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| Datasheet |
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| Table 2.5 USB Pins |
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| BUFFER |
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NUM PINS | NAME | SYMBOL | TYPE |
| DESCRIPTION |
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| USB | USBDM | AIO | USB DMINUS | |
1 | DMINUS |
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| Note: | The functionality of this pin may be |
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| swapped to USB DPLUS via the | |
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| PORT_SWAP configuration strap. |
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| USB | USBDP | AIO | USB DPLUS | |
1 | DPLUS |
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| Note: | The functionality of this pin may be |
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| swapped to USB DMINUS via the | |
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| PORT_SWAP configuration strap. |
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| External USB | USBRBIAS | AI | External USB Bias Resistor: Used for setting | |
1 | Bias Resistor. |
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| HS transmit current level and | |
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| impedance. Connect to an external 12K 1.0% | ||
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| resistor to ground. | |
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| USB PLL | VDD18USBPLL | P | USB PLL +1.8V Supply: This pin must be | |
1 | +1.8V Supply |
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| connected to VDD18CORE for proper operation. | |
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| Refer to the LAN9500/LAN9500i reference | ||
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| schematic for additional connection information. | |
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| Crystal Input | XI | ICLK | Crystal Input: External 25 MHz crystal input. | |
1 |
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| Note: | This signal can also be driven by a |
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| method is used, XO should be left |
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| unconnected |
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1 | Crystal | XO | OCLK | Crystal Output: External 25 MHz crystal output. | |
Output |
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| Table 2.6 Ethernet PHY Pins |
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| BUFFER |
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NUM PINS | NAME | SYMBOL | TYPE |
| DESCRIPTION |
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| Ethernet TX | TXN | AIO | Ethernet Transmit Data Out Negative: The | |
1 | Data Out |
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| transmit data outputs may be swapped internally | |
Negative |
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| with receive data inputs when | ||
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| enabled. |
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| Ethernet TX | TXP | AIO | Ethernet Transmit Data Out Positive: The | |
1 | Data Out |
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| transmit data outputs may be swapped internally | |
Positive |
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| with receive data inputs when | ||
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| enabled. |
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| Ethernet RX | RXN | AIO | Ethernet Receive Data In Negative: The | |
1 | Data In |
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| receive data inputs may be swapped internally | |
Negative |
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| with transmit data outputs when | ||
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| enabled. |
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| Ethernet RX | RXP | AIO | Ethernet Receive Data In Positive: The receive | |
1 | Data In |
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| data inputs may be swapped internally with | |
Positive |
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| transmit data outputs when | ||
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| enabled. |
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Revision 1.7 | 16 | SMSC LAN9500/LAN9500i |
| DATASHEET |
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