SNLU254A November   2020  – July 2022 DS160PT801

 

  1.   Abstract
  2.   Trademarks
  3. 1EVM Control and Configuration Information
    1. 1.1 Retimer Pin Controls
    2. 1.2 USB-to-SMBus Interface
    3. 1.3 PCIe PRSNT# Signal Control and Configuration
    4. 1.4 PCIe Reference Clock Control and Configuration
  4. 2EVM Power
    1. 2.1 EVM Current Sensing
  5. 3SigCon Architect GUI
    1. 3.1 Setup and Installation
    2. 3.2 Configuration Page
    3. 3.3 Low-Level Page
    4. 3.4 EEPROM Page
    5. 3.5 Control Panel
    6. 3.6 High-Level Page
    7. 3.7 Diagnostic Page
    8. 3.8 Eye Monitor Page
  6. 4PCB Material Information
    1. 4.1 DS160PT801 PCB Design
    2. 4.2 DS160PT801 PCB Stackup
    3. 4.3 DS160PT801 PCB Power Distribution
    4. 4.4 DS160PT801 Local Decoupling
  7. 5DS160PT801X16EVM Schematic
  8. 6Hardware BOM
  9. 7Revision History

1.2 USB-to-SMBus Interface

The DS160PT801X16EVM uses an onboard MSP430 microcontroller to create USB-to-SMBus interface. The USB-to-SMBus interface is intended to be used with Texas Instruments software like SigCon Architect to communicate to the DS160PT801 retimers.

When using the default jumper configuration listed in Table 1-1, the DS160PT801 at location U2 is setup for SMBus address 0x20 (8-bit address). The DS160PT801 at location U3 is setup for SMBus address 0x22. The retimers can also be configured to other SMBus address combinations.

Figure 1-2 shows the locations of the SMBus address headers used to modify the default SMBus addresses for the retimers. For more information on valid SMBus addresses, please refer to the DS160PT801 data sheet.


GUID-20201025-CA0I-QHDJ-JCPD-WLZS5GDW161K-low.png

Figure 1-2 DS160PT801X16EVM SMBus Interface Connections

To access the DS160PT801 devices through this interface, power must be applied through the SATA or Gold Finger connectors.