Advantech RISC Module SOM-A2552 - Manual (Page 23)

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User’s Manual for Advantech SOM-A2552 series module V1.00
23
control STN LCD VEE power MOS
switch to achieve power-saving.
140 N.C. - N.C. just float this pin. -
141 VBK_ENA O LCD back light inverter power
control signal. User can use this
pin to control the LCD backlight
inverter to achieve power-saving.
No pulling
142 USB_N1 IO USB host port1 D- data line. No pulling
143 N.C. - N.C. just float this pin. -
144 USB_P1 IO USB host port1 D+ data line. No pulling
145 N.C. - N.C. just float this pin. -
146 N.C. - N.C. just float this pin. -
147 N.C. - N.C. just float this pin. -
148 UART5_RXD I UART5 Receive signal pin. Pull high with
100Kohm
149 UART4_RXD I UART5 Receive signal pin. Pull high with
100Kohm
150 UART5_RTS O UART5 Data-Terminal-Ready
signal pin.
Pull high with
100Kohm
151 UART4_TXD O UART4 Transmit signal pin. Pull high with
100Kohm
152 UART5_TXD O UART5 Transmit signal pin. Pull high with
100Kohm
153 N.C. - N.C. just float this pin. -
154 N.C. - N.C. just float this pin. -
155 N.C. - N.C. just float this pin. -
156 N.C. - N.C. just float this pin. -
157 nVBRIR_INC O One of LCD inverter backlight
brightness control signals.
nVBRIR_INC is used to increase
or decrease Wiper Control.
Advantech suggests to connect the
pin to DS1804 1
st
pin.
No pulling
158 CRT_R AO The red CRT output. No pulling
159 nVBRIR_UnD O One of LCD inverter backlight
brightness control signals.
nVBRIR_UnD is used be Up/Down
Control. Advantech suggests to
connect the pin to DS1804 2
nd pin.
No pulling
160 CRT_G AO The Green CRT output. No pulling
161 VBRIR_CS O One of LCD inverter backlight
brightness control signals.
VBRIR_CS is used be chip select
pin. Advantech suggests to
connect the pin to DS1804 7
th
pin.
No pulling
162 CRT_B AO The blue CRT output. No pulling
163 nVCONR_INC O One of STN LCD contrast control
signals. nVCONR_INC is used be
increase/decrease Wiper Control
No pulling