Datasheet
1-Ch D1
8Bit@27MH z
8-Ch CIF + 1-Ch D 1
8Bit@108MHz
2-Ch D1/Multi-Ch CIF
Preview
DM6467
DaVinci HD
DVO_A_[7:0]
VPIF_A
I2C
H.264
DVO_D_[7:0]
DVO_A_[7:0]
VPIF_B
16 -C h CIF Recording
TVP5158
TVP5158
OCLK_P
OCLKN/CLKIN
OCLK_P
DVO _C_[7:0]
DVO_B_[7:0]
4-C h CIF
8Bit@ 27 MHz
8Bit@27MH z
8Bit@108MHz
DVO_A_[7:0]
I2C
DVO_D_[7:0]
DVO_A_[7:0]
TVP5158
TVP 5158
OCLK_P
OCLKN/CLKIN
OCLK_P
DVO _C_[7:0]
DVO_B_[7:0]
8Bit@ 27 MHz
8-C h CIF + 1 -C h D 1
4-C h CIF
1-Ch D1
VI N_1
VI N_2
VI N_3
VI N_4
VI N_1
VI N_2
VI N_3
VI N_4
VI N_1
VI N_2
VI N_3
VI N_4
VI N_1
VI N_2
VI N_3
VI N_4
TVP5158, TVP5157, TVP5156
SLES243G –JULY 2009–REVISED APRIL 2013
www.ti.com
Figure 3-14. Cascade Connection for 16-Ch CIF Recoding and 2-Ch D1/Multi-Ch CIF Preview
3.8.3.4 Hybrid Modes
The TVP5158 also supports multiplexing both scaled and unscaled data streams in the line-interleaved
mode. In these hybrid modes (4-Ch Half-D1 + 1-Ch D1, 4-Ch CIF + 1-Ch D1, and 8-Ch CIF + 1-Ch D1),
the D1 line is split into two equal-length half lines and then multiplexed with the other CIF lines. Therefore,
all video data is actually multiplexed by CIF line length. In these hybrid modes, the line cropping mode
affects both the scaled and unscaled data streams. The line cropping mode is controlled by bit 6 of I
2
C
register B1h.
3.8.3.5 Metadata Insertion for Line-Interleaved Mode
In the line-interleaved mode, the video data is rearranged on a line-by-line basis. There can be no
guaranteed output line order, because all analog video inputs are not synchronized. To be compatible with
general backend BT.656 decoder, the video data is encapsulated on TVP5158 output so that all input data
is preserved and output data is understandable to a BT.656 decoder.
To prevent confusion over image line count and vertical blanking appearing haphazardly, SAV/EAV codes
have FID and V data stripped and replaced with FID = V = 0. Because vertical blanking in the input is
being masked out, artificial vertical sync is inserted every encapsulated frame (a.k.a., super frame). Thus,
to the unaware BT.656 decoder, the stream appears to be progressive data with two lines of vertical
blanking. The default super-frame format and timing for each line-interleaved output format is shown in
Table 3-11.
28 Functional Description Copyright © 2009–2013, Texas Instruments Incorporated
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