![](/images/new-backgrounds/1266639/26663945x1.webp)
Your ePlatform Partner
User’s Manual for Advantech
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| doesn’t need UART2 function, user | 100Kohm |
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| could use this pin as GPIO. The |
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| pin connects to SoC PXA255 |
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| GPIO42. |
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115 | UART3_RTS | O | UART3 | Pull high with |
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| pin. | 100Kohm |
116 | UART2_CTS | I | UART2 | Pull high with |
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| user doesn’t need UART2 function, | 100Kohm |
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| user could use this pin as GPIO. |
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| The pin connects to SoC PXA255 |
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| GPIO44. |
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117 | UART3_TXD | O | UART3 Transmit signal pin. If user | Pull high with |
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| doesn’t need UART3 function, user | 100Kohm |
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| could use this pin as GPIO. The |
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| pin connects to SoC PXA255 |
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| GPIO47. |
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118 | UART2_DTR | O | UART | Pull high with |
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| pin. | 100Kohm |
119 | UART3_CTS | I | UART3 | Pull high with |
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| 100Kohm |
120 | UART2_RI | I | UART2 Ring Indicator signal pin. | Pull high with |
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| 100Kohm |
121 | UART3_DTR | O | UART3 | Pull high with |
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| signal pin. | 100Kohm |
122 | UART3_RI | I | UART3 Ring Indicator signal pin. | Pull high with |
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| 100Kohm |
123 | UART1_DSR | I | UART1 | Pull high with |
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| 100Kohm |
124 | UART1_DCD | I | UART1 | Pull high with |
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| pin. | 100Kohm |
125 | UART1_CTS | I | UART1 | Pull high with |
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| 100Kohm |
126 | UART1_RXD | I | UART1 Receive signal pin. | Pull high with |
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| 100Kohm |
127 | UART1_RTS | O | UART1 | Pull high with |
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| pin. | 100Kohm |
128 | UART1_TXD | O | UART1 Transmit signal pin. | Pull high with |
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| 100Kohm |
129 | UART1_DTR | O | UART1 | Pull high with |
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| signal pin. | 100Kohm |
130 | GND | P | Ground | - |
131 | UART1_RI | I | UART Ring Indicator signal pin. | Pull high with |
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| 100Kohm |
132 | TX- | O | 10/100 | No pulling |
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| negative pin. |
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133 | nLINK_LED | O | Link LED & Activity LED. | Pull high with |
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| Active states indicate the good link | 10Kohm |
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| for 10Mbps and 100Mbps |
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| operations. It is also an active LED |
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