Mode 2; Figure 16: Adv8003 Mode 2 Configuration - Analog Devices ADV8003 Hardware Manual

2.1.3.

Mode 2

Mode 2 should be used if:
• Three separate output formats are required
• Additional processing (BNR, RNR, and so on) is required on the new output formats
• OSD is required on multiple outputs
• OSD and video scaling are to be kept separate
OSD rendered at a single set resolution: 720p OSD rendered at a single set resolution: 720p
Input Input
Exosd Exosd
Secondary: Secondary:
Muxing Muxing
24-bit 24-bit
Input Input
Formatting Formatting
Port Port
Video Video
480i Video 480i Video
36-bit 36-bit
from from
Input Input
Decoder Decoder Formatting, Formatting,
Port Port
CSC & ACE CSC & ACE
Serial Serial
Video Video
Formatting Formatting
RX RX
Mode 2 places the PVSP after the input block. The output from this is sent to the OSD which is in turn sent to the SVSP or PtoI converter.
This mode is very similar to mode 4, except that the OSD position has swapped with the PVSP. The primary reason is that, in this case,
the OSD data is not overlaid on the incoming video data and then scaled, but rather scaled and then overlaid. Scaling the video and OSD
separately may improve the quality of the video input to the SVSP. If it is possible, it is better to scale video and OSD separately and then
blend rather than scaling both together.
The example in Figure 16 takes a 480i video signal and scales this to 1080p. This is then overlaid with OSD data scaled to 1080p. This
example can generate three different output formats (720p, 1080i, and 1080p) as well as outputting the input SD standard of 480i.
Rev. B, August 2013
Mode 2 Mode 2
DDR2 Memory DDR2 Memory
Interface Interface
Build Build Scale Scale
(720p) (720p)
OSD OSD OSD OSD
Video Video Primary Primary
Muxing Muxing VSP VSP
Data Data
& CSC & CSC
Primary: Primary:
Data Data
(480i) (480i)
RX: RX:
Data Data
& CSC & CSC

Figure 16: ADV8003 Mode 2 Configuration

(1080p) (1080p)
OSD OSD Secondary Secondary
Blend Blend VSP VSP
(1080p) (1080p)
Progressive to Progressive to
Interlaced Interlaced
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ADV8003 Hardware Manual
HDMI HDMI
Tx1 Tx1
Output Output
Muxing Muxing
(720p) (720p)
HDMI HDMI
Tx2 Tx2
(1080i) (1080i)
HD HD
Encoder Encoder
(1080p) (1080p)
SD SD
(480i) (480i) Encoder Encoder
1080p(OSD) 1080p(OSD)
1080i(OSD) 1080i(OSD)
720p(OSD) 720p(OSD)
480i 480i