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programmable-logic:arty-s7:reference-manual [2022/01/26 16:17] – [Board Revisions] Arthur Brownprogrammable-logic:arty-s7:reference-manual [2022/10/04 04:38] (current) – external edit 127.0.0.1
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 ====== Board Revisions ====== ====== Board Revisions ======
  
-Since the release of the Arty S7-50, several changes have been made to its design to ease the manufacturing of Arty S7-25 and S7-50 variants. At the time of writing, a purchased Arty S7-50 may arrive in the form of either a Revision C or a Revision E of the board. These revisions have no substantial difference in capabilities, however there several design differences that are described in this manual. The revision of each board is printed on the underside of the board, near the white bar-code sticker, as seen in the figure below.+Since the release of the Arty S7-50, several changes have been made to its design to ease the manufacturing of Arty S7-25 and S7-50 variants. At the time of writing, a purchased Arty S7-50 may arrive in the form of either a Revision C or a Revision E of the board. These revisions have no difference in capabilities, however there several design differences that are described in this manual. The revision of each board is printed on the underside of the board, near the white bar-code sticker, as seen in the figure below.
  
 {{ :reference:programmable-logic:arty-s7:arty-s7-bottom-rev.png?500 |}} {{ :reference:programmable-logic:arty-s7:arty-s7-bottom-rev.png?500 |}}
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 **Note:** //Refer to the manufacturer’s data sheets[([[https://www.infineon.com/dgdl/Infineon-S25FL128S_S25FL256S_128_Mb_(16_MB)_256_Mb_(32_MB)_3.0V_SPI_Flash_Memory-DataSheet-v18_00-EN.pdf?fileId=8ac78c8c7d0d8da4017d0ecfb6a64a17&utm_source=cypress&utm_medium=referral&utm_campaign=202110_globe_en_all_integration-files|Spansion S25FL128S Datasheet]] **Note:** //Refer to the manufacturer’s data sheets[([[https://www.infineon.com/dgdl/Infineon-S25FL128S_S25FL256S_128_Mb_(16_MB)_256_Mb_(32_MB)_3.0V_SPI_Flash_Memory-DataSheet-v18_00-EN.pdf?fileId=8ac78c8c7d0d8da4017d0ecfb6a64a17&utm_source=cypress&utm_medium=referral&utm_campaign=202110_globe_en_all_integration-files|Spansion S25FL128S Datasheet]]
-[[https://www.infineon.com/dgdl/Infineon-S25FL127S_128-Mb_(16_MB)_3.0_V_SPI_Flash_Memory-DataSheet-v11_00-EN.pdf?fileId=8ac78c8c7d0d8da4017d0ecfa58c49f7&utm_source=cypress&utm_medium=referral&utm_campaign=202110_globe_en_all_integration-datasheet|Spansion S25FL127S Datasheet]])] ​ and Xilinx user guides[([[http://www.xilinx.com/support/documentation/user_guides/ug470_7Series_Config.pdf|7-Series FPGAs Configuration User Guide from Xilinx]])] ​ for more information.//+[[https://www.infineon.com/dgdl/Infineon-S25FL127S_128-Mb_(16_MB)_3.0_V_SPI_Flash_Memory-DataSheet-v11_00-EN.pdf?fileId=8ac78c8c7d0d8da4017d0ecfa58c49f7&utm_source=cypress&utm_medium=referral&utm_campaign=202110_globe_en_all_integration-datasheet|Spansion S25FL127S Datasheet]])] ​ and Xilinx user guides[([[https://docs.xilinx.com/v/u/en-US/ug470_7Series_Config|7-Series FPGAs Configuration User Guide from Xilinx]])] ​ for more information.//
  
 {{ :reference:programmable-logic:arty-s7:arty-s7-flash.png?550 |Figure 4.1. Arty S7 Quad SPI flash.}} {{ :reference:programmable-logic:arty-s7:arty-s7-flash.png?550 |Figure 4.1. Arty S7 Quad SPI flash.}}
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 //Table 9.1.1. Shield Voltage Specifications// //Table 9.1.1. Shield Voltage Specifications//
  
-For more information on the electrical characteristics of the pins connected to the FPGA, please see the [[https://www.xilinx.com/support/documentation/data_sheets/ds189-spartan-7-data-sheet.pdf|Spartan-7 datasheet]] from Xilinx.+For more information on the electrical characteristics of the pins connected to the FPGA, please see the [[https://docs.xilinx.com/v/u/en-US/ds189-spartan-7-data-sheet|Spartan-7 datasheet]] from Xilinx.
  
 The pins on the shield connector typically used for I2C signals are labeled as SCL and SDA. When using these signals to implement an I2C bus it is necessary to attach a pull-up resistor to them. On the Arty S7, this can be done by placing two shorting blocks horizontally across the J4 header. The pins on the shield connector typically used for I2C signals are labeled as SCL and SDA. When using these signals to implement an I2C bus it is necessary to attach a pull-up resistor to them. On the Arty S7, this can be done by placing two shorting blocks horizontally across the J4 header.