Sony CXA3268AR Datasheet

CXA3268AR

Driver/Timing Generator for Color LCD Panels

Description

The CXA3268AR is an IC designed to drive the color

LCD panels ACX300, ACX301, ACX302 and ACX703.

This IC greatly reduces the number of peripheral circuits and parts by incorporating a RGB driver and timing generator for video signals onto a single chip. This chip has a built-in serial interface circuit and electronic attenuators which allow various settings to be performed by microcomputer control, etc.

Features

• Color LCD panel ACX300, ACX301, ACX302 and

ACX703 driver

• Supports NTSC and PAL systems

• Supports 16:9 wide display (letter box and pulse

elimination display)

• Supports Y/color difference and RGB inputs

• Supports OSD input (digital input)

• Power saving function

• Serial interface circuit

• Electronic attenuators (D/A converter)

• Trap and LPF (f0, fc variable)

• COMMON and PSIG output circuits

• Sharpness function

• 2-point γ correction circuit

• R, G, B signal delay time adjustment circuit

• D/A output pin (0 to 3V, 8 level output)

• Output polarity inversion circuit

• Supports AC drive for LCD panel during no signal

Applications

Compact LCD monitors, etc.

Absolute Maximum Ratings (Ta = 25°C)

• Supply voltage VCC16 V

VCC215 V VCC315 V VDD 5.5 V

• Analog input pin voltage

VINA (Pins 57, 58 and 59)

GND – 0.3 to VCC1 + 0.3 V VINA (Pins 3, 69) VCC1V VINA (Pin 30) 1.5 to VCC2 – 4 V VINA (Pin 71) 0.9 Vp-p VINA (Pins 70, 72) 0.8 Vp-p

• Digital input pin voltage VIND (other than Pins 5, 10, 14, 15 and 16)

VSS – 0.3 to VDD + 0.3 V

VIND (Pins 5, 10) VSS – 0.3 to +5.5 V

• Common input pin voltage VINAD (Pins 14, 15 and 16)

GND, VSS – 0.3 to +5.5 V

• Operating temperature

Topr –15 to +75 °C

• Storage temperature

Tstg –55 to +150 °C

• Allowable power dissipation

PD (Ta ≤ 25°C) 737 mW

Operating conditions

• Supply voltage

VCC1 – GND1 2.7 to 3.6 V VCC2 – GND2 11.0 to 14.0 V VCC3 – GND3 11.0 to 14.0 V VDD – Vss 2.7 to 3.6 V

• Input voltage

SIG.C voltage

VSIG.C 5.0 to 6.5 V

RGB input signal voltage (Pins 70, 71 and 72)

∗1

VRGB 0 to 0.7 (0.5 typ.) Vp-p

Y input signal voltage (Pin 71)

∗2

VY 0 to 0.5 (0.35 typ.) Vp-p

R-Y input voltage (Pin 72)

∗2

VR-Y 0 to 0.49 (0.245 typ.) Vp-p

B-Y input voltage (Pin 70)

∗2

VB-Y 0 to 0.622 (0.311 typ.) Vp-p

∗1

During RGB input

∗2

During Y/color difference input

– 1 –

E99529B98-PS

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.

72 pin LQFP (Plastic)

– 2 –

CXA3268AR

Block Diagram

1 2 3 4 5 6 7 8 9 10 11 12

13 14

15 16 17 18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38394041424344454647484950515253

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

Vss

FIL OUT

SYNC IN

SYNC OUT

CSYNC/HD

DA OUT

REF

F ADJ

GND1

VD

DWN

WIDE

TST1

SCK

SEN

SDAT

R INJECT

V

SS

G OUT

G DC DET

R OUT

R DC DET

B OUT

B DC DET

SIG.C

GND2

TST2

HDO

VDO

XCLR

RPD

Vss

CKI

CKO

V

DD

VDD

+3.0V

Vss

VssGND1Vss

MCK

V

DD

TST11

OSD B

OSD R

OSD G

NC

HCK1

HCK2

Vcc1

HST

EN

VCK

VST

RGT

FIL IN

B/B-Y

G/Y

DA

R/R-Y

Vss

TST10

TST9

TST8

TST7

TST6

TST5

NC

POF

TST4

GND3

COM

Vcc3

TST3

PSIG OUT

PSIG DC DET

Vcc2

CLK

CLP

Buf

+12.0V+12.0VGND3Vss Vss

S/P CONV REGISTER DAC

PHASE COMPARATOR

PLL COUNTER

HSYNC DET H SKEW DET

V CONTROL V POSITION

PULSE ELM

H.FILTER SYNC SEP

POL SW

MODE

HDO GEN

VDO GEN

S/H

S/H GEN

HCK GEN

OSD RGB

TRAP

LPF

CLAMP

FILTER BIAS

HCOUNTER HPULSE GEN

POL SW

GAMMA

CLAMP

BLK-LIM

USER-BRIGHT

G R B

SUB-BRIGHT

CK CONTROL

PSIGBRIGHT

Buf

PSIGBRT

U-BRT

MODE

LPF

FILTER

PIC-G

HUE

COLOR

PIC-F

CONT

SUB-BRT R SUB-BRT B

γ 1 γ 2 WHITLIM SUB-CONT R SUB-CONT B

BLKLIM

COM-DC

REF

Buf

SIG.C

CONTRAST

G R B

CLAMP

MATRIX

DL1 DL1

PICTURE

HUE

V COUNTER

V SEP

– 3 –

CXA3268AR

Pin Description

Pin No.

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

VSS FIL OUT SYNC IN SYNC OUT CSYNC/HD DA OUT REF F ADJ GND1 VD DWN WIDE TST1 SCK SEN SDAT R INJECT VSS VDD VDD CKO CKI VSS RPD XCLR VDO HDO TST2 GND2 SIG.C B DC DET B OUT R DC DET R OUT G DC DET G OUT VCC2

—

O

I

O

I O O O

—

I O O

—

I

I O

— — —

O

I

—

O

I O O

— —

I O O O O O O

—

Digital 3.0V GND H filter output (for using internal sync separation) Sync separation circuit input (for using internal sync separation) Sync separation circuit output (for using internal sync separation) CSYNC/horizontal sync signal input DAC output Level shifter circuit REF voltage output for LCD panel Trap f0 adjusting resistor connection Analog 3.0V GND Vertical sync signal input Up/down inversion switching signal output 16:9 wide display switching pulse output Test (Leave this pin open.) Serial clock input Serial load input Serial data input Serial block current controlling resistor connection Digital 3.0V GND Digital 3.0V power supply Digital 3.0V power supply Oscillation cell output Oscillation cell input Digital 3.0V GND Phase comparator output Power-on reset capacitor connection (timing generator block) VDO pulse output HDO pulse output Test (Connect to GND.) Analog 12.0V GND R, G, B and PSIG output DC voltage adjustment B signal DC voltage feedback circuit capacitor connection B signal output R signal DC voltage feedback circuit capacitor connection R signal output G signal DC voltage feedback circuit capacitor connection G signal output Analog 12.0V power supply

L

H

Symbol I/O Description

Input pin for open status

– 4 –

CXA3268AR

Pin No.

38 39 40 41 42 43 44

45 46

47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72

PSIG DC DET PSIG OUT TST3 VCC3 COM GND3 TST4

POF NC

TST5 TST6 TST7 TST8 TST9 TST10 VSS VSS VDD TST11 OSD B OSD R OSD G NC HCK1 HCK2 VCC1 HST EN VCK VST RGT FIL IN B/B-Y G/Y R/R-Y

O

O — —

O

— — — — — — — — — —

I I I

O

O —

O

I I I I

PSIG signal DC voltage feedback circuit capacitor connection PSIG output Test (Leave this pin open.) Analog 12.0V COM (CS) power supply Common pad voltage for LCD panel output (CS) Analog 12.0V COM (CS) GND Test (Leave this pin open.) LCD panel power supply on/off (Leave this pin open when not using

this function.)

Test (Connect to GND.) Test (Connect to GND.) Test (Leave this pin open.) Test (Leave this pin open.) Test (Leave this pin open.) Test (Leave this pin open.) Digital 3.0V GND Digital 3.0V GND Digital 3.0V power supply Test (Connect to GND.) OSD B input OSD R input OSD G input

H clock pulse 1 output H clock pulse 2 output Analog 3.0V power supply H start pulse output EN pulse output V clock pulse output V start pulse output Right/left inversion switching signal output H filter input (for using internal sync separation) B/B-Y signal input G/Y signal input R/R-Y signal input

Symbol I/O Description

Input pin for open status

∗

DWN: DOWN SCAN and UP SCAN, RGT: RIGHT SCAN and LEFT SCAN H: pull-up processing, L: pull-down processing

– 5 –

CXA3268AR

Analog Block Pin Description

Pin No.

2 FIL OUT

Amplifies and outputs the sync portion of the video signal input to FIL IN (Pin 69).

Sync separation circuit input. Inputs the FIL OUT (Pin 2) output signal via a capacitor.

Sync separation output. Positive polarity output in open collector format.

DA output. Outputs the serial data converted to DC voltage. The current driving capacity is ±1.0mA (max.).

REF output. Outputs the serial data converted to DC voltage. The current driving capacity (sink) is ±1.5mA (max.).

2.15V

1.1V

—

SYNC IN

SYNC OUT

DA OUT

REF

3

4

6

7

Symbol

Pin voltage

Equivalent circuit Description

VCC1

23k

200

GND1

2

VCC1

200

GND1

3

VCC1

GND1

4

VCC1

50

GND1

6

VCC1

51k

GND1

7

– 6 –

CXA3268AR

No.

8

F ADJ

Connect a resistor between this pin and GND1 to control the internal LPF and trap frequencies. Connect a 33kΩ resistor (tolerance ±2%, temperature characteristics ±200ppm or less). This pin is easily affected by external noise, so make the connection between the pin and external resistor, and between the GND side of the external resistor and the GND1 pin as close as possible.

Analog 3.0V GND.

1.1V

—

GND1

9

Symbol

Pin voltage

Equivalent circuit Description

VCC1

GND1

10

6.5k

8

14 15 16

SCK SEN SDAT

Serial clock, serial load and serial data inputs for serial communication.

—

VCC1

200

GND1

14 15 16

17 R INJECT

Connect a resistor for setting the injector current of the IIL logic circuit. Connect a 15kΩ resistor between this pin and GND1. Use a resistor with a deviation of ±2% and temperature characteristics of ±200ppm or less.

0.7V

29

GND2

Analog 12.0V GND. (for the RGB and PSIG output circuits)

—

VCC1

200

GND1

17

30 SIG.C

R, G, B and PSIG output DC voltage setting. Connect a 0.01µF capacitor between this pin and GND1. When using a SIG.C of other than VCC2/2, input the SIG.C voltage from an external source.

Preset VCC2/2

Variable range:

5.0 to 6.5V

VCC2

GND1

140k

200

10p

30

– 7 –

CXA3268AR

Pin No.

31 33 35 38

B DC DET R DC DET G DC DET PSIG DC DET

Smoothing capacitor connection for the feedback circuit of R, G, B and PSIG output DC level control. Connect a low-leakage capacitor.

1.8V

Symbol

Pin voltage

Equivalent circuit Description

VCC2 VCC1

200

GND1

31 33 35 38

32 34 36 39

B OUT R OUT G OUT PSIG OUT

R, G, B and PSIG signal outputs. The DC level is controlled to match the SIG.C pin voltage. Low output in power saving mode. VCC2/2V output when preset.

VCC2/2 (SIG.C = preset)

37

VCC2

Analog 12.0V power supply. (for the RGB and PSIG output circuits)

12.0V

41 VCC3

Analog 12.0V power supply. (for COM (CS) output)

12.0V

VCC2

166k

10 10

GND2

32 34 36 39

42 COM

COMMON voltage output. The output voltage is controlled by serial communication.

—

VCC3

200

GND3

42

90k

57 58 59

OSD B OSD R OSD G

OSD pulse inputs. When one of these input pins exceeds the Vth1 level, all of the outputs go to black limiter level; when an input pin exceeds the Vth2 level, only the corresponding output goes to white limiter level.

Vth1 = VCC1 × 1/3

Vth2 = VCC1 × 2/3

VCC1

50k

GND1

57

59

58

43 GND3

Analog 12.0V GND. (for COM (CS) output)

—

– 8 –

CXA3268AR

No.

69 FIL IN

H filter input. Input the video signal via a capacitor.

1.2V

63

VCC1

Analog 3.0V power supply.

—

Symbol

Pin voltage

Equivalent circuit Description

VCC1

GND1

200

69

70 71 72

B/B-Y G/Y R/R-Y

In Y/color difference input mode, input the Y signal to Pin 71, the B-Y signal to Pin 70, and the R-Y signal to Pin 72. In RGB input mode, input the B signal to Pin 70, the G signal to Pin 71 and the R signal to Pin 72. Pedestal clamp these pins with external coupling capacitors.

G/Y 1.8V R/R-Y,

B/B-Y, RGB:

1.8V

Y/color difference:

2.0V

VDD1

GND1

200

70 71 72

– 9 –

CXA3268AR

Digital Block Pin Description

Pin No.

1 18 23 53 54

VSS Digital 3.0V GND.—

19 20 55

VDD

Digital 3.0V power supply.—

5 14 15 16

CSYNC/HD SCK SEN SDAT

Composite sync/horizontal sync signal input, and serial clock, serial load and serial data inputs for serial communication.

—

10 VD

Vertical sync signal input.

—

21 22 24

CKO CKI RPD

Oscillation circuit output. Oscillation circuit input. Phase comparator output.

— — —

Symbol

Pin voltage

Equivalent circuit Description

VSS

5

15 1614

VSS

10

VSS

VDD

25

VSS

VDD

67

66

68

11

64

65

26

27 45 61

62

12

25 XCLR Digital block system reset.—

11 12 26 27 45 61 62 64 65 66 67 68

DWN WIDE VDO HDO POF HCK1 HCK2 HST EN VCK VST RGT

Digital block outputs.—

– 10 –

CXA3268AR

Test Pin Description

No.

13 40 44 49 50 51 52

TST1 TST3 TST4 TST7 TST8 TST9 TST10

Test. Leave these pins open.

—

28 47 48 56

TST2 TST5 TST6 TST11

Test. Connect to GND.

—

Symbol

Pin voltage

Equivalent circuit Description

– 11 –

CXA3268AR

Setting Conditions for Measuring Electrical Characteristics

Use the Electrical Characteristics Measurement Circuit on page 22 when measuring electrical characteristics. For measurement, the digital block must be initialized and power saving must be canceled by performing Settings 1 and 2 below. In addition, the serial data must be set to the initial settings shown in the table below.

Setting 1. Horizontal AFC adjustment

Input a signal and adjust the VCO using V22 so that WL and WH of the TP24 output waveform are the same.

Setting 2. Canceling power saving mode

The power-on default is power saving mode, so clear (set all "0") serial data PS0, PS1, PS2, PS4 and SYNC GEN.

Horizontal sync signal

RPD (Pin 24)

WS

WL WH WL WH WL = WH

WS

Fig. 1. Horizontal AFC adjustment

Serial data initial settings

Note) If there is the possibility that data may be set at other than the above-noted addresses, set these data to "0".

MSB ADDRESS LSB MSB DATA LSB

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0

0 0 0 0

0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0

0 0 0 0

0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 1

1 1 1 1

0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 1 0

0 0 0 0

0 0 0 0 0 0 0 0 1 1 1 1

1 1 1 1 0 0

0 0 0 0

0 0 0 0 1 1 1 1 0 0 0 0

1 1 1 1 0 0

0 0 0 1

0 0 1 1 0 0 1 1 0 0 1 1

0 0 1 1 0 0

0 1 1 0

0 1 0 1 0 1 0 1 0 1 0 1

0 1 0 1 0 0

1 0 1 0

USER-BRIGHT SUB-BRIGHT R SUB-BRIGHT B

CONTRAST SUB-CONTRAST R SUB-CONTRAST B

γ-2 γ-1

0

PSIG-BRIGHT

COM-DC

COLOR

HUE

(01000110/LSB) (10001010/LSB) (10001010/LSB) (00111111/LSB) (10011111/LSB) (10011111/LSB) (11111111/LSB) (11111111/LSB) (1011111/LSB) (10000000/LSB) (00000000/LSB) (10000000/LSB)

WHITE-LIMITER

(00/LSB)

BLACK-LIMITER (11111/LSB)

LPF (000/LSB)

REF (000/LSB)

FILTER (00/LSB)

PICTURE-F0

(00/LSB)

PICTURE-GAIN (00000/LSB)

0

0 0 0

MODE (1)

DA (000/LSB)

0

SLSYP (1)

0 0 0 0

0

SLEXVD (0) SLFL (0)

0 0 0

SYNC GEN

(0) SLDWN (0) SLFR (0) SLTST4 (0)

0 0

PS 4

(0) SLRGT (0) SL4096 (0) SLTST3 (0)

0

SLSH2 (1)

SLCLP2 (0)

SLSH0 (1)

PS 2

(0) SLSH1 (1) SLCLP1 (0) SLTST2 (0)

PS 1

(0) SLWD (0) SLVDP (0) SLTST1 (0)

PS 0

(0) SLPL (0) SLHDP (0) SLTST0 (0)

H-POSITION (10000)

HD-POSITION (00000)

0

– 12 –

CXA3268AR

Electrical Characteristics — DC Characteristics Analog Block Unless otherwise specified, Ta = 25°C, VCC1 = VDD =3.0V, VCC2/VCC3 = 12.0V,

SW4 = off for the current consumption measurement, see page 11 for the DAC.

Item

Current consumption 1 (Y/color difference input)

Current consumption 2 (Y/color difference input)

Current consumption 3 (Y/color difference input)

Current consumption 1 (RGB input) Current consumption 2 (RGB input) Current consumption 3 (RGB input) Current consumption 1 (PS0 = 1) Current consumption 2 (PS0 = 1) Current consumption 3 (PS0 = 1) Current consumption 1 (PS2 = 1) Current consumption 1 (PS4 = 1) Current consumption 1 (SYNC GEN = 1) Current consumption 2 (SYNC GEN = 1) Current consumption 3 (SYNC GEN = 1) FIL OUT pin voltage SYNC IN pin voltage SYNC OUT pin voltage F ADJ pin voltage R INJECT pin voltage SIG.C pin voltage B DC DET pin voltage R DC DET pin voltage G DC DET pin voltage PSIG DC DET pin voltage FIL IN pin voltage B/B-Y pin voltage 1 B/B-Y pin voltage 2 G/Y pin voltage R/R-Y pin voltage 1 R/R-Y pin voltage 2 REF pin voltage (power saving mode)

OSD input resistance

I1

I2

I3 IRGB1

IRGB2 IRGB3 IPS01 IPS02 IPS03 IPS21 IPS41 ISG1 ISG2 ISG3 V2 V3 V4 V8 V17 V30 V31 V33 V35 V38 V69 V70 V70 V71 V70 V70 V7 V57

V58 V59

Measure the inflow current to Pin 63.

Measure the inflow current to Pin 37.

Measure the inflow current to Pin 41. Measure the inflow current to Pin 63.

Measure the inflow current to Pin 37. Measure the inflow current to Pin 41. Measure the inflow current to Pin 63. Measure the inflow current to Pin 37. Measure the inflow current to Pin 41. Measure the inflow current to Pin 63. Measure the inflow current to Pin 63. Measure the inflow current to Pin 63. Measure the inflow current to Pin 37. Measure the inflow current to Pin 41. During no input During no input During no input

During Y/color difference input During RGB input

During Y/color difference input During RGB input I7 = 1.5mA

1.8

0.8

0.4

5.8

1.5

0.9

1.7

1.5

1.7

1.5

80

27.0

3.8

0.90

23.0

3.8

0.90

7.5

0.18

26.5

7.0

0.18

2.1

1.1

0.2

1.1

0.7

6.0

1.8

1.2

2.0

1.8

2.0

1.8

100

37.0

5.0

1.3

30.0

5.0

1.3

10.0

0.35

1.00

36.5

9.5

0.35

1.00

2.4

1.4

0.4

1.4

1.0

6.2

2.1

1.5

2.3

2.1

2.3

2.1

0.3

120

mA

mA mA

mA mA mA mA

µA mA mA mA mA

µA

V V V V V V V V V V V V V V V V V

kΩ

Symbol Measurement conditions Min. Typ. Max. Unit

– 13 –

CXA3268AR

Digital Block (including some analog block) (Ta = –15 to +75°C, VDD = VCC1 = 3.7 to 3.6V)

Item

High level input voltage Low level input voltage High level threshold voltage Low level threshold voltage Hysteresis voltage High level threshold voltage Low level threshold voltage Hysteresis voltage High level input current Low level input current High level input current Low level input current High level input current Low level input current High level input current Low level input current Low level output voltage High level output voltage Low level output voltage High level output voltage Low level output voltage High level output voltage Low level output voltage High level output voltage Output leak current

VIH VIL VT+1 VT–1 VT+1 – VT–1 VT+2 VT–2 VT+2 – VT–2

| IIH1 | | IIL1 | | IIH2 | | IIL2 | | IIH3 | | IIL3 | | IIH4 | | IIL4 |

VOL1 VOH1 VOL2 VOH2 VOL3 VOH3 VOL4 VOH4 | IOZ |

Schmitt buffer

VI = VDD VI = 0V VI = VDD VI = 0V VI = VDD VI = 0V VI = VDD VI = 0V IOL = 1mA IOH = –0.25mA IOL = 2mA IOH = –0.5mA IOL = 4mA IOH = –1mA IOL = 1.5mA IOH = –1.25mA High impedance status

VDD × 0.7

0.6

0.4

0.6

0.2

10 10

2.6

VDD – 0.5

Symbol

Measurement conditions

Min.

40 40

Typ.

VDD × 0.3

2.6

1.0

3.0 100 100

3.0

1.0

2.0

0.3

0.4

1.0

Max.

V V V V V V V

V µA µA µA µA µA µA µA µA

V

V µA

Unit

∗1

∗2

∗3

∗4

∗5

∗6

∗7

∗8

∗9

∗10

∗11

∗12

Applicable pins

∗1

XCLR (Pin 25), CKI (Pin 22)

∗2

CSYNC/HD (Pin 5), VD (Pin 10)

∗3

SCK (Pin 14), SEN (Pin 15), SDAT (Pin 16)

∗4

CSYNC/HD (Pin 5), CKI (Pin 22)

∗5

XCLR (Pin 25)

∗6

VD (Pin 10)

∗7

SCK (Pin 14), SEN (Pin 15), SDAT (Pin 16)

∗8

DWN (Pin 11), WIDE (Pin 12), VCK (Pin 66), VST (Pin 67), RGT (Pin 68)

∗9

RPD (Pin 24), VDO (Pin 26), HDO (Pin 27), POF (Pin 45), HST (Pin 64), EN (Pin 65)

∗10

HCK1 (Pin 61), HCK2 (Pin 62)

∗11

CKO (Pin 21). However, when measuring the output pin (CKO), the input level of the input pin (CKI) should be 0V or VDD.

∗12

RPD (Pin 24)