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| <section id="bouffalo-lab-bl808"> |
| <h1>Bouffalo Lab BL808<a class="headerlink" href="#bouffalo-lab-bl808" title="Permalink to this heading"></a></h1> |
| <p><a class="reference external" href="https://github.com/bouffalolab/bl_docs/tree/main/BL808_RM/en">Bouffalo Lab BL808</a> is a 64-bit / 32-bit RISC-V SoC with 3 RISC-V Cores:</p> |
| <ul class="simple"> |
| <li><dl class="simple"> |
| <dt><strong>D0 Multimedia Core:</strong> T-Head C906 480 MHz 64-bit RISC-V CPU</dt><dd><ul> |
| <li><p>RV64IMAFCV</p></li> |
| <li><p>Level 1 Instruction and Data Cache (Harvard architecture)</p></li> |
| <li><p>Sv39 Memory Management Unit</p></li> |
| <li><p>jTLB (128 entries)</p></li> |
| <li><p>AXI 4.0 128-bit master interface</p></li> |
| <li><p>Core Local Interrupt (CLINT) and Platform-Level Interrupt Controller (PLIC)</p></li> |
| <li><p>80 External Interrupt Sources</p></li> |
| <li><p>BHT (8K) and BTB</p></li> |
| <li><p>RISC-V PMP (8 configurable areas)</p></li> |
| </ul> |
| </dd> |
| </dl> |
| </li> |
| <li><dl class="simple"> |
| <dt><strong>M0 Wireless Core:</strong> T-Head E907 320 MHz 32-bit RISC-V CPU</dt><dd><ul> |
| <li><p>RV32IMAFCP</p></li> |
| <li><p>32-bit / 16-bit Mixed Instruction Set</p></li> |
| <li><p>RISC-V Machine Mode and User Mode</p></li> |
| <li><p>32 x 32-bit Integer General Purpose Registers (GPR)</p></li> |
| <li><p>32 x 32-bit / 64-bit Floating-Point GPRs</p></li> |
| <li><p>AXI 4.0 main device interface and AHB 5.0 peripheral interface</p></li> |
| <li><p>Instruction and Data Cache</p></li> |
| </ul> |
| </dd> |
| </dl> |
| </li> |
| <li><dl class="simple"> |
| <dt><strong>LP Low Power Core:</strong> T-Head E902 150 MHz 32-bit RISC-V CPU</dt><dd><ul> |
| <li><p>RV32E[M]C</p></li> |
| </ul> |
| </dd> |
| </dl> |
| </li> |
| <li><p><strong>RAM:</strong> Embedded 64 MB PSRAM</p></li> |
| <li><p><strong>Wireless:</strong> 2.4 GHz 1T1R WiFi 802.11 b/g/n, Bluetooth 5.2, Zigbee</p></li> |
| <li><p><strong>Ethernet:</strong> 10 / 100 Mbps</p></li> |
| <li><p><strong>USB:</strong> USB 2.0 OTG</p></li> |
| <li><p><strong>Audio:</strong> Microphone and Speaker</p></li> |
| <li><p><strong>Video Input:</strong> Dual-lane MIPI CSI</p></li> |
| <li><p><strong>Peripherals:</strong> UART, SPI, I2C, PWM, SDH, EMAC, USB</p></li> |
| </ul> |
| <section id="peripheral-support"> |
| <h2>Peripheral Support<a class="headerlink" href="#peripheral-support" title="Permalink to this heading"></a></h2> |
| <p>The following list indicates the state of peripherals’ support in NuttX:</p> |
| <table class="docutils align-default"> |
| <thead> |
| <tr class="row-odd"><th class="head"><p>Peripheral</p></th> |
| <th class="head"><p>Support</p></th> |
| <th class="head"><p>NOTES</p></th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="row-even"><td><p>GPDAC</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>DMA</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>EMAC</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>GPADC</p></td> |
| <td><p>Yes</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>GPIO</p></td> |
| <td><p>Yes</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>I2C</p></td> |
| <td><p>Yes</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>I2S</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>PWM</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>SPI</p></td> |
| <td><p>Yes</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>Timers</p></td> |
| <td><p>Yes</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>UART</p></td> |
| <td><p>Yes</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>USB</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>Watchdogs</p></td> |
| <td><p>Yes</p></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| </section> |
| <section id="supported-boards"> |
| <h2>Supported Boards<a class="headerlink" href="#supported-boards" title="Permalink to this heading"></a></h2> |
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