Advantech RISC Module SOM-A2552 - Manual (Page 22)

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User’s Manual for Advantech SOM-A2552 series module V1.00
22
116 UART2_CTS I UART2 Clear-to-Send signal pin. If
user doesn’t need UART2 function,
user could use this pin as GPIO.
The pin connects to SoC PXA255
GPIO44.
Pull high with
100Kohm
117 UART3_TXD O UART3 Transmit signal pin. If user
doesn’t need UART3 function, user
could use this pin as GPIO. The
pin connects to SoC PXA255
GPIO47.
Pull high with
100Kohm
118 UART2_DTR O UART Data-Terminal-Ready signal
pin.
Pull high with
100Kohm
119 UART3_CTS I UART3 Clear-to-Send signal pin. Pull high with
100Kohm
120 UART2_RI I UART2 Ring Indicator signal pin. Pull high with
100Kohm
121 UART3_DTR O UART3 Data-Terminal-Ready
signal pin.
Pull high with
100Kohm
122 UART3_RI I UART3 Ring Indicator signal pin. Pull high with
100Kohm
123 UART1_DSR I UART1 Data-Set-Ready signal pin. Pull high with
100Kohm
124 UART1_DCD I UART1 Data-Carrier-Detect signal
pin.
Pull high with
100Kohm
125 UART1_CTS I UART1 Clear-to-Send signal pin. Pull high with
100Kohm
126 UART1_RXD I UART1 Receive signal pin. Pull high with
100Kohm
127 UART1_RTS O UART1 Request-to-Send signal
pin.
Pull high with
100Kohm
128 UART1_TXD O UART1 Transmit signal pin. Pull high with
100Kohm
129 UART1_DTR O UART1 Data-Terminal-Ready
signal pin.
Pull high with
100Kohm
130 GND P Ground -
131 UART1_RI I UART Ring Indicator signal pin. Pull high with
100Kohm
132 N.C. - N.C. just float this pin. -
133 N.C. - N.C. just float this pin. -
134 N.C. - N.C. just float this pin. -
135 N.C. - N.C. just float this pin. -
136 GND P Ground -
137 VDD_ENA O LCD power control signal. User
can use this pin to control the LCD
logic power MOS switch to achieve
power-saving.
No pulling
138 N.C. - N.C. just float this pin. -
139 VEE_ENA O STN LCD VEE power control
signal. User can use this pin to
No pulling