SONY CXD2453Q

CXD2453Q
Timing Generator for LCD Panels
For the availability of this product, please contact the sales office.
Description
The CXD2453Q is a timing signal generator for
driving the LCX017AL and LCX023AL LCD panels.
This chip outputs timing signals which support XGA
signals (1024 × 768 dots) and S-XGA signals (1280 ×
1024 dots).
Features
• Supports various XGA signals (1024 × 768 dots)
having horizontal scanning frequencies of 44-69kHz
and vertical scanning frequencies of 55 to 85Hz.
• Supports S-XGA (1280 × 1024 dots) pulse
eliminator (horizontal scanning frequency of 69kHz
or less).
• Controls the sample-and-hold position of the
CXA2112R sample-and-hold driver.
• Line inversion and field inversion signal generation
• AC drive of LCD panels during no signal.
80 pin QFP (Plastic)
Absolute Maximum Ratings (VSS = 0V)
• Supply voltage VDD
VSS – 0.5 to +4.0
• Input voltage
VI
(3.3V input pin)
VSS – 0.5 to VDD + 0.5
(5.0V input pin)
VSS – 0.5 to VDD + 2.5
• Output voltage VO
VSS – 0.5 to VDD + 0.5
• Storage temperature
Tstg
–55 to +125
Recommended Operating Conditions
• Supply voltage VDD
+3.0 to +3.6
• Operating temperature
Topr
–20 to +75
Applications
LCD projectors, etc.
Structure
Silicon gate CMOS IC
V
V
V
V
°C
V
°C
Note: Company names and product names, etc.
contains in these materials are the trademarks
or registered trademarks of the respective
companies.
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E97425B7Y-PS
CXD2453Q
XCLR 78
TST5
CKI1
XCKI1
SLCK1
CKI2
CKI3
XCKI3
SLCK2
CKI4
Block Diagram
3
4
26
11
21
22
30
13
Direct Clear
Master Clock
(Main)
24
VSYNC 28
Master Clock
(Sub)
AUX V COUNTER
SYNC DETECTOR
HSYNC 29
V POSITION
COUNTER
SLHR 17
HRET 38
9
TST2
34
TST7
35
TST8
36
TST9
74
TST11
75
TST12
76
TST13
43
BLK
19
SLFR
PLL COUNTER
IRACT 69
V TIMING
GENERATOR
H POSITION
COUNTER
LINE
CONTROLLER
CLP1 39
CLP2
40
41
VCK
44
VST
45
FRP
1
TST1
15
TST3
16
TST4
27
TST6
72 TST10
ENB 47
79
TST14
PRG 48
80
TST15
67
XVS
68
XHS
PCG
H TIMING
GENERATOR
49
HCK1 51
ADDITIONAL
PULSE
GENERATOR
HCK2 53
70 ORACT
HST 55
SCLK
6
SDAT
7
8
VDD
32
VDD
33
VDD
46
VDD
Vss
Vss
Vss
Vss
Vss
Vss
Vss
Vss
Vss
Vss
Vss
Vss
Vss
–2–
Vss
5 10 12 14 20 23 25 31 37 42 50 52 54 63 71 77
Vss
2
Vss
RGT
XRGT
HB
DWN
VB
INV
SHPD
SHPB
SHPC
56 57 58 59 60 61 62 64 65 66
Vss
73 VDD
SHPA
SCTL
SERIAL DATA I/F
18
CXD2453Q
Pin Description
Pin
No.
I/O
1
TST1
—
Test pin (Not connected.)
—
2
VSS
—
GND
—
3
CKI1
4
XCKI1
Master clock input 1 (differential)
—
5
VSS
GND
—
6
SCLK
I
Serial data clock input
—
7
SDAT
I
Serial data input
—
8
SCTL
I
Serial data control signal input
—
9
TST2
—
Test pin (connect to GND)
—
10
VSS
—
GND
—
11
CKI2
Master clock input 2
—
12
VSS
GND
—
13
CKI4
Master clock input 4
—
14
VSS
—
GND
—
15
TST3
—
Test pin (Not connected.)
—
16
TST4
—
Test pin (Not connected.)
—
17
SLHR
I
Reset by HSYNC of PLL counter (High: Disabled, Low: Enabled)
H
18
VDD
Power supply
—
19
SLFR
FRP polarity inversion cycle selection (High: Field inversion, Low: Line inversion)
L
20
VSS
GND
—
21
CKI3
22
XCKI3
Master clock input 3 (differential)
—
23
VSS
—
GND
—
24
TST5
—
Test pin (Not connected.)
—
25
VSS
—
GND
—
26
SLCK1
Clock input selection 1 (High: CKI2, Low: CKI1)
L
27
TST6
—
Test pin (Not connected.)
—
28
VSYNC
I
Vertical sync signal input
—
29
HSYNC
I
Horizontal sync signal input
—
30
SLCK2
I
Clock input selection 2 (High: CKI4, Low: CKI3)
L
31
VSS
—
GND
—
32
VDD
—
Power supply
—
33
VDD
—
Power supply
—
34
TST7
—
Test pin (connect to VDD)
—
35
TST8
—
Test pin (connect to VDD)
—
36
TST9
—
Test pin (connect to VDD)
—
I
—
I
—
I
—
I
—
I
I
Description
Input pin for
open status
Symbol
–3–
CXD2453Q
Pin
No.
Symbol
I/O
37
VSS
—
GND
—
38
HRET
O
Phase comparison pulse output
—
39
CLP1
O
Pedestal clamp pulse 1 output
—
40
CLP2
O
Pedestal clamp pulse 2 output
—
41
VCK
O
V clock pulse output
—
42
VSS
—
GND
—
43
BLK
O
BLK pulse output
—
44
VST
O
V start pulse output
—
45
FRP
O
AC drive inversion pulse output
—
46
VDD
—
Power supply
—
47
ENB
O
ENB pulse output
—
48
PRG
O
PRG pulse output
—
49
PCG
O
PCG pulse output
—
50
VSS
—
GND
—
51
HCK1
O
H clock 1 pulse output
—
52
VSS
—
GND
—
53
HCK2
O
H clock 2 pulse output
—
54
VSS
—
GND
—
55
HST
O
H start pulse output
—
56
SHPA
O
External sample-and-hold driver control signal output
—
57
SHPB
O
External sample-and-hold driver control signal output
—
58
SHPC
O
External sample-and-hold driver control signal output
—
59
SHPD
O
External sample-and-hold driver control signal output
—
60
INV
O
External sample-and-hold driver control signal output
—
61
VB
O
VB signal output
—
62
HB
O
HB signal output
—
63
VSS
—
GND
—
64
DWN
O
Up/down inversion signal output
—
65
XRGT
O
Left/right inversion signal (reverse polarity) output
—
66
RGT
O
Left/right inversion signal output
—
67
XVS
O
Auxiliary pulse output
—
68
XHS
O
Auxiliary pulse output
—
69
IRACT
O
Auxiliary pulse output
—
70
ORACT
O
Auxiliary pulse output
—
71
VSS
—
GND
—
72
TST10
—
Test pin (Not connected.)
—
Description
–4–
Input pin for
open status
CXD2453Q
Pin
No.
Symbol
I/O
73
VDD
—
Power supply
—
74
TST11
—
Test pin (connect to VDD)
—
75
TST12
—
Test pin (connect to VDD)
—
76
TST13
—
Test pin (connect to VDD)
—
77
VSS
—
GND
—
78
XCLR
I
System clear (Low: All clear)
H
79
TST14
—
Test pin (Not connected.)
—
80
TST15
—
Test pin (Not connected.)
—
Input pin for
open status
Description
∗ H: Pull-up, L: Pull-down
Electrical Characteristics
• DC characteristics
Item
Supply voltage
Input voltage 1
Input voltage 2
Symbol
VIH1
VIL1
VIH2
VIH3
VIL3
Input voltage 4
Conditions
Min.
Typ.
Max.
—
3.0
3.3
3.6
—
0.65VDD
—
VDD
VSS
—
0.25VDD
SLHR, SLFR,
XCLR, SLCK1/2
0.65VDD
—
VDD + 1.9
VSS
—
0.25VDD
0.8VDD
—
VDD + 1.9
VSS
—
0.2VDD
(VDD ×
0.606)
– 0.1
VDD ×
0.606
(VDD ×
0.606)
+ 0.1
VIL4 + 0.3
—
VDD
VSS
—
VIH4 – 0.3
VDD – 0.5
—
VDD
VSS
—
0.4
VDD – 0.5
—
VDD
VSS
—
0.4
VDD – 0.5
—
VDD
VSS
—
0.4
25
50
200
kΩ
—
—
40
mA
VDD
VIL2
Input voltage 3
(Topr = –20 to +75°C, VSS = 0V)
VC
(center
level)
VIH4∗1
3.3V CMOS input
5.0V CMOS input
5.0V CMOS
Schmitt trigger input
Low amplitude
differential input
VIL4∗1
Output voltage 1
Output voltage 2
Output voltage 3
VOH
IOH = –4mA
VOL
IOL = 4mA
VOH
IOH = –8mA
VOL
IOL = 8mA
VOH
IOH = –12mA
VOL
IOL = 12mA
Input pull-up/pullRP
down resistance
Current
consumption
IDD
Pull-up VI = 0V
Pull-down VI = VDD
Master clock = 95MHz
VDD = 3.3V
Output load = 30pF
Unit
CKI2, CKI4
V
SCLK, SDAT, SCTL,
VSYNC, HSYNC
CKI1/XCKI1,
CKI3/XCKI3
∗2
VCK, BLK, VST,
ENB, PCG
HCK1, HCK2,
HST
SLHR, XCLR
SLFR, SLCK1/2
∗1 VIH4 > (max. value of VC) and VIL4 < (min. value of VC)
∗2 Output pins other than those indicated in items output voltage 2 and output voltage 3.
–5–
Applicable pins
—
CXD2453Q
• AC characteristics
(Topr = –20 to +75°C, VDD = 3.3V ± 0.3V, VSS = 0V)
Item
Symbol
Clock input cycle
Applicable pins
—
Conditions
Min.
Typ.
Max.
CKI1/XCKI1,
CKI3/XCKI3
—
10.5
—
—
CKI2, CKI4
—
10.5
—
—
tpr/tpf
HCK1, HCK2, HST CL = 90pF
Output rise/fall delay time
tpr/tpf
VCK, BLK, VST,
ENB, PCG
CL = 50pF
Output rise/fall delay time
tpr/tpf
Other output pins
CL = 30pF
Cross-point time difference
∆t
HCK1, HCK2
Duty ratio
tH/ (tH + tL)
HCK1, HCK2
Output rise/fall delay time
Unit
ns
—
—
25
CL = 90pF
–5
—
5
CL = 90pF
48
50
52
Timing Definitions
VDD
CKI1, CKI2,
CKI3, CKI4
50%
0V
VDD
Output
50%
0V
tpr
VDD
Output
50%
0V
tpf
VDD
HCK1
50%
50%
0V
VDD
50%
HCK2
50%
0V
∆t
∆t
tH
HCK1, HCK2
tL
50%
50%
–6–
50%
%
CXD2453Q
Serial Interface AC Characteristics
(Topr = –20 to +75°C, VDD = 3.3V ± 0.3V, VSS = 0V)
Item
SCTL setup time with respect to rise of SCLK
SCTL hold time with respect to rise of SCLK
SDAT setup time with respect to rise of SCLK
SDAT hold time with respect to rise of SCLK
SCLK pulse width
Symbol
Min.
Typ.
Max.
ts0
th0
ts1
th1
tw1
8T∗3
—
—
8T
—
—
4T
—
—
4T
—
—
4T
—
—
∗3 T: Master clock cycle (ns)
Timing Definitions
ts0
SCTL
th0
50%
50%
tw1
SCLK
50%
50%
ts1
SDAT
tw1
50%
th1
(D15)
50% (D0)
–7–
–8–
4 dots
Display area
1032 dots
1024 dots
Gate SW
4 dots
2 dots
768 dots
2 dots
Photo-shielding
area
Gate SW
772 dots
The dot arrangement of the LCD panel (LCX017AL) driven with this IC is shown below. The dot arrangement is a square arrangement. The shaded region in
the diagram is not displayed.
LCD Panel Dot Arrangement
CXD2453Q
CXD2453Q
Description of Operation
• Sync signal input pins (HSYNC, VSYNC)
Horizontal and vertical separate SYNC signals are input to the HSYNC (Pin 29) and VSYNC (Pin 28). The
sync signals are compatible with both positive and negative polarity according to serial data settings. (Refer to
the section on serial data interface for details regarding serial data.)
The CXD2453Q supports signals which are shown in the following table.
Effective dots
Horizontal scanning Vertical scanning
frequency
frequency
1024 × 768 (XGA)
44kHz to 69kHz
55Hz to 85Hz
1280 × 1024 (S-XGA)
≤ 69kHz
Roughly ≤ 65Hz
Remarks
Scanning line conversion from 1024 to 768
vertical lines
In the case of signals defined by special protocols that do not satisfy the conditions in the diagram below, it
may not be possible to obtain a complete display even for the above signals when the image display position is
properly set on the LCD panel. This IC does not support interlace signals.
Image display period
Horizontal blanking period
Image display period
HSYNC
ENB
Min. 0.72µs
Min. 0.17µs
PCG
• Master clock input pins (CKI1/XCKI1, CKI2, CKI3/XCKI3, CKI4) and Clock Selection Pins (SLCK1, SLCK2)
Since this IC does not contain a built-in phase comparator, phase comparison is performed externally and a
divided clock is input. The 1/N (N is the clock number during 1 horizontal period) frequency divider output is
output from the HRET (Pin 38) for the external phase comparator.
The clock input pin consists of two channels for small amplitude differential input (center level: 2.0V, amplitude:
±0.4V), and two channels for CMOS level input for a total of four channels. These are selected according to
the SLCK1 (Pin 26), SLCK2 (Pin 30) and serial data.
(1) During normal operation (serial data SLLAP = 0)
All internal circuits of the IC operate with CKI1 or CKI2. CKI1/XCKI1 are selected when SLCK1 = L (Pins
3/4, small amplitude differential input), and CKI2 is selected when SLCK1 = H (Pin 11, CMOS level input).
(2) When using scan converter (serial data SLLAP = 1)
This is used when the input signal clock and output signal clock are different such as when performing
dot conversion using a scan converter. Only the serial data interface and PLL counter of the IC internal
circuits operate with CKI1 or CKI2 (clock synchronized with input signal). All other blocks operate with
CKI3 or CKI4 (output signal clock). CKI3/XCKI13 are selected when SLCK2 = L (Pins 21/22, small
amplitude differential input), and CKI4 is selected when SLCK2 = H (Pin 13, CMOS level input).
• Internal frequency divider reset selection pin (SLHR)
This selects whether reset of the PLL counter (loop counter) with HSYNC is to be enabled or disabled. In the
case of performing phase comparison of the HSYNC and HRET pulses with an external phase comparator, the
SLHR (Pin 17) is set to H (reset disabled). When phase comparison and frequency division are performed
externally and HRET pulses for phase comparison are not used, the SLHR is set to L (reset enabled). At this
time, the output of each pulse is delayed by approximately 8 clocks as compared with using HRET pulses for
phase comparison.
• Signal inversion type selection pin (SLFR)
This selects the inversion cycle of the polarity inversion pulse (FRP pulse) for AC driving. Setting the SLFR
(Pin 19) to H results in field inversion, while setting the SLFR to L results in line inversion.
–9–
CXD2453Q
• System clear pin (XCLR)
All internal circuits are initialized when the XCLR (Pin 78) is L. Always make sure to initialize all internal circuits
when the power has been turned on.
• Serial data interface
Operating mode and other settings in this IC are performed by serial data. When the power is turned on, all
data are set to the default values when the internal circuits are initialized. When the power supply is turned on,
the value of SDAT is read with the rise of SCLK in groups of 16 bits consisting of 8 address bits and 8 data bits
as shown in the Timing Chart below. The data that has been read is enabled by being transferred to the
register corresponding to each address 10 clocks after the rise of SCLK of the 16th bit.
The Timing Chart and Data Format during transmission of serial data are as shown below.
Timing Chart
SCTL (Pin 8)
SCLK (Pin 6)
D15 D14 D13 D12 D11 D10 D9
SDAT (Pin 7)
D8
D7
Address (8 bits)
D6
D5
D4
D3
D2
D1
D0
Data (8 bits)
Data Format
Address
Data
Settings
D15 to D8
D7
D6
D5
D4
D3
D2
D1
D0
F0
—
—
—
—
—
PLP10
PLP9
PLP8
F1
PLP7
PLP6
PLP5
PLP4
PLP3
PLP2
PLP1
PLP0
PLL counter frequency
division ratio
F2
HP7
HP6
HP5
HP4
HP3
HP2
HP1
HP0
Screen horizontal position
F3
VP7
VP6
VP5
VP4
VP3
VP2
VP1
VP0
Screen vertical position
F4
—
—
—
INV
SHP3
SHP2
SHP1
SHP0
CXA2112R S/H control
F5
—
—
VPOL
HPOL
VSCN
HSCN
SLXG
SLSX
Operating mode, etc.
F6
—
—
HB
VB
SLLAP IRD10
IRD9
IRD8
F7
IRD7
IRD6
IRD5
IRD4
IRD3
IRD2
IRD1
IRD0
Operating mode, etc./
IRACT fall position
F8
—
—
—
—
—
IRU10
IRU9
IRU8
F9
IRU7
IRU6
IRU5
IRU4
IRU3
IRU2
IRU1
IRU0
FA
—
—
—
ORRS1 ORRS0 ORP10 ORP9
ORP8
FB
ORP7
ORP6
ORP5
ORP4
ORP3
FC
—
—
—
—
—
FD
ORD7
ORD6
ORD5
ORD4
ORD3
FE
—
—
—
—
—
FF
ORU7
ORU6
ORU5
ORU4
ORU3
ORP2
ORP1
ORP0
ORD10 ORD9
ORD8
ORD2
ORD1
ORD0
ORU10 ORU9
ORU8
ORU2
ORU0
Note) —: Don't care
– 10 –
ORU1
IRACT rise position
ORACT reset cycle/
ORACT division frequency
ORACT fall position
ORACT rise position
CXD2453Q
The following provides a detailed description of each setting.
(a) Setting of PLL counter frequency division ratio
This is used to set the frequency division ratio of the 1/N frequency divider (PLL counter) for phase
comparison. The value of (total number of dots of 1 horizontal period N) – 1 is set with PLP10 (MSB) through
PLP0 (LSB). The frequency division ratio can be set up to 2048. Only even numbers can be set for the value of
N. When it is necessary to set an odd number, use an external frequency divider. In this case, set the value of
the frequency division ratio of the PLL counter to N-2.
The default value is 10100111111 (N = 1344).
(b) Setting of screen horizontal position
The horizontal display start position is set with HP7 (MSB) through HP0 (LSB). This setting enables the phase
relationships of pulses HST, HCK1/2, ENB, PCG, PRG and CLP1/2 as well as the changing positions of
VCK/FRP relative to HSYNC to change in an interlocked manner. Settings can be made in 1 dot units. Refer to
the Timing Chart for the relationship between the set value and each pulse position.
The default value is 01000100.
(c) Setting of screen vertical position
The vertical display start position is set with VP7 (MSB) through VP0 (LSB). This setting enables the phase
relationships of signals VST, VCK and FRP to change relative to VSYNC in an interlocked manner. Settings
can be made in 1 line units. Refer to the Timing Chart for the relationship between the set value and each
signal.
The default value is 00100011. 00000000 and 11111111 are not used.
(d) S/H control of CXA2112R
This is used to set the sample-and-hold position for the CXA2112R (sample-and-hold driver). INV setting data
is output directly from the INV (Pin 60). Setting data of SHP3 (MSB) through SHP0 (LSB) is reflected as shown
below in the SHPA through SHPD (Pins 56 to 59). Refer to the specifications of the CXA2112R for details.
Setting data
Output
Setting data
Output
SHP3 to SHP0
SHPA
SHPB
SHPC
SHPD
SHP3 to SHP0
SHPA
SHPB
SHPC
SHPD
0000
L
L
L
L
1000
L
L
Z
L
0001
H
H
L
L
1001
H
H
Z
L
0010
Z
L
L
L
1010
Z
L
Z
L
0011
Z
H
L
L
1011
Z
H
Z
L
0100
L
L
H
H
1100
L
L
Z
H
0101
H
H
H
H
1101
H
H
Z
H
0110
Z
L
H
H
1110
Z
L
Z
H
0111
Z
H
H
H
1111
Z
H
Z
H
Note) Z: High impedance state
– 11 –
CXD2453Q
(e) Setting of operating mode, etc.
• VPOL, HPOL: These are used to set the polarity of VSYNC and HSYNC. A setting of "1" denotes positive
polarity, while a setting of "0" denotes negative polarity.
The default values are VPOL = 0, HPOL = 0.
• VSCN, HSCN: These are used to set the vertical and horizontal scanning directions of the LCD panel. VSCN
= 1 denotes downward scanning, while VSCN = 0 denotes upward scanning. HSCN = 1
denotes rightward scanning, while HSCN = 0 denotes leftward scanning. Setting data of
VSCN is output from the DWN (Pin 64), while setting data of HSCN is output from the RGT
(Pin 66).
The default values are VSCN = 0, HSCN = 1.
• SLXG, SLSX: These are used to set the input signals (operating mode). This IC has the following three
operating modes.
The default values are SLXG = 0, SLSX = 0.
Operating mode
SLXG
SLSX
XGA-I
0
0
XGA-II
1
0
S-XGA
X
1
Note) X: Don't care
• HB, VB:
• SLLAP:
The XGA-I mode supports typical XGA signals. The XGA-II mode is for XGA signals in which
there is a low number of dots during a portion of the horizontal blanking period (typically when
HSYNC + back porch is 240 dots or less). Select the appropriate operating mode to satisfy the
conditions in the diagram on page 6 corresponding to the input signal. In the S-XGA mode,
1024 vertical lines are displayed decimating to 768 lines corresponding to the S-XGA signal
(1280 × 1024 dots).
These are used to switch the number of display dots on the LCD panel. The display is set to
960 dots horizontally when HB = 0, and to 640 lines vertically when VB = 0. The data of each
setting is output from the HB (Pin 62) and VB (Pin 61), respectively. Refer to the specifications
of the LCX017AL for details.
The default values are HB = 1, VB = 1.
This is used when the input signal clock and output signal clock differ such as when
converting the number of dots using a scan converter. When SLLAP = 1, only the serial data
interface and PLL counter of the IC internal circuits operate with CKI1 or CKI2 (clock
synchronized with input signal), while other sections operated with CKI3 or CKI4 (output
signal clock). When SLLAP = 0, all internal IC circuits operate with CKI1 or CKI2.
The default value is 0.
(f) Setting of IRACT fall/rise positions
• IRACT pulse
A pulse synchronized with HSYNC of the input signal can be output at any position and width. The fall position
of the pulse is set with IRD10 (MSB) through IRD0 (LSB), while the rise position is set with IRU10 (MSB)
through IRU0 (LSB). The values of IRD0 and IRU0 are ignored, and settings are made in 2-dot increments.
The setting range is from "0" to (N – 2). The same value cannot be set for IRD and IRU. Refer to the Timing
Chart for the relationship between setting values and pulse positions.
The default values are IRD10 through IRD0 = 00000000000, and IRU10 through IRU0 = 00010000000.
– 12 –
CXD2453Q
(g) Setting of ORACT reset cycle/ORACT frequency division ratio
• ORACT pulses
ORACT pulses are completely identical to IRACT pulses when serial data SLLAP = 0, when SLLAP = 1, they
are generated by a dedicated counter (loop counter similar to the PLL counter) that operates according to an
independent clock (CKI3 or CKI4) different from the clock synchronized with input signal HSYNC (CKI1 or
CKI2). Since pulses for driving the LCD panel are also generated based on this counter at this time, the LCD
panel can be driven based on a clock and cycle that are different from the input signal. ORACT pulses are
synchronized with the cycle of the pulse for driving the LCD panel at this time, and can be output at any
position and width.
The frequency division ratio of the above dedicated counter is set with ORP10 (MSB) through ORP0 (LSB).
The value of (number of counter counts M) – 1 is the actual setting value. Only even numbers can be set for M,
and settings are made in 2 dot increments. The maximum setting is 2048 counts. This counter is reset with
VSYNC and HSYNC of a fixed cycle in order to synchronize it with the input signal, the interval of H at which it
is to be reset with this HSYNC is set with ORRS1 and ORRS0.
Setting data (ORRS1/ORRS0)
00
01
10
11
Reset cycle
Every 3H
Every 4H
Every 5H
Every 1H
The default values are ORRS1 = 1, ORRS0 = 1, and ORP10 through ORP0 = 10100111111.
(h) Setting of ORACT fall/rise positions
The fall position of the ORACT pulse is set with ORD10 (MSB) through ORD0 (LSB), while the rise position of
the ORACT pulse is similarly set with ORU10 (MSB) through ORU0 (LSB). The values of ORD0 and ORU0 are
ignored, and settings are made in 2-dot increments. The setting range is from "0" to (M – 2). The same value
cannot be set for ORD and ORU. The relationship between setting values and pulse positions is as indicated
below.
The default values are ORD10 through ORD0 = 00000000000, and ORU10 through ORU0 = 00010000000.
HSYNC
(HSYNC when reset is applied to counter)
ORACT
(default setting)
128ck
8ck
ORD = 000/HEX
ORU = 080/HEX
• XHS pulse and XVS pulse
The XHS pulse is output over a width of 32 clocks 34 clocks after the fall of the IRACT pulse when SLLAP = 0.
The pulse has negative polarity. When SLLAP = 1, the pulse is similarly output over a width of 34 clocks after
the fall of the ORACT pulse.
The XVS pulse is VSYNC latched with the XHS pulse. Its polarity is always negative regardless of the polarity
of the input VSYNC.
• AC driving of LCD panels for no signal
When VSYNC has not been input for a specified period, a judgment of "no signal" is made to allow AC driving
of LCD panels even when there is no signal. A vertical start pulse and polarity inverted pulse (FRP) are output
at a specified cycle. The timing by which a judgment of "no signal" is made and the free running cycle are as
indicated below.
Operating mode
Free running detection timing (no signal period) and VST cycle during free running
All modes
1600H
– 13 –
– 14 –
2fH
34fH
70fH
148fH
128fH
32fH
104fH
188fH
156fH
Note) The phases of HCK1 and HCK2 are respectively reversed when HSCN = 0 (left/right inversion).
The polarity of 1H and 1V cycle of FRP is not defined.
ORACT
IRACT
XHS
FRP
VCK
PRG
PCG
ENB
HCK2
HCK1
HST
CLP2
CLP1
HRET
HSYNC
CKI
Horizontal Direction Timing Chart (XGA-I (1024 × 768 dots))
78fH
140fH
132fH
66fH
30fH
20fH
24fH
PLP = 53F/HEX, HP = 44/HEX, HPOL = 0, HSCN = 1,
SLXG = 0, SLSX = 0, IRD = 000/HEX, IRU = 080/HEX
SLHR: H, SLFR: L
CXD2453Q
– 15 –
2fH
34fH
42fH
104fH
128fH
32fH
80fH
116fH
124fH
62fH
100fH
66fH
108fH
Note) The phases of HCK1 and HCK2 are respectively reversed when HSCN = 0 (left/right inversion).
The polarity of 1H and 1V cycle of FRP is not defined.
ORACT
IRACT
XHS
FRP
VCK
PRG
PCG
ENB
HCK2
HCK1
HST
CLP2
CLP1
HRET
HSYNC
CKI
Horizontal Direction Timing Chart (XGA-II (1024 × 768 dots))
22fH
20fH
24fH
PLP = 51F/HEX, HP = 14/HEX, HPOL = 0, HSCN = 1,
SLXG = 1, SLSX = 0, IRD = 000/HEX, IRU = 080/HEX
SLHR: H, SLFR: L
CXD2453Q
– 16 –
Note) The polarity of 1H and 1V cycle of FRP is not defined.
ORACT
IRACT
XVS
XHS
BLK
PRG
PCG
ENB
HST
FRP
VCK
VST
VSYNC
HRET
HSYNC
Vertical Direction Timing Chart (XGA-I/II (1024 × 768 dots))
VP = 23/HEX, VPOL = 0, SLSX = 0,
IRD = 000/HEX, IRU = 080/HEX, SLFR: L
CXD2453Q
– 17 –
Note) The polarity of 1H and 1V cycle of FRP is not defined.
ORACT
IRACT
XVS
XHS
BLK
PRG
PCG
ENB
HST
FRP
VCK
VST
VSYNC
HRET
HSYNC
Vertical Direction Timing Chart (XGA-I/II (during display of 640 vertical lines))
VP = 23/HEX, VPOL = 0, SLSX = 0, VB = 0,
IRD = 000/HEX, IRU = 080/HEX, SLFR: L
CXD2453Q
– 18 –
2fH
34fH
22fH
114fH
128fH
32fH
102fH
144fH
184fH
102fH
120fH
Note) The phases of HCK1 and HCK2 are respectively reversed when HSCN = 0 (left/right inversion).
The polarity of 1H and 1V cycle of FRP is not defined.
ORACT
IRACT
XHS
FRP
VCK
PRG
PCG
ENB
HCK2
HCK1
HST
CLP2
CLP1
HRET
HSYNC
CKI
Horizontal Direction Timing Chart (S-XGA (1280 × 1024 dots displayed on 960 × 768 dots))
136fH
86fH
26fH
18fH
24fH
PLP = 4F1/HEX, HP = 12/HEX, HPOL = 1, HSCN = 1,
SLSX = 1, IRD = 000/HEX, IRU = 080/HEX
SLHR: H, SLFR: L
CXD2453Q
– 19 –
Note) The polarity of 1H and 1V cycle of FRP is not defined.
ORACT
IRACT
XVS
XHS
BLK
PRG
PCG
ENB
HST
FRP
VCK
VST
VSYNC
HRET
HSYNC
Vertical Direction Timing Chart (S-XGA (1280 × 1024 dots displayed on 960 × 768 dots))
VP = 24/HEX, VPOL = 1, SLSX = 1, IRD = 000/HEX,
IRU = 080/HEX, SLFR: L
CXD2453Q
CXD2453Q
Application Circuit
CXA2112R
(when not using CXA2111R)
SN74HC04
(Vcc = 5.0V)
LCD Panel
(POS CNT1)
(POS CNT2)
SN74HC244
(Vcc = 5.0V)
(INV CNT)
LCD Panel
10
SN74HC86
(Vcc = 5.0V)
10
47k
SN74HC244
(Vcc = 5.0V)
10
10
47k
3.3V
10
0.1µ
10
VSS
VCK
BLK
VST
VDD
FRP
ENB
PRG
VSS
PCG
VSS
HCK1
VSS
HCK2
HST
SHPA
SHPB
SHPC
SHPD
VB
INV
HB
XRGT
CLP2
RGT
CLP1 39
40
67
XVS
HRET
38
68
XHS
VSS
37
69
IRACT
TST9
36
70 ORACT
TST8
35
71 VSS
TST7
34
72 TST10
VDD
33
73 VDD
VDD
32
74 TST11
VSS
31
75
TST12
SLCK2
30
76
TST13
HSYNC
29
77
VSS
VSYNC 28
78
XCLR
10
0.1µ
COMS
TST6 27
SLCK1
26
80 TST15
VSS
25
10µ
TST5
VSS
CKI3
VSS
SLFR
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
VDD
8
SLHR
7
TST4
TST2
6
TST3
SCTL
5
VSS
SDAT
4
CKI4
SCLK
3
VSS
VSS
2
VSS
XCKI1
1
CKI2
CKI1
XCKI3
79 TST14
VSS
1µ
65
66
TST1
10k
VSS
DWN
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
0.1µ
Driver IC/Circuit
10µ
Differential
SLCK1
0.1µ
Serial data
PLL IC∗
HSYNC
VSYNC
∗ PLL IC: Sony CXA3106Q (built-in phase comparator and frequency divider) is recommended.
Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for
any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
– 20 –
CXD2453Q
Package Outline
Unit: mm
80PIN QFP(PLASTIC)
23.90 ± 0.40
3.35MAX
20.00 ± 0.20
0.05MIN
64
0.10
41
80
A
B
25
24
0.25
0.30
0.16 M
0.58MAX
0.35 ± 0.10
0.18MAX
0.80
0.80 ± 0.20
1
0° to 10°
DETAIL B
DETAIL A
PACKAGE STRUCTURE
PACKAGE MATERIAL
EPOXY RESIN
SOLDER PLATING
SONY CODE
QFP-80P-L022
LEAD TREATMENT
EIAJ CODE
QFP080-P-1420
LEAD MATERIAL
42 ALLOY
PACKAGE MASS
1.7g
JEDEC CODE
– 21 –
16.30 ± 0.40
INDEX
17.90 ± 0.40
40
14.00 ± 0.20
65