CXA2112 Sony Corporation, CXA2112 Datasheet - Page 15

• Manufacturer Part Number: CXA2112
• Description: LCD Driver
• Manufacturer: Sony Corporation

5. Operation Mode Setting
1) For each RGB channel, LCX016 requires demultiplexed 6 analog outputs (one CXA2112R), and LCX017
Fixed Mode Setting
2) Scan direction switching
3) Sample-and-hold position setting
S/12_CNT (Pin 10)
F/R_CNT (Pin 5)
NEXT_IN (Pin 4)
NEXT_OUT (Pin 3)
needs 12 (two CXA2112R). In either case, scan direction switching, sample-and-hold position and phase
can be controlled. The mode input pin settings for each case are shown below.
DIR_CNT (Pin 13) high gives forward scan, and low gives reverse scan. For forward scan, the input signal
level time series is output in descending order from SH_OUT1, and for reverse scan, in descending order
from SH_OUT6.
For 12-output, SH_OUT6 and SH_OUT1 operated as if connected in order.
Output's phase can be changed by the voltage applied to
POS_CNT1 (Pin 1) and POS_CNT2 (Pin 2). This setting is
done for adjustment of the LCD panel input signal timing.
Each input pin has 4 setting values, for a total of 16
settings.
POS_CNT1 is lower, POS_CNT2 is upper, and each
setting values are as shown in Table A-1.
6-outputs
LCX016
Short
High
X
1
Table B
"FRONT" half of
Connect to the other NEXT_OUT
Connect to the other NEXT_IN
12 outputs
High
Low
LCX017
2
– 15 –
"REAR" half of
1
12 outputs
X: Don't Care
Low
Low
2
Setting value
Setting Voltage Range for
Sample-and-Hold Position
2
"FRONT": input data sampling
begins from "FRONT" chip for
forward scan direction
(DIR_CNT high).
0
1
2
3
Table A-1
GND
1.15
1.70
2.95
Threshold
to
to
to
to
0.75V
1.50V
2.55V
V
DD
CXA2112R