DS160PT801X16EVM Riser Card Evaluation Module
Abstract
The DS160PT801X16EVM is a 16-lane PCIe riser card board intended to be used for evaluation of the Texas Instruments DS160PT801 PCIe Gen4 retimer. The EVM uses the 1x16 Card Electromechanical (CEM) connector to enable quick system testing in a standard x16 socket and a standard PCIe endpoint. The evaluation board may be used with the SigCon Architect software program to provide register control and status information from the DS160PT801 devices. Contact a local Texas Instruments representative to obtain the SigCon Architect.
Figure 1-1 DS160PT801 EVMTrademarks
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1 EVM Control and Configuration Information
The DS160PT801X16 EVM uses an AT24C16 EEPROM to store retimer configuration settings. This EEPROM is pre-loaded with an EEPROM image with various settings to enable quick system bring-up for common-clock PCIe topologies.
Custom EEPROM images for compliance or separate reference independent spread (SRIS) clock topologies may be created and written to the EEPROM using the SigCon Architect software or by using the DS160PT801 I2C interface. For additional information on EEPROM programming through the I2C interface of the DS160PT801, please refer to the DS160PT801 EEPROM Programming Guide.(1)
Figure 1-1 DS160PT801X16EVM EEPROM
Control and ConnectionThe EE-PT801 connect headers (J21 and J24) allow for quick connection or disconnection of the EEPROM serial interface. Additional test access points are provided at header J23 to allow the user to monitor EEPROM activity. The J25 header may be used to Write Protect the EEPROM and prevent any changes to the current EEPROM image. When the EEPROM is disconnected, the retimer will completely rely on the pin-strap settings for configuration, which may be modified using the shunt jumpers included with the EVM.
