Board/NWI/NWI1199-DAT/42-44-18-24-04-2023.png
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Board/NWI/NWI1199-DAT/NWI1199-DAT.md
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+
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+# NWI1199 DAT
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+
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+- [[LAN8720-DAT]]
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+
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+
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+![](42-44-18-24-04-2023.png)
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+
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+| ESP32 | func | Ethernet | Note |
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+| ------- | ----------- | ----------------- | ---- |
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+| GPIO 17 | PHY_POWER | Osc_PWR (PHY_pwr) | |
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+| GPIO 22 | EMAC_TXD1 | TX1 | |
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+| GPIO 19 | EMAC_TXD0 | TX0 | |
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+| GPIO 21 | EMAC_TX_EN | TX_EN | |
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+| GPIO 26 | EMAC_RXD1 | RX1 | |
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+| GPIO 25 | EMAC_RXD0 | RX0 | |
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+| GPIO 27 | EMAC_RX_DV | CRS | |
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+| GPIO 00 | EMAC_TX_CLK | nINT/REFCLK | |
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+| GPIO 23 | SMI_MDC | MDC | |
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+| GPIO 18 | SMI_MDIO | MDIO | |
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+| GND | | GND | |
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+| 3V3 | | VCC | |
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+
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+
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+### IO 17 -- Osc_PWR (PHY_pwr)
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+3-way jumper
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+- NC (Not connect)
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+- connect
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+2-way jumper
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+- Add pull down 4.7K
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+
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+### IO0 -- CLK
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+2-way jumper (left)
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+- 4k7 pull up
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+2-way jumper (right)
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+- connect
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+
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+### Crystal
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+- active 50MHz
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+
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+
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+## ref
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+- https://sautter.com/blog/ethernet-on-esp32-using-lan8720/
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Chip/Microchip/LAN8720-DAT.md
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+# LAN8720 DAT
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+- https://ww1.microchip.com/downloads/en/devicedoc/00002165b.pdf
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+
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+- [[LAN8720]]
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