriptions
        1.       45
        2.       46
      13. 5.3.13 MCASP Signal Descriptions
        1.       48
        2.       49
        3.       50
      14. 5.3.14 Ethernet Signal Descriptions
        1.       52
        2.       53
        3.       54
        4.       55
      15. 5.3.15 GPIO Signal Descriptions
        1.       57
        2.       58
      16. 5.3.16 Power Supply Signal Descriptions
        1.       60
      17. 5.3.17 QSPI Signal Descriptions
        1.       62
      18. 5.3.18 Reserverd Signal Descriptions
        1.       64
      19. 5.3.19 UART Signal Descriptions
        1.       66
        2.       67
      20. 5.3.20 SPI Signal Descriptions
        1.       69
        2.       70
        3.       71
        4.       72
      21. 5.3.21 System Signal Descriptions
        1.       74
      22. 5.3.22 Trace Signal Descriptions
        1.       76
    4. 5.4 Pin Connectivity Requirements
  7. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings - Automotive
    3. 6.3  Power-On Hours (POH)
      1. 6.3.1 Automotive Temperature Profile
      2. 6.3.2 Industrial Temperature Profile
    4. 6.4  Recommended Operating Conditions
    5. 6.5  Operating Performance Points
    6. 6.6  Power Supply Specifications
    7. 6.7  I/O Buffer Type and Voltage Rail Dependency
    8. 6.8  CPU Specifications
    9. 6.9  Thermal Resistance Characteristics for nFBGA Package [ZCE285A]
    10. 6.10 Thermal Resistance Characteristics for nFBGA Package [NZN225A]
    11. 6.11 Power Consumption Summary
    12. 6.12 Timing and Switching Characteristics
      1. 6.12.1 Power Supply Sequencing and Reset Timing
      2. 6.12.2 Clock Specifications
      3. 6.12.3 Peripheral Information
        1. 6.12.3.1  QSPI Flash Memory Peripheral
          1. 6.12.3.1.1 QSPI Timing Conditions
          2. 6.12.3.1.2 QSPI Timing Requirements
          3. 6.12.3.1.3 QSPI Switching Characteristics
        2. 6.12.3.2  MIBSPI Peripheral
          1. 6.12.3.2.1 SPI Timing Conditions
          2. 6.12.3.2.2 SPI Master Mode Timing and Switching Parameters (CLOCK PHASE = 0, SPICLK = output, SPISIMO = output, and SPISOMI = input)
          3. 6.12.3.2.3 SPI Master Mode Timing and Switching Parameters (CLOCK PHASE = 1, SPICLK = output, SPISIMO = output, and SPISOMI = input)
          4. 6.12.3.2.4 SPI Slave Mode Timing and Switching Parameters (SPICLK = input, SPISIMO = input, and SPISOMI = output)
        3. 6.12.3.3  Ethernet Switch (RGMII/RMII/MII) Peripheral
          1. 6.12.3.3.1  RGMII/GMII/MII Timing Conditions
          2. 6.12.3.3.2  RGMII Transmit Clock Switching Characteristics
          3. 6.12.3.3.3  RGMII Transmit Data and Control Switching Characteristics
          4. 6.12.3.3.4  RGMII Recieve Clock Timing Requirements
          5. 6.12.3.3.5  RGMII Recieve Data and Control Timing Requirements
          6. 6.12.3.3.6  RMII Transmit Clock Switching Characteristics
          7. 6.12.3.3.7  RMII Transmit Data and Control Switching Characteristics
          8. 6.12.3.3.8  RMII Receive Clock Timing Requirements
          9. 6.12.3.3.9  RMII Receive Data and Control Timing Requirements
          10. 6.12.3.3.10 MII Transmit Switching Characteristics
          11. 6.12.3.3.11 MII Receive Clock Timing Requirements
          12. 6.12.3.3.12 MII Receive Timing Requirements
          13. 6.12.3.3.13 MII Transmit Clock Timing Requirements
          14. 6.12.3.3.14 MDIO Interface Timings
        4. 6.12.3.4  LVDS/Aurora Instrumentation and Measurement Peripheral
          1. 6.12.3.4.1 LVDS Interface Configuration
          2. 6.12.3.4.2 LVDS Interface Timings
        5. 6.12.3.5  UART Peripheral
          1. 6.12.3.5.1 UART Timing Requirements
        6. 6.12.3.6  I2C Protocol Definition
          1. 6.12.3.6.1 I2C Timing Requirements #GUID-D615B3D8-5F52-430D-93CB-70204118ACE4/T4362547-185
        7. 6.12.3.7  Controller Area Network - Flexible Data-Rate (CAN-FD)
          1. 6.12.3.7.1 Dynamic Characteristics for the CAN-FD TX and RX Pins
        8. 6.12.3.8  CSI-2 Peripheral
        9. 6.12.3.9  General Purpose ADC (GPADC)
        10. 6.12.3.10 Enhanced Pulse-Width Modulator (ePWM)
        11. 6.12.3.11 Enhanced Capture (eCAP)
        12. 6.12.3.12 General-Purpose Input/Output
          1. 6.12.3.12.1 Switching Characteristics for Output Timing versus Load Capacitance (CL) #GUID-1BEBEADE-CEC6-42DA-A124-5081550EEDD7/T4362547-45 #GUID-1BEBEADE-CEC6-42DA-A124-5081550EEDD7/T4362547-50
      4. 6.12.4 Emulation and Debug
        1. 6.12.4.1 Emulation and Debug Description
        2. 6.12.4.2 JTAG Interface
          1. 6.12.4.2.1 Timing Requirements for IEEE 1149.1 JTAG
          2. 6.12.4.2.2 Switching Characteristics for IEEE 1149.1 JTAG
        3. 6.12.4.3 ETM Trace Interface
          1. 6.12.4.3.1 ETM TRACE Timing Requirements
          2. 6.12.4.3.2 ETM TRACE Switching Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Main Subsystem
    3. 7.3 DSP Subsystem
    4. 7.4 Radar Control Subsystem
    5. 7.5 Other Subsystems
      1. 7.5.1 Radar A2D Data Format Over CSI2 Interface
      2. 7.5.2 ADC Channels (Service) for User Application
    6. 7.6 Boot Modes
  9. 8 Applications, Implementation, and Layout
    1. 8.1 Typical Application
      1. 8.1.1 Schematic
      2. 8.1.2 Layout
        1. 8.1.2.1 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Nomenclature
      1. 9.1.1 Standard Package Symbolization
      2. 9.1.2 Device Naming Convention
    2. 9.2 Tools and Software
    3. 9.3 Documentation Support
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • NZN|225
  • ZCE|285
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.6 Boot Modes

AM273x bootloader functionality is controlled by a set of start on power (SOP) pins. These pins states are latched on de-assertion of the NRESET pin after power on of the device. The SOP pins are multiplexed with functional mode signals before and during NRESET de-assertion. After bootloader execution the functional mode operation is then restored. See the power on reset timing sequence for more details. The following tables describe the SOP pin operation.

Host hardware should provide a means for driving these SOP pins to their required states during NRESET de-assertion, but also allow for their functional mode operation if required by the intended application.

Table 7-3 SOP Pins
Pin SOP Mode Signal Name Pinlist Signal Name
D6 SOP[0] TDO
E17 SOP[1] MSS_MIBSPIB_CS2
F1 SOP[2] PMIC_CLKOUT
V9 SOP[3] MSS_UARTB_TX
W2 SOP[4] MSS_UARTA_TX
Table 7-4 SOP Pin Modes
Boot Options SOP Mode
Bootmode SOP Modes
  • SOP[2:0] = 0b011 selects SOP_MODE2
  • SOP[2:0] = 0b001 selects SOP_MODE4
  • SOP[2:0] = 0b101 selects SOP_MODE5
  • All other states reserved and should not be selected.
Crystal Detect SOP Modes
  • SOP[4:3] = 0b00 selects 40 MHz Crystal Mode
  • SOP[4:3] = 0b01 selects 45.1584 MHz Crystal Mode
  • SOP[4:3] = 0b10 selects 49.152 MHz Crystal Mode
  • SOP[4:3] = 0b11 selects 50 MHz Crystal Mode
Table 7-5 Bootmode SOP Descriptions
Bootmode SOP Modes Function Description
SOP_MODE2 Development Mode Development boot mode. The AM273x ROM bootloader will setup the device to wait for a JTAG debugger connection.
SOP_MODE4 Functional Mode Functional boot mode of the AM273x device. In this mode, the ROM bootloader will attempt to load a valid secondary bootloader image from primarily the QSPI interface and secondarily the SPI host interface.
SOP_MODE5 Device Management Mode QSPI flash programming boot mode of the AM273x device. In this mode the ROM bootloader will attempt to receive a valid QSPI secondary bootloader image over MSS_UARTA_TX/RX (pins W2, U3) and attempt to flash an attached QSPI memory with this image.
Table 7-6 Crystal Detect SOP Mode Description
Crystal Detect SOP Modes
40 MHz Crystal Crystal Mode ROM bootloader image expects a 40 MHz nominal crystal clock source.
45.1584 MHz Crystal Mode ROM bootloader image expects a 45.1584 MHz nominal crystal clock source.
49.152 MHz Crystal Mode ROM bootloader image expects a 49.152 MHz nominal crystal clock source.
50 MHz Crystal Mode ROM bootloader image expects a 50 MHz nominal crystal clock source.