Industrial Temperature Rated USB 2.0
Datasheet
Table 3.1 USB2514 Pin Descriptions (continued)
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SYMBOL | 36 QFN | 48 QFN | TYPE | DESCRIPTION |
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LED_A[3:1]_N/ | n/a | 23 | I/O12 | Port LED Indicators & Port Swap strapping option |
PRT_SWP[3:1] |
| 25 |
| Indicator LED for ports |
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| 37 |
| |
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| support is enabled via EEPROM or SMBus. |
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| If this strap is enabled by package and configuration |
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| settings (see Table 3.2), this pin will be sampled at |
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| RESET_N negation to determine the electrical |
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| connection polarity of the downstream USB Port pins |
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| (USB_DP and USB_DM). |
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| Also, the active state of the LED will be determined as |
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| follows: |
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| ‘0’ = Port Polarity is normal, and the LED is active high. |
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| ‘1’ = Port Polarity (for USB_DP and USB_DM) is |
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| swapped, and the LED is active low. |
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LED_B3_N/ | n/a | 22 | I/O12 | Enhanced Port 3 LED & Gang Power and Overcurrent |
GANG_EN |
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| Strap Option |
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| Enhanced Indicator LED for port 3. Will be active low |
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| when LED support is enabled via EEPROM or SMBus. |
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| GANG_EN: Selects between Gang or Individual Port |
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| power and Over Current sensing. |
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| If this strap is enabled by package and configuration |
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| settings (see Table 3.2), this pin will be sampled at |
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| RESET_N negation to determine the mode as follows: |
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| ‘0’ = Individual sensing & switching, and LED_B3_N is |
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| active high. |
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| ‘1’ = Ganged sensing & switching, and LED_B3_N is |
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| active low. |
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LED_B[2:1]_N/ | n/a | 24 | I/O12 | Enhanced Port [2:1] LED & Phy Boost strapping option |
BOOST[1:0] |
| 36 |
| Enhanced Indicator LED for ports 1 & 2. Will be active |
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| low when LED support is enabled via EEPROM or |
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| SMBus. |
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Revision 1.98 | 10 | SMSC USB2513i |
| DATASHEET |
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