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| author | Javier Valenzuela <javier.valenzuela@ni.com> | 2022-02-16 22:06:33 -0600 |
|---|---|---|
| committer | Wade Fife <wade.fife@ettus.com> | 2022-03-04 09:41:24 -0600 |
| commit | adb352a2ad81d7c6d70ec5880a787b6bab7d19ba (patch) | |
| tree | 83e1362eb58567246d150ff6ebbd99ebf66c3627 | |
| parent | ad054cd3ef9276296818070e35ff83a48d9ca023 (diff) | |
| download | uhd-adb352a2ad81d7c6d70ec5880a787b6bab7d19ba.tar.gz uhd-adb352a2ad81d7c6d70ec5880a787b6bab7d19ba.tar.bz2 uhd-adb352a2ad81d7c6d70ec5880a787b6bab7d19ba.zip | |
fpga: x400: Adjust SPI engine strobes alignment
Modify behavior of clock crossing between radio_clk and radio_clk_2x.
This ensures strobe signals are always asserted for a single
radio_clk_2x cycle and when radio_clk is low.
| -rw-r--r-- | fpga/usrp3/top/x400/doc/X4XX_FPGA_right.htm | 4 | ||||
| -rw-r--r-- | fpga/usrp3/top/x400/regmap/versioning_regs_regmap_utils.vh | 2 | ||||
| -rw-r--r-- | fpga/usrp3/top/x400/x4xx.v | 2 | ||||
| -rw-r--r-- | fpga/usrp3/top/x400/x4xx_gpio_spi.v | 15 |
4 files changed, 14 insertions, 9 deletions
diff --git a/fpga/usrp3/top/x400/doc/X4XX_FPGA_right.htm b/fpga/usrp3/top/x400/doc/X4XX_FPGA_right.htm index b7495d673..0d8ec1cb1 100644 --- a/fpga/usrp3/top/x400/doc/X4XX_FPGA_right.htm +++ b/fpga/usrp3/top/x400/doc/X4XX_FPGA_right.htm @@ -24131,9 +24131,9 @@ FPGA version.<BR/> <tr valign="top"> - <td class='value'>570500626</td> + <td class='value'>570565649</td> - <td class='l'>0x22012612</td> + <td class='l'>0x22022411</td> <td class="l" style="text-align: left;"> <p class="name"><a name='VERSIONING_REGS_REGMAP|FPGA_VERSION|FPGA_VERSION_LAST_MODIFIED_TIME'></a>FPGA_VERSION_LAST_MODIFIED_TIME</p> diff --git a/fpga/usrp3/top/x400/regmap/versioning_regs_regmap_utils.vh b/fpga/usrp3/top/x400/regmap/versioning_regs_regmap_utils.vh index 9d9eb397e..8928f06f3 100644 --- a/fpga/usrp3/top/x400/regmap/versioning_regs_regmap_utils.vh +++ b/fpga/usrp3/top/x400/regmap/versioning_regs_regmap_utils.vh @@ -85,7 +85,7 @@ localparam FPGA_CURRENT_VERSION_MINOR = 'h6; // FPGA_VERSION:FPGA_CURRENT_VERSION_MINOR localparam FPGA_CURRENT_VERSION_MAJOR = 'h7; // FPGA_VERSION:FPGA_CURRENT_VERSION_MAJOR localparam FPGA_OLDEST_COMPATIBLE_VERSION_MAJOR = 'h7; // FPGA_VERSION:FPGA_OLDEST_COMPATIBLE_VERSION_MAJOR - localparam FPGA_VERSION_LAST_MODIFIED_TIME = 'h22012612; // FPGA_VERSION:FPGA_VERSION_LAST_MODIFIED_TIME + localparam FPGA_VERSION_LAST_MODIFIED_TIME = 'h22022411; // FPGA_VERSION:FPGA_VERSION_LAST_MODIFIED_TIME // Enumerated type RF_CORE_100M_VERSION localparam RF_CORE_100M_VERSION_SIZE = 7; diff --git a/fpga/usrp3/top/x400/x4xx.v b/fpga/usrp3/top/x400/x4xx.v index 5c05b9eb9..c16f551d5 100644 --- a/fpga/usrp3/top/x400/x4xx.v +++ b/fpga/usrp3/top/x400/x4xx.v @@ -2289,7 +2289,7 @@ endmodule // <value name="FPGA_OLDEST_COMPATIBLE_VERSION_MAJOR" integer="7"/> // <value name="FPGA_OLDEST_COMPATIBLE_VERSION_MINOR" integer="0"/> // <value name="FPGA_OLDEST_COMPATIBLE_VERSION_BUILD" integer="0"/> -// <value name="FPGA_VERSION_LAST_MODIFIED_TIME" integer="0x22012612"/> +// <value name="FPGA_VERSION_LAST_MODIFIED_TIME" integer="0x22022411"/> // </enumeratedtype> // </group> //</regmap> diff --git a/fpga/usrp3/top/x400/x4xx_gpio_spi.v b/fpga/usrp3/top/x400/x4xx_gpio_spi.v index b5866f867..a037ae158 100644 --- a/fpga/usrp3/top/x400/x4xx_gpio_spi.v +++ b/fpga/usrp3/top/x400/x4xx_gpio_spi.v @@ -342,13 +342,18 @@ module x4xx_gpio_spi #( // Register set_stb for use in 2x domain. reg set_stb_2x = 1'b0; - reg ctrlport_clk_phase = 1'b0; + reg ctrlport_clk_phase = 1'b1; always @ (posedge ctrlport_clk_2x) begin - // Assert strobe only during a single 2x cycle of the - // 1x pulse. - set_stb_2x <= ctrlport_clk_phase & set_stb; - ctrlport_clk_phase <= ~ctrlport_clk_phase; + if (ctrlport_rst) begin + ctrlport_clk_phase <= 1'b1; + set_stb_2x <= 1'b0; + end else begin + // Assert strobe only during a single 2x cycle of the + // 1x pulse, when 1x clock is low. + set_stb_2x <= ctrlport_clk_phase & set_stb; + ctrlport_clk_phase <= ~ctrlport_clk_phase; + end end simple_spi_core #( |