SAA7114HV2 NXP Semiconductors, SAA7114HV2 Datasheet - Page 71
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SAA7114HV2
Manufacturer Part Number
SAA7114HV2
Description
Manufacturer
NXP Semiconductors
Datasheet
1.SAA7114HV2.pdf
(144 pages)
Specifications of SAA7114HV2
Lead Free Status / Rohs Status
Compliant
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Philips Semiconductors
SAA7114_3
Product data sheet
Available formats are as follows:
For handshake with the receiving VGA controller, or other memory or bus interface
circuitry, F, H and V reference signals and programmable FIFO flags are provided. The
information is provided on pins IGP0, IGP1, IGPH and IGPV. The functionality on these
pins is controlled via subaddresses 84h and 85h.
VBI data is collected over an entire line in its own FIFO, and transferred as an
uninterrupted block of bytes. Decoded VBI data can be signed by the VBI flag on pin IGP0
or IGP1.
As scaled video data and decoded VBI data may come from different and asynchronous
sources, an arbitration scheme is needed. Normally the VBI data slicer has priority.
The image port consists of the pins and/or signals, as listed in
For pin constrained applications, or interfaces, the relevant timing and data reference
signals can also get encoded into the data stream. Therefore the corresponding pins do
not need to be connected. The minimum image port configuration requires 9 pins only, i.e.
8 pins for data including codes, and 1 pin for clock or gated clock. The inserted codes are
defined in close relationship to the ITU-R BT.656 (D1) recommendation, where possible.
The following deviations from “ITU 656 recommendation” are implemented at the
SAA7114 image port interface:
•
•
•
•
•
•
•
•
•
•
•
Y-C
Y-C
Raw samples
Decoded VBI data
SAV and EAV codes are only present in those lines, where data is to be transferred,
i.e. active video lines, or VBI raw samples, no codes for empty lines
There may be more or less than 720 pixels between SAV and EAV
Data content and the number of clock cycles during horizontal and vertical blanking is
undefined, and may not be constant
Data stream may be interleaved with not-valid data codes, 00h, but SAV and EAV
4-byte codes are not interleaved with not-valid data codes
There may be an irregular pattern of not-valid data, or IDQ, and as a result, C
is not in a fixed phase to a regular clock divider
VBI raw sample streams are enveloped with SAV and EAV, like normal video
Decoded VBI data is transported as Ancillary (ANC) data, two modes:
– Direct decoded VBI data bytes (8-bit) are directly placed in the ANC data field,
– Recoded VBI data bytes (8-bit) directly placed in ANC data field, 00h and FFh
00h and FFh codes may appear in data block (violation to ITU-R BT.656)
codes will be recoded to even parity codes 03h and FCh to suppress invalid
ITU-R BT.656 codes
B
B
-C
-C
R
R
4 : 2 : 2
4 : 1 : 1
Rev. 03 — 17 January 2006
PAL/NTSC/SECAM video decoder
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Table
33.
SAA7114
B
-Y-C
71 of 144
R
-Y
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