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| USB Hub with Integrated 10/100 Ethernet Controller |
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| Datasheet |
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| Table 2.3 Miscellaneous Pins (continued) | |||
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| BUFFER |
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PINS | NAME | SYMBOL |
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1 | Test 2 | TEST2 |
| - | Used for factory testing, this pin must always be |
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| connected to VSS for proper operation. | |
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1 | Test 3 | TEST3 |
| - | Used for factory testing, this pin must always be |
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| connected to VDD33IO for proper operation. | |
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1 | 24 MHz Clock | CLK24_EN |
| IS | This pin enables the generation of the 24 MHz |
Enable |
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| clock on the CLK_24_OUT pin. | |
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1 | 24 MHz Clock | CLK24_OUT |
| 08 | This pin outputs a 24 MHz clock that can be used |
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| a reference clock for a partner hub. | |
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1 | Test 4 | TEST4 |
| - | Used for factory testing, this pin must always be left |
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| Table 2.4 USB Pins | ||
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PINS | NAME | SYMBOL |
| TYPE | DESCRIPTION |
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1 | Upstream | USBDM0 |
| AIO | Upstream USB DMINUS signal. |
USB DMINUS 0 |
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1 | Upstream | USBDP0 |
| AIO | Upstream USB DPLUS signal. |
USB |
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| DPLUS 0 |
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1 | Downstream | USBDM2 |
| AIO | Downstream USB peripheral 2 DMINUS signal. |
USB DMINUS 2 |
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1 | Downstream | USBDP2 |
| AIO | Downstream USB peripheral 2 DPLUS signal. |
USB DPLUS 2 |
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1 | Downstream | USBDM3 |
| AIO | Downstream USB peripheral 3 DMINUS signal. |
USB DMINUS 3 |
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1 | Downstream | USBDP3 |
| AIO | Downstream USB peripheral 3 DPLUS signal. |
USB DPLUS 3 |
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| USB Port Power | PRTCTL2 |
| IS/OD12 | When used as an output, this pin enables power to |
| Control 2 |
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| (PU) | downstream USB peripheral 2. |
1 |
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| When used as an input, this pin is used to sample |
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| the output signal from an external current monitor | |
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| for downstream USB peripheral 2. An overcurrent |
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| condition is indicated when the signal is low. |
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| Refer to Section 2.1 for additional information. |
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| USB Port Power | PRTCTL3 |
| IS/OD12 | When used as an output, this pin enables power to |
| Control 3 |
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| (PU) | downstream USB peripheral 3. |
1 |
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| When used as an input, this pin is used to sample |
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| the output signal from an external current monitor | |
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| for downstream USB peripheral 3. An overcurrent |
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| condition is indicated when the signal is low. |
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| Refer to Section 2.1 for additional information. |
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Revision 1.0 | 12 | SMSC LAN9512 |
| DATASHEET |
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