Advantech RISC SOM-A2558 - Manual (Page 25)

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User’s Manual for Advantech SOM-A2558 series module V1.00
25
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 MSCLK IO PS/2 mouse clock Pull high with
10Kohm
154 KBDATA IO PS/2 keyboard data Pull high with
10Kohm
155 MSDATA IO PS/2 mouse data Pull high with
10Kohm
156 KBCLK IO PS/2 keyboard clock Pull high with
10Kohm
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 N.C. - N.C. just float this pin. -
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 N.C. - N.C. just float this pin. -
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 N.C. - N.C. just float this pin. -
163 nVCONR_INC O One of STN LCD contrast control
signals. nVCONR_INC is used be
increase/decrease Wiper Control
pin. Advantech suggests to
connect the pin to DS1804 1
st
pin.
No pulling
164 N.C. - N.C. just float this pin. -
165 VCONR_CS O One of STN LCD contrast control
signals. VCONR_CS is used be
chip select pin. Advantech
suggests to connect the pin to
DS1804 7
th
pin.
No pulling
166 N.C. - N.C. just float this pin. -
167 VCONR_UnD O One of STN LCD contrast control
signals. VCONR_UnD is used be
No pulling