JAJSE44B May   2017  – April 2018 IWR1642

PRODUCTION DATA.  

  1. 1 デバイスの概要
    1. 1.1 特長
    2. 1.2 アプリケーション
    3. 1.3 概要
    4. 1.4 機能ブロック図
  2. 2 改訂履歴
  3. 3 Device Comparison
    1. 3.1 Related Products
  4. 4 Terminal Configuration and Functions
    1. 4.1 Pin Diagram
    2. 4.2 Pin Attributes
      1. Table 4-3 PAD IO Register Bit Descriptions
    3. 4.3 Signal Descriptions
      1. Table 4-4 Signal Descriptions - Digital
      2. Table 4-5 Signal Descriptions - Analog
    4. 4.4 Pin Multiplexing
  5. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Power-On Hours (POH)
    4. 5.4  Recommended Operating Conditions
    5. 5.5  Power Supply Specifications
    6. 5.6  Power Consumption Summary
    7. 5.7  RF Specification
    8. 5.8  CPU Specifications
    9. 5.9  Thermal Resistance Characteristics for FCBGA Package [ABL0161]
    10. 5.10 Timing and Switching Characteristics
      1. 5.10.1  Power Supply Sequencing and Reset Timing
      2. 5.10.2  Input Clocks and Oscillators
        1. 5.10.2.1 Clock Specifications
      3. 5.10.3  Multibuffered / Standard Serial Peripheral Interface (MibSPI)
        1. 5.10.3.1 Peripheral Description
        2. 5.10.3.2 MibSPI Transmit and Receive RAM Organization
          1. Table 5-7  SPI Timing Conditions
          2. Table 5-8  SPI Master Mode Switching Parameters (CLOCK PHASE = 0, SPICLK = output, SPISIMO = output, and SPISOMI = input)
          3. Table 5-9  SPI Master Mode Input Timing Requirements (CLOCK PHASE = 0, SPICLK = output, SPISIMO = output, and SPISOMI = input)
          4. Table 5-10 SPI Master Mode Switching Parameters (CLOCK PHASE = 1, SPICLK = output, SPISIMO = output, and SPISOMI = input)
          5. Table 5-11 SPI Master Mode Input Requirements (CLOCK PHASE = 1, SPICLK = output, SPISIMO = output, and SPISOMI = input)
        3. 5.10.3.3 SPI Slave Mode I/O Timings
          1. Table 5-12 SPI Slave Mode Switching Parameters (SPICLK = input, SPISIMO = input, and SPISOMI = output)
          2. Table 5-13 SPI Slave Mode Timing Requirements (SPICLK = input, SPISIMO = input, and SPISOMI = output)
        4. 5.10.3.4 Typical Interface Protocol Diagram (Slave Mode)
      4. 5.10.4  LVDS Interface Configuration
        1. 5.10.4.1 LVDS Interface Timings
      5. 5.10.5  General-Purpose Input/Output
        1. Table 5-15 Switching Characteristics for Output Timing versus Load Capacitance (CL)
      6. 5.10.6  Controller Area Network Interface (DCAN)
        1. Table 5-16 Dynamic Characteristics for the DCANx TX and RX Pins
      7. 5.10.7  Serial Communication Interface (SCI)
        1. Table 5-17 SCI Timing Requirements
      8. 5.10.8  Inter-Integrated Circuit Interface (I2C)
        1. Table 5-18 I2C Timing Requirements
      9. 5.10.9  Quad Serial Peripheral Interface (QSPI)
        1. Table 5-19 QSPI Timing Conditions
        2. Table 5-20 Timing Requirements for QSPI Input (Read) Timings
        3. Table 5-21 QSPI Switching Characteristics
      10. 5.10.10 ETM Trace Interface
        1. Table 5-22 ETMTRACE Timing Conditions
        2. Table 5-23 ETM TRACE Switching Characteristics
      11. 5.10.11 Data Modification Module (DMM)
        1. Table 5-24 DMM Timing Requirements
      12. 5.10.12 JTAG Interface
        1. Table 5-25 JTAG Timing Conditions
        2. Table 5-26 Timing Requirements for IEEE 1149.1 JTAG
        3. Table 5-27 Switching Characteristics Over Recommended Operating Conditions for IEEE 1149.1 JTAG
  6. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Subsystems
      1. 6.3.1 RF and Analog Subsystem
        1. 6.3.1.1 Clock Subsystem
        2. 6.3.1.2 Transmit Subsystem
        3. 6.3.1.3 Receive Subsystem
      2. 6.3.2 Processor Subsystem
      3. 6.3.3 Host Interface
      4. 6.3.4 Master Subsystem Cortex-R4F Memory Map
      5. 6.3.5 DSP Subsystem Memory Map
    4. 6.4 Other Subsystems
      1. 6.4.1 ADC Channels (Service) for User Application
        1. Table 6-3 GP-ADC Parameter
  7. 7 Monitoring and Diagnostics
    1. 7.1 Monitoring and Diagnostic Mechanisms
      1. 7.1.1 Error Signaling Module
  8. 8 Applications, Implementation, and Layout
    1. 8.1 Application Information
    2. 8.2 Reference Schematic
    3. 8.3 Layout
      1. 8.3.1 Layout Guidelines
      2. 8.3.2 Layout Example
      3. 8.3.3 Stackup Details
  9. 9 Device and Documentation Support
    1. 9.1 Device Nomenclature
    2. 9.2 Tools and Software
    3. 9.3 Documentation Support
    4. 9.4 Community Resources
    5. 9.5 商標
    6. 9.6 静電気放電に関する注意事項
    7. 9.7 Export Control Notice
    8. 9.8 Glossary
  10. 10Mechanical, Packaging, and Orderable Information
    1. 10.1 Packaging Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

5.10.2.1 Clock Specifications

The IWR1642 requires external clock source (that is, a 40-MHz crystal or external oscillator to CLKP) for initial boot and as a reference for an internal APLL hosted in the device. An external crystal is connected to the device pins. Figure 5-3 shows the crystal implementation.

IWR1642 crystal_implementation_IWR16.gifFigure 5-3 Crystal Implementation

NOTE

The load capacitors, Cf1 and Cf2 in Figure 5-3, should be chosen such that Equation 1 is satisfied. CL in the equation is the load specified by the crystal manufacturer. All discrete components used to implement the oscillator circuit should be placed as close as possible to the associated oscillator CLKP and CLKM pins.
Equation 1. IWR1642 equation_1.gif

Table 5-5 lists the electrical characteristics of the clock crystal.

Table 5-5 Crystal Electrical Characteristics (Oscillator Mode)

NAME DESCRIPTION MIN TYP MAX UNIT
fP Parallel resonance crystal frequency 40 MHz
CL Crystal load capacitance 5 8 12 pF
ESR Crystal ESR 50 Ω
Temperature range Expected temperature range of operation –40 105 ºC
Frequency tolerance Crystal frequency tolerance(1)(2)(3) –50 50 ppm
Drive level 50 200 µW
(1) The crystal manufacturer's specification must satisfy this requirement.
(2) Includes initial tolerance of the crystal, drift over temperature, aging and frequency pulling due to incorrect load capacitance.
(3) Crystal tolerance affects radar sensor accuracy.

In the case where an external clock is used as the clock resource, the signal is fed to the CLKP pin only; CLKM is grounded. The phase noise requirement is very important when a 40-MHz clock is fed externally. Table 5-6 lists the electrical characteristics of the external clock signal.

Table 5-6 External Clock Mode Specifications

PARAMETER SPECIFICATION UNIT
MIN TYP MAX
Input Clock:
External AC-coupled sine wave or DC-coupled square wave
Phase Noise referred to 40MHz (80GHz) 		Frequency 40 MHz
AC-Amplitude 700 1200 mV (pp)
DC-Vil 0.00 0.20 V
DC-Vih 1.6 1.95 V
Phase Noise at 1 kHz –132 dBc/Hz
Phase Noise at 10 kHz –143 dBc/Hz
Phase Noise at 100 kHz –152 dBc/Hz
Phase Noise at 1 MHz –153 dBc/Hz
Duty Cycle 35 65 %
Freq Tolerance –50 50 ppm
Freq Tolerance –50 50 ppm