TFP513

TI PanelBus DIGITAL TRANSMITTER

SLLS611 − AUGUST 2004

3

POST OFFICE BOX 655303

functional block diagram

12-/24-Bit

I/F

Data

Format

Universal Input

T.M.D.S. Transmitter

Serializer

Serializer

Serializer

Control

I2C Slave I/F

For DDC

1.8-V Regulators

With Bypass

Capacitors

PLL

TX2

±

TX1

±

TX0

±

TXC

±

TFADJ

IDCK

±

DATA[23:0]

DE

VSYNC

HSYNC

EDGE/HTPLG

MSEN

PD

ISEL/RST

BSEL/SCL

DSEL/SDA

VREF

Encoder

Encoder

Encoder

HDCP

Cipher

HDCP

Encryption

RDA

RCL

Encrypted

Embedded

HDCP Keys

Key Decryption

Terminal Functions

TERMINAL

I/O

DESCRIPTION

NAME

NUMBER

I/O

DESCRIPTION

Input Pins

DATA[23:12]

36−47

I

The upper 12 bits of the 24-bit pixel bus.

In 24-bit, single-edge input mode (BSEL = high), this bus inputs the top half of the 24-bit pixel bus.

In 12-bit, dual-edge input mode (BSEL = low), these bits do not input pixel data. In this mode, the state of

DATA[23:16] is input to the I2C register CFG. This allows 8 bits of user configuration data to be read by

the graphics controller through the I2C interface (see the I2C register descriptions section).

Note: All unused data inputs must be tied to GND or VDD.

DATA[11:0]

50−55,

58−63

I

The lower 12 bits of the 24-bit pixel bus/12-bit pixel bus input.

In 24-bit, single-edge input mode (BSEL = high), this bus inputs the bottom half of the 24-bit pixel bus.

In 12-bit, dual-edge input mode (BSEL = low), this bus inputs 1/2 pixel (12 bits) at every latch edge (both

rising and falling) of the clock.

DE

2

I

Data enable. As defined in the DVI 1.0 specification, the DE signal allows the transmitter to encode pixel

data or control data on any given input clock cycle. During active video (DE = high), the transmitter

encodes pixel data, DATA[23:0]. During the blanking interval (DE = low), the transmitter encodes

HSYNC, VSYNC, and CTL[3:1].