UG-707
ADV8005 Hardware Reference Manual
2.1.12.
Mode 11 – PIP (External OSD Greater Than or Equal To 720p)
Mode 11 should be used if:
•
OSD data is input via the EXOSD TTL 24-bit input port
•
OSD data input via the EXOSD TTL 24-bit input port is greater than or equal to 720p
Mode 11 is used to support the external input of either part of or the complete OSD from another device, for example, an MCU. With support
for HS, VS, DE and CLK, the external OSD input can also be used to input video data. Using mode 10, the external OSD bus can be used to
support picture in picture (PiP) with two video streams. The difference between mode 10 and mode 11 is the resolution of the incoming video
– mode 11 can support incoming video of 720p or greater.
In this mode, the input from EXOSD TTL 24-bit input port is routed to the SVSP where it is scaled before being written into DDR2 memory.
The OSD core then reads back the data as one OSD region and blends this region with input video.
Figure 21:
Mode 11 Configuration
from
Decoder
OSD
Blend
Build
OSD
Scale
OSD
Secondary
VSP
Output
Muxing
Mode 11 - PiP (External OSD
≥ 720p)
DDR2 Memory
Interface
OSD rendered at a single set resolution: 480p
(480p)
(1080p)
(1080p)
1080p(PiP)
1080p(PiP)
1080p(PiP)
(1080p)
Primary
VSP
HDMI
Tx2
HDMI
Tx1
HD
Encoder
SD
Encoder
720p Video
from
Transceiver
(720p)
(720p)
(480p)
Video
36-bit
Input
Port
Exosd
24-bit
Input
Port
Serial
Video
RX
Input
Muxing
Secondary:
Data
Formatting
& CSC
Primary:
Data
Formatting,
CSC & ACE
RX:
Data
Formatting
& CSC
Video
Muxing
from
Decoder
OSD
Blend
Build
OSD
Scale
OSD
Secondary
VSP
Output
Muxing
Mode 11 - PiP (External OSD
≥ 720p)
DDR2 Memory
Interface
OSD rendered at a single set resolution: 480p
(480p)
(1080p)
(1080p)
1080p(PiP)
1080p(PiP)
1080p(PiP)
(1080p)
Primary
VSP
HDMI
Tx2
HDMI
Tx1
HD
Encoder
SD
Encoder
720p Video
from
Transceiver
(720p)
(720p)
(480p)
Video
36-bit
Input
Port
Exosd
24-bit
Input
Port
Serial
Video
RX
Input
Muxing
Secondary:
Data
Formatting
& CSC
Primary:
Data
Formatting,
CSC & ACE
RX:
Data
Formatting
& CSC
Video
Muxing
720p Video
Rev. A | Page 38 of 317
