_

+

Latch

Channel 2

_

+

Latch

Channel 1

_

+

Latch

Channel 0

_

+

PLL

T.M.D.S.

Decoder

CH2[9:0]

CH1[9:0]

CH0[9:0]

RED[7:0]

CTL2

GRN[7:0]

CTL1

BLU[7:0]

VSYNC

HSYNC

QE[23:0]

QO[23:0]

ODCK

DE

SCDT

CTL2

CTL1

VSYNC

HSYNC

1.8 V

Regulator

3.3 V

Internal 50 Ω

Termination

Rx2+

Rx2-

Rx1+

Rx1-

Rx0+

Rx0-

RxC+

RxC-

HDCP

Decryption

RED[7:0]

CTL2

GRN[7:0]

CTL1

BLU[7:0]

VSYNC

HSYNC

Panel

Interface

for EEPROM

PROM_SCL

3.3 V

PROM_SDA

Key Decryption

RAM Block

for DDC

DDC_SCL

DDC_SA

DDC_SDA

Registers

TFP501

www.ti.com

SLDS127C

– JULY 2001 – REVISED JULY 2011

FUNCTIONAL BLOCK DIAGRAM

PIN FUNCTIONS

PIN

I/O

DESCRIPTION

NAME

NO.

AGND

79

Analog Ground - Ground reference and current return for analog circuitry.

82, 85, 88, 91

CAP

67

O

Bypass capacito r

– 4.7 µF tantalum and 0.01 µF ceramic capacitors connected to ground.

General-purpose control signals

– Used for user defined control. In normal mode CTL1 is not powered down via

CTL[2:1]

41, 40

O

PDO.

Display data channel_serial address

DDC_SA

94

I

Interface section for more details.

DDC_SCL

92

I/O

Display data channel_serial clock

DDC_SDA

93

I/O

Display data channel_serial data

Output data enable

– Used to indicate time of active video display versus nonactive display or blanking interval.

During blanking, only HSYNC, VSYNC, and CTL1-2 are transmitted. During times of active display, or nonblanking,

only pixel data, QE[23:0] and QO[23:0], is transmitted.

DE

46

O

High : active display interval

Low: blanking interval

Output clock data format

– Controls the output clock (ODCK) format for either TFT or DSTN panel support. For TFT

support ODCK clock runs continuously. For DSTN support ODCK only clocks when DE is high; otherwise, ODCK is

held low when DE is low.

DFO

1

I

High : DSTN support/ODCK held low when DE = low

Low: TFT support/ODCK runs continuously.

DGND

5, 39, 68

Digital ground

– Ground reference and current return for digital core

Copyright

© 2001–2011, Texas Instruments Incorporated

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