ADV8003 Hardware Manual
Rev. B, August 2013
89
Function
osd_blend_inp_sel[3:0]
Description
0x00
From Main TTL Input
0x01
From Secondary VSP/PtoI Converter
0x02
From Primary VSP
0x03
From OSD TTL Input
0x04
From RX Input
osd_blend_inp_2_sel[3:0]
, IO Map,
Address 0x1A08[3:0]
This signal is used to select the video to be blended on OSD channel 2.
Function
osd_blend_inp_2_sel[3:
0]
Description
0x00
From Main TTL Input
0x01
From Secondary VSP/PtoI Converter
0x02
From Primary VSP
0x03
From OSD TTL Input
0x04
From RX Input
For example, when using the ADV8003 in mode 3 (described in Section
2.1.4), the following register settings are needed to configure the
video data path:
1A 1A03 34; Output of OSD blend to HDMI Tx1, Output of Secondary VSP to HDMI Tx2
1A 1A04 30; Output of OSD blend to HD encoder, SD encoder not used.
1A 1A05 00; Input to ADV8003 to both Primary and Secondary VSP.
1A 1A06 02; Progressive to Interlaced converter not used, output from Primary VSP to OSD blend.
These four register writes configure the hardware blocks in the ADV8003 in mode 3. More registers will need to be configured depending
on the input and desired video standards.
2.2.2.
Digital Video Input
The ADV8003 has three means of receiving video: the video TTL input and the EXOSD TTL input which constitute the flexible 60-bit
TTL input port, and the Serial Video Rx. Each of the TTL inputs can be connected to one of the input channels – the primary input
channel or the secondary input channel. The Serial Video Rx is always connected to the RX input channel. Each channel features a
dedicated input formatter, color space converter (CSC) and dither block. The primary input channel also features an automatic contrast
enhancement (ACE) control. The ADV8003 input channels are illustrated in
and
Primary Input
Channel Output
Video TTL Input
EXOSD TTL Input
Data
Rotate
AV-Code
Detect
Up-dither
CSC
Contrast
Brightness
Saturation
ACE
48-bit to
24-bit
Conversion
EXOSD TTL Input
(OSD_IN[11:0] + P[35:0])
Video TTL Input +
Primary Input Channel
Figure 30: Video TTL Input Channel
Summary of Contents for ADV8003
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