IT66121FN View Datasheet(PDF) - ITE Tech. INC.

Part Name

Description

Manufacturer

IT66121FN

Low Power Transmitter with HDMI1.4 3D

ITE Tech. INC. 

IT66121FN

End of Active Video (EAV) that this block uses to extract the required control signals.

Generation of data enable signal (DE Generator)

DE signal defines the region of active video data. In cases where the video decoders supply no such

DE signals to IT66121, this block is used to generate appropriate DE signal from Hsync, Vsync and

Clock.

Upsampling (YCbCr422 to YCbCr444)

In cases where input signals are in YCbCr 4:2:2 format and output is selected as 4:4:4, this block is

enabled to do the upsampling.

Bi-directional Color Space Conversion (YCbCr ↔ RGB)

Many video decoders only offer YCbCr outputs, while DVI 1.0 supports only RGB color space. In order

to offer full compatibility between various Source and Sink combination, this block offers bi-directional

RGB ↔ YCbCr color space conversion (CSC). To provide maximum flexibility, the matrix coefficients

of the CSC engine in IT66121 are fully programmable. Users of IT66121 could elect to employ their

preferred conversion formula.

Downsampling (YCbCr444 to YCbCr422)

In cases where input signals are in YCbCr 4:4:4 format and output is selected as YCbCr 4:2:2, this

block is enabled to do the downsampling.

HDCP engine (HDCP)

The HDCP engine in IT66121 handles all the processing required by HDCP mechanism in hardware.

Software intervention is not necessary except checking for revocation. Preprogrammed HDCP keys

are also embedded in IT66121. Users need not worry about the purchasing and management of the

HDCP keys.

TMDS driver (TMDS Driver)

The final stop of the data processing flow is TMDS serializer. The TMDS driver serializes the input

parallel data and drive out the proper electrical signals to the HDMI cable. The output current level is

controlled through connecting a precision resistor of proper value to Pin 20 (REXT).

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Nov-2011 Rev:0.99 9/39

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