ADV7183AKST Analog Devices Inc, ADV7183AKST Datasheet - Page 56

no-image

ADV7183AKST

Manufacturer Part Number
ADV7183AKST
Description
IC VIDEO DECODER NTSC 80-LQFP
Manufacturer
Analog Devices Inc
Type
Video Decoderr
Datasheet

Specifications of ADV7183AKST

Applications
Projectors, Recorders, Security
Voltage - Supply, Analog
3.15 V ~ 3.45 V
Voltage - Supply, Digital
1.65 V ~ 2 V
Mounting Type
Surface Mount
Package / Case
80-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ADV7183AKST
Manufacturer:
AD
Quantity:
1 831
Part Number:
ADV7183AKST
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Company:
Part Number:
ADV7183AKST
Quantity:
2 000
Part Number:
ADV7183AKSTZ
Manufacturer:
ON
Quantity:
2 876
ADV7183A
Table 151. Data Byte Allocation
1
1
0
0
Notes
DID. The data identification value is 0x140 (10-bit value).
Care has been taken that in 8-bit systems, the 2 LSBs do
not carry vital information.
EP and !EP. The EP bit is set to ensure even parity on the
data-word D[8:0]. Even parity means there will always be
an even number of 1s within the D[8:0] bit arrangement.
This includes the EP bit. !EP describes the logic inverse of
EP and is output on D[9]. The !EP is output to ensure that
the reserved codes of 00 and FF cannot happen.
EF. Even field identifier. EF = 1 indicates that the data was
recovered from a video line on an even field.
2X. This bit indicates whether the data sliced was in
Gemstar 1× or 2× format. A high indicates 2× format.
line[3:0]. This entry provides a code that is unique for each
of the possible 16 source lines of video from which
Gemstar data may have been retrieved. Refer to Table 163
and Table 164.
DC[1:0]. Data count value. The number of user data-words
(UDW) in the packet divided by 4. The number of user
data-words in any packet must be an integral number of 4.
Padding is required at the end, if necessary. (Requirement
as set in ITU-R BT.1364.) See Table 151.
The 2X bit determines whether the raw information
retrieved from the video line was 2 or 4 bytes. The state of
the GDECAD bit affects whether the bytes are transmitted
straight (that is, two bytes transmitted as two bytes) or
whether they are split into nibbles (that is, two bytes
Raw Information Bytes
Retrieved from the Video Line
4
4
2
2
GDECAD
0
1
0
1
Rev. B | Page 56 of 104
User Data-Words
(Including Padding)
8
4
4
4
Table 152 to Table 157 outline the possible data packages.
Gemstar 2× Format, Half-Byte Output Mode
Half-byte output mode is selected by setting CDECAD = 0; full-
byte output mode is selected by setting CDECAD = 1. See the
GDECAD Gemstar Decode Ancillary Data Format,
Address 0x4C [0] section.
Gemstar 1× Format
Half-byte output mode is selected by setting CDECAD = 0, full-
byte output mode is selected by setting CDECAD = 1. See the
GDECAD Gemstar Decode Ancillary Data Format,
Address 0x4C [0] section.
transmitted as four half bytes). Padding bytes are then
added where necessary.
CS[8:2]. The checksum is provided to determine the
integrity of the ancillary data packet. It is calculated by
summing up D[8:2] of DID, SDID, the Data Count byte,
and all UDWs, and ignoring any overflow during the
summation. Since all data bytes that are used to calculate
the checksum have their 2 LSBs set to 0, the CS[1:0] bits
are also always 0.
!CS[8] describes the logic inversion of CS[8]. The value
!CS[8] is included in the checksum entry of the data packet
to ensure that the reserved values of 0x00 and 0xFF do not
occur.
Padding Bytes
0
0
0
2
DC[1:0]
10
01
01
01

Related parts for ADV7183AKST