Sony CXA7000R Datasheet

LCD Driver

Description

The CXA7000R is a driver IC developed for use with Sony polycrystalline silicon TFT LCD panels. It supports 10-bit digital input, and the input data is analog demultiplexed into 6 phases and output. The CXA7000R can directly drive an LCD panel, and the VCOM setting circuit and precharge pulse waveform generator are also on-chip.

Features

• Supports 10-bit input

• Supports signals up to XGA

• Low output deviation by on-chip output offset cancel circuit

• On-chip timing generator with ECL

• VCOM voltage generation circuit

• Precharge pulse waveform generation circuit

CXA7000R

64 pin LQFP (Plastic)

Applications

LCD projectors and other video equipment

Absolute Maximum Ratings (VSS = 0V)

• Supply voltage VCC 16 V

VDD 5.5 V

• Operating temperature Topr –20 to +70 °C

• Storage temperature Tstg –65 to +150 °C

• Allowable power dissipation PD 1250 mW

Recommended Operating Conditions

• Supply voltage VCC 15.0 to 15.5 V

VDD 4.75 to 5.25 V

• Operating temperature Topr –20 to +70 °C

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 –

E01821A22

Block Diagram

CXA7000R

TEST

STATUS

D_IN9

D_IN8

D_IN7

D_IN6

D_IN5

GND

D_IN4

D_IN3

D_IN2

D_IN1

49

50

51

52

53

54

55

56

57

58

59

60

61

VREF_I

VREF_O

F/H_CNT

DIRC

SL_DAT

48 47 46 45 44 43

Vref Gen.

S/H S/H S/H

D/A

S/H S/H S/H

5

DD

V

PS

42

GND

41 40 39 38 37

PRG

SID_Gen.

SID_LV

SID_OUT

PRG_LV

36

Line inv.

Offset Cancel

Line inv.

Offset Cancel

Line inv.

Offset Cancel

Line inv.

Offset Cancel

Line inv.

Offset Cancel

15

CC

VCOM_OFST

V

35 34 33

VCOM_Gen.

VCOM_OUT

32

31

30

29

28

27

26

25

24

23

22

21

20

PV

CC

SH_OUT1

NC

SH_OUT2

NC

SH_OUT3

GND

PGND

GND

SH_OUT4

NC

SH_OUT5

D_IN0

MCLK

MCLKX

62

63

64

TG

1 2 3 4 5 6

FRP

SHST

POSCNT2

POSCNT1

POSCNT0

FRP

CAL_PLS

7

SHTEST

POSCNT3

8 9 10 11 12

GND

SIG.C

NC

GND

– 2 –

Line inv.

Offset Cancel

Offset Cancel Control

13

14 15 16

CAL_L

GND

CAL_H

SIG_OFST

19

18

17

DCFBOFF

NC

SH_OUT6

CC

PV

Pin Description

CXA7000R

Pin No.

3 4 5 6

Symbol I/O

POSCNT0 POSCNT1 POSCNT2 POSCNT3

Standard voltage level

High: ≥2.0V

IFRP1

Low: ≤0.8V

High: ≥2.0V

ISHST2

Low: ≤0.8V

High: ≥2.0V

I

Low: ≤0.8V

Equivalent circuit Description

V

DD

50k

192

1

LCD panel AC drive inversion timing input. High: inverted Low: non-inverted See the Timing Chart.

GND

V

DD

50k

2

192

Internal sample-and-hold timing circuit reset pulse input. This pin is also used as the offset cancel level insertion timing input. A reset is applied to the internal timing generator at the falling

GND

V

DD

GND

3 4 5 6

192

50k

edge.

Output phase adjustment. The output phase is adjusted in MCLK period units when SL_DAT is high, and in 1/2 MCLK period units when SL_DAT is low.

13 14

CAL_L CAL_H

ISIG.C11

I/O

1 to 5.0V

0 to 5.0VISIG_OFST12

3.0 to 6.0V

9.0 to 12.0V

V

GND

V

DD

12

GND

V

CC

GND

DD

11

30k

40µ 1k

145

20µ

V

10µ

V

CC

Signal center voltage (inversion folded voltage) adjustment input. The SH_OUT output center voltage can be adjusted in the range from 7.0 to 8.0V.

CC

Output signal offset adjustment from signal center voltage. The SH_OUT output 100% white level (at 3FF input) voltage can be adjusted in the range from 0 to 1V from the center voltage.

Level output for canceling the offset between channels.

13 14

Connect the CAL_L and CAL_H, between ICs when using two CXA7000R.

– 3 –

CXA7000R

Pin No.

18 20 22 27 29 31

33

Symbol I/O

SH_OUT6

to

SH_OUT1

VCOM_OUT

Standard voltage level

IDCFBOFF16

1.5 to 13.5V

O

5.0 to 8.0V

O

GND

Equivalent circuit Description

V

16

DD

145

24k

Offset cancel function off. Normally connect to GND to use with the offset cancel function on. High (offset cancel function off) when open.

GND

PVCC

18

300

GND

V

CC

80µ

20 22 27 29 31

Demultiplexed output of AC inverse driven video signals. Can be connected directly to the LCD panel.

LCD panel common voltage output. Can be set in the range from the SH_OUT center potential Vsig.c to Vsig.c – 2V by

100k

500

145

33

VCOM_OFST.

VCOM_OFST

34

GND

VDD VCC

80µ

2k

100

145

36

GND

VCC

34

100k

0.2p

0 to 5.0VI

1.5 to 13.5VOSID_OUT36

100k

LCD panel common voltage adjustment. VCOM_OUT can be set in the range from the SH_OUT center potential Vsig.c to Vsig.c – 2V by inputting 0 to 5V.

Precharge waveform output. These pins cannot directly drive the LCD panel, so input to the LCD panel with an external buffer.

GND

0.2p

– 4 –

CXA7000R

Pin No.

37 38

Symbol I/O

PRG_LV SID_LV

Standard voltage level

1.0 to 5.0V

I

High: ≥2.0V

IPRG39

Low: ≤0.8V

Equivalent circuit Description

VDD VCC

29µ

Precharge level setting. Adjusts the SID_OUT and

37

50k 50k

38

SID_OUTX output potential. PRG_LV is reflected when the PRG input pin (Pin 60) is high, and SID_LV is reflected when PRG is low.

GND

V

DD

100k

39

GND

V

DD

10k

70µ 10µ

V

50µ

CC

Timing pulse input for switching the Pin 36 output levels. (See PRG_LV (Pin 37) and SID_LV (Pin 38).)

Internal D/A converter reference

3.2VIVREF_I44

44

1k

33.3k

voltage input. Normally connect directly to VREF_O.

280µ

GND

High: ≥2.0V Low: ≤0.8V

IF/H_CNT46

Open: Low

High: ≥2.0V

IDIRC47

Low: ≤0.8V

VDD

2k

Reference voltage output.

3.2VOVREF_O45

20µ

GND

VDD

46

20k

12.4k

192

200k

45

50k

Normally connect directly to VREF_I, and connect to GND through a 0.5 to 1.0µF capacitor.

SH_OUT output timing selection. High: SH_OUT1 to SH_OUT3 and SH_OUT4 to SH_OUT6 are output at different timing. Low: SH_OUT1 to SH_OUT6 are output at the same timing.

GND

VDD

50k

192

47

Scan direction setting. High: output as a time series in ascending order of output pin symbol (in order from SH_OUT1 to SH_OUT6)

GND

Low: output in descending order

– 5 –

CXA7000R

Pin No.

51

to 55 58

to 62

Symbol I/O

D_IN9 to D_IN0

Standard voltage level

High: ≥2.0V Low: ≤0.8V

ISL_DAT48

Open: Low

High: ≥2.0V

ISTATUS50

Low: ≤0.8V

High: ≥2.0V

I

Low: ≤0.8V

Equivalent circuit Description

VDD

GND

V

DD

50

48

192

200k

50k

Digital input mode switch setting. High: when using master/slave mode two CXA7000R. Low: when using normal mode one CXA7000R.

Master/slave setting when using two CXA7000R. High: master IC. Offset cancel level is output. Low: slave IC. This pin is left open (high) when using one

GND

VDD

to to

GND

50k

192

5551 6258

CXA7000R.

Digital data input.

63 64

24, 25 17, 32

35

43

MCLK MCLKX

PGND PVCC VCC15 VDD5

PECL differential (amplitude

0.4V or more

I

between VDD to 2V) or TTL input

GND

15.5V

5VIPS42

5V

V

DD

63 64

GND

VDD

42

GND

1k 1k

70k

140k

60k 60k100µ

180k

140k8k

Dot clock input. PECL differential input or TTL input. For TTL input, input to MCLK and connect MCLKX to GND through a capacitor.

Test. Normally connect to VDD.

30µ

Power GND. Po wer VCC. 15V power supply. 5V power supply.

– 6 –

CXA7000R

Pin No.

8, 9, 15, 23, 26, 40, 41,

56, 57

10, 19, 21, 28,

30

Symbol I/O

GND

NC

Standard voltage level

1.7 to 3.2V

OTEST49

GND

2.5VISHTEST7

V

DD

7

GND

Equivalent circuit Description

GND.

NC. These pins are not connected to anything.

20k 20k

250k

192

20k

Test. Leave open.

250k

V

DD

1µ

10µ

2k

192

49

10µ

DAC output monitor test. Normally connect to VDD.

GND

20µ

– 7 –