TVP5160
www.ti.com
SLES135E–FEBRUARY 2005–REVISED APRIL 2011
Table 2-9. Supported VBI System (continued)
VBI SYSTEM
STANDARD
NTSC
NTSC
Any
LINE NUMBER
NUMBER OF BYTES
2
Gemstar EPG 1×
Gemstar EPG 2×
User
5 with frame byte
Programmable
20 bits
Programmable
CGMS-A packet A
CGMS-A packet B
480p
41
40
480p
16 bytes
2.10.1 VBI FIFO and Ancillary Data in Video Stream
Sliced VBI data can be output as ancillary data in the video stream in ITU-R BT.656 mode. VBI data is
output on the Y[9:2] terminals during the horizontal blanking period following the line from which the data
was retrieved. Table 2-10 shows the header format and sequence of the ancillary data inserted into the
video stream. This format also stores any VBI data into the FIFO. The size of the FIFO is 512 bytes.
Therefore, the FIFO can store up to 9 lines of teletext data according to the WSTB standard.
Table 2-10. Ancillary Data Format and Sequence
BYTE NO. Y7(MSB)
Y6
0
Y5
0
Y4
0
Y3
0
Y2
0
Y1
0
Y0 (LSB)
DESCRIPTION
0
1
0
1
0
1
Ancillary data preamble
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
3
NEP
NEP
NEP
EP
EP
EP
0
1
0
DID2
F2
N2
DID1
F1
N1
DID0
F0
N0
Data ID (DID)
4
F5
N5
F4
N4
F3
N3
Secondary data ID (SDID)
Number of 32 bit data (NN)
Internal Data ID0 (IDID0)
Internal Data ID1 (IDID1)
5
6
Video line # [7:0]
7
0
0
0
Data error Match #1 Match #2
Video line # [9:8]
8
Sample 1
Sample 2
Sample 3
Sample 4
Data byte
Data byte
Data byte
Data byte
1st word
9
10
11
.
.
.
.
.
.
Sample m-1
Sample m
CS[7:0]
Data byte
Data byte
Checksum
Fill byte
Nth word
4N+5
4N+6
4N+7
0
0
0
0
0
0
0
0
EP:
Even parity for Y5–Y0
NEP:
DID:
Negated even parity
91h: Sliced data of VBI lines of first field
53h: Sliced data of line 24 to end of first field
55h: Sliced data of VBI lines of second field
97h: Sliced data of line 24 to end of second field
SDID:
NN:
This field holds the data format taken from the line mode register bits [5:0] of the
corresponding line.
Number of Dwords beginning with byte 8 through 4N+7. Note this value is the number of
Dwords where each Dword is 4 bytes.
IDID0:
Transaction video line number [7:0]
Copyright © 2005–2011, Texas Instruments Incorporated
Functional Description
35
Submit Documentation Feedback
focus.ti.com: TVP5160
TI [ TEXAS INSTRUMENTS ]
