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Display Subsystem Register Manual
Bits
Field Name
Description
Type
Reset
4:0
SLINE
Selects the line where closed caption or extended service data are
RW
0x15
encoded. The value of the SLINE[4:0] bit field depends on the video
standard:
PAL mode: Because there is a one-line offset, program the desired
line number – 1.
To activate the closed caption on line 21 (0x15), program the value
0x15 – 1 = 0x14. The default value is 0x15 + 1 = 0x16 (line 22).
NTSC mode: Because there is a four-line offset, program the desired
line number – 4.
To activate the closed caption on line 21 (0x15), program the value
0x15 – 4 = 0x11. The default value is 0x15 + 4 = 0x19 (line 25).
Table 7-323. Register Call Summary for Register VENC_LN_SEL
Display Subsystem Functional Description
•
:
Display Subsystem Basic Programming Model
•
Video Encoder Register Settings
Display Subsystem Register Manual
•
Video Encoder Register Mapping Summary
:
•
Table 7-324. VENC_L21_WC_CTL
Address Offset
0x5C
Physical address
0x4805 0C5C
Instance
VENC
Description
VENC L21 & WC_CTL registers
Type
RW
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
Reserved
LINE
Reserved
L21EN
INV
EVEN_ODD_EN
Bits
Field Name
Description
Type
Reset
31:16
Reserved
Reserved. Read returns 0s.
RW
0x0000
15
INV
WSS inverter
RW
0
0x0:
No effect
0x1:
Invert WSS data
14:13
EVEN_ODD_EN
This bit controls the WSS encoding.
RW
0x0
0x0:
WSS encoding OFF
0x1:
Enables encoding in 1
st
field (odd field)
0x2:
Enables encoding in 2
nd
field (even field)
0x3:
Enables encoding in both fields
12:8
LINE
Selects the line where WSS data are encoded. The LINE[12:8] bit field
RW
0x14
value depends on the video standard:
PAL mode: There is an one line offset, so program the wanted line
number - 1. The recommended value is line 0x16 + 1 = 0x17 (23rd line).
The default value is 0x14 + 1 = 0x15 (line 21).
NTSC mode: There is a four line offset, so program the wanted line
number - 4. The recommended value is line 0x10 + 4 = 0x14 (20th line).
The default value is 0x14 + 4 = 0x18 (line 24).
7:2
Reserved
Reserved. Read returns 0s.
RW
0x00
1895
SWPU177N – December 2009 – Revised November 2010
Display Subsystem
Copyright © 2009–2010, Texas Instruments Incorporated