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User’s Manual for Advantech SOM-A2552 series module V1.00
24
pin
. Advantech suggests to
connect the pin to DS1804 1
st
pin.
164
CRT_HSYNC
AO
Horizontal sync for the CRT. No pulling
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
CRT_VSYNC
AO
Vertical sync for the CRT. No pulling
167
VCONR_UnD
O
One of STN LCD contrast control
signals.
VCONR_UnD is used be
Up/Down Control. Advantech
suggests to connect the pin to
DS1804 2
nd
pin.
No pulling
168
CRT_SDA -
Reserved for future use. User can
connect the pin to CRT I2C data
pin or just float it.
Pull high with
4.71Kohm
169
CRT_CLK -
Reserved for future use. User can
connect the pin to CRT I2C clock
pin or just float it.
Pull high with
4.71Kohm
170
B0 O
B0 in 24-bit TFT mode. No pulling
171
B1 O
B in 24-bit TFT mode. No pulling
172
B2 O
B in 24-bit TFT mode. No pulling
173
B3 O
B in 24-bit TFT mode. No pulling
174
B4 O
B in 24-bit TFT mode. No pulling
175
B5 O
B in 24-bit TFT mode. No pulling
176
B6 O
B in 24-bit TFT mode. No pulling
177
B7 O
B in 24-bit TFT mode. No pulling
178
G0 O
G in 24-bit TFT mode. No pulling
179
G1 O
G in 24-bit TFT mode. No pulling
180
G2 O
G in 24-bit TFT mode. No pulling
181
G3 O
G in 24-bit TFT mode. No pulling
182
G4 O
G in 24-bit TFT mode. No pulling
183
G5 O
G in 24-bit TFT mode. No pulling
184
G6 O
G in 24-bit TFT mode. No pulling
185
G7 O
G in 24-bit TFT mode. No pulling
186
R0 O
R in 24-bit TFT mode. No pulling
187
R1 O
R in 24-bit TFT mode. No pulling
188
R2 O
R in 24-bit TFT mode. No pulling
189
R3 O
R in 24-bit TFT mode. No pulling
190
R4 O
R in 24-bit TFT mode. No pulling
191
R5 O
R in 24-bit TFT mode. No pulling
192
R6 O
R in 24-bit TFT mode. No pulling
193
R7 O
R in 24-bit TFT mode. No pulling
194
N.C. - N.C. just float this pin. -
195
N.C. - N.C. just float this pin. -
196
FLM_VSYNC
O
Flat Panel TFT Vertical Sync/STN
Frame Pulse. For TFT displays,
this output connects to the Vertical
No pulling