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User’s Manual for Advantech SOM-A2558 series module V1.00
23
doesn’t need UART2 function, user
could use this pin as GPIO. The
pin connects to SoC PXA255
GPIO42.
100Kohm
115
UART3_RTS O
UART3 Request-to-Send signal
pin.
Pull high with
100Kohm
116
UART2_CTS I UART2 Clear-to-Send s
ignal 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
TX- O
10/100 BASE-T transmit Data
negative pin.
No pulling
133
nLINK_LED O
Link LED & Activity LED.
Active states indicate the good link
for 10Mbps and 100Mbps
operations. It is also an active LED
Pull high
with
10Kohm