Analog Devices ADV8003 Hardware Manual Download

Page: 69 / 440

ADV8003 Hardware Manual

Rev. B, August 2013

ADV8003 TOP LEVEL CONTROL

36/48-
bit
Video
Port

24-bit
Input
Port

Primary

VSP

Secondary
VSP

Output
Muxing

HDMI
Tx2

HDMI
Tx1

HD
Encoder

SD
Encoder

DDR2 Memory
Interface

Progressive to
Interlaced

ADV8003

36-bit

Video

Port

Serial
Video�
RX

24-bit
Input
Port

Primary

V
- Deinterlacer
- Scaler
- Video enhance

Secondary
V
-Scaler

Output
Muxing

HDMI
Tx2

HDMI
Tx1

HD
Encoder

SD
Encoder

DDR2 Memory
Interface

Progressive to
Interlaced

ADV8003

Colour

Space
Conversi

Colour

Space
Conversio

Data

Formatting,

CSC &

ACE

Col

Spa

Con

Data

Formatting

& CSC

Data

Formatting

& CSC

Input

Muxing

Output
Muxing

Interim
Muxing

OSD Core
- OSD scaler
- External OSD
- Internal OSD

VSP - YCbCr 4:4:4 Input and Output

Figure 14: ADV8003 Simplified Block Diagram

A simplified block diagram of the ADV8003 can be seen in

Figure 14

. Video can be routed through the ADV8003 in a number of ways, for

example, the OSD can be blended before the PVSP to display the OSD on all outputs, the OSD can be blended before the output to display
the OSD on a single output. This has been divided into several modes of operation which are recommended by Analog Devices. These
modes of operation are documented in

Section

2.1 and outline the most practical modes in which to configure the ADV8003.

The four main processing blocks of the ADV8003 are described as follows.

PVSP:

This is the main scaler of the ADV8003 and contains many of the signal processing functions. This block performs motion

adaptive de-interlacing as well as scaling, ACE, FRC, cadence detection, CUE correction, RNR, BNR and MNR. PVSP utilizes the external

DDR2 memory for such processes as FRC, de-interlacing and RNR. (Refer to Section

3.2

for more details on the PVSP.)

SVSP

: This is the secondary scaler in the ADV8003 and is useful when providing an additional output resolution. The input to this block

can only be progressive. This means an input format can only be connected to the SVSP if it is progressive or if it has been de-interlaced by

the PVSP block. (Refer to Section

3.3 for more details on the SVSP.)

OSD Blend:

This block overlays the generated OSD on the incoming video signal, from the Serial Video input lines or from the video

TTL port. This is determined by an alpha factor as to how transparent the OSD will be. Depending on the source of the OSD data (from
an external OSD solution or DDR2 memory), this is then synchronized with the incoming video signal. If the generated resolution is the
same as the video, the OSD is simply overlaid on the video. If both are at different resolutions, the OSD scaler will first scale the OSD data
to match the incoming video. (Refer to Section

for more details on the OSD.)

Progressive to Interlaced:

The ADV8003 has two progressive to interlaced (PtoI) blocks, one of these is included as part of the SVSP. The

second is a standalone block. The function of this block is exactly as named and can be used, for example, if the user was to convert an ED
format such as 480p to a HD format such as 1080i. The PtoI block would be required as part of this conversion. (Refer to Section

3.2.3

and

Section

3.3.3

for more details on the PtoI hardware blocks.)