SPRACR2 March   2020 TMS320F280021 , TMS320F280021-Q1 , TMS320F280023 , TMS320F280023-Q1 , TMS320F280023C , TMS320F280025 , TMS320F280025-Q1 , TMS320F280025C , TMS320F280025C-Q1

 

  1.   Enabling Peripheral Expansion Applications Using the HIC
    1.     Trademarks
    2. 1 Introduction
    3. 2 HIC Configurations Overview
      1. 2.1 Access Modes
      2. 2.2 Data Width Selection
      3. 2.3 Base Address Selection
      4. 2.4 Read/write I/O Configuration
      5. 2.5 Device to Host Interrupts
        1. 2.5.1 Device Internal Events
        2. 2.5.2 Software Interrupts
    4. 3 Hardware Considerations
      1. 3.1 Common Signal Names
      2. 3.2 Address Pin Mapping
      3. 3.3 BASESEL Pin Mapping
    5. 4 Example Configuration for Pin Constrained Applications
      1. 4.1 Test Setup
      2. 4.2 Test Description
    6. 5 Example Configuration for Performance-Critical Applications
      1. 5.1 Test Setup
      2. 5.2 Test Description
    7. 6 Handling Device Reset and Low-Power Conditions
    8. 7 References
  2.   A Address Translation for Different Data Width Modes
    1.     A.1 Base Address and Offset Address Configuration

5.1 Test Setup

Table 7 captures the HIC and EMIF configuration used in the example. The total number of pins required for this configuration is 32.

Table 7. Device and Host Configurations for Performance-Critical applications

HIC Configuration EMIF Configuration
Access type: Direct access mode Access Type: Normal mode
Data width: 16-bit mode ASIZE: 16-bit data bus
Read/write: Dual pin
Pagesel type: Register selection

Figure 11 shows the hardware connections required for the example. The access type used in this example is direct access mode and hence the HIC_nRDY and HIC_BASEL0 pins are required to be connected. Also, the byte enables are connected to perform 8-bit accesses in the 16-bit data width mode. Note that dual pin read/write mode is chosen in the example to cover the variety of configurations and is not a mandate mode for higher performance.

spracr2-hardware-setup-for-the-example-hic-ex2-config-16-bit-fsi.gifFigure 11. Hardware Setup for the Example hic_ex2_config_16bit_fsi