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Registers
862
SPRUHI7A – December 2012 – Revised June 2016
Copyright © 2012–2016, Texas Instruments Incorporated
High-Definition Video Processing Subsystem (HDVPSS)
1.3.12.44 SD_VENC_l21ctl Register (offset = 124h) [reset = 0h]
SD_VENC_l21ctl is shown in
and described in
.
Line 21 Control
Figure 1-539. SD_VENC_l21ctl Register
31
30
29
28
27
26
25
24
Reserved
R-0h
23
22
21
20
19
18
17
16
Reserved
R-0h
15
14
13
12
11
10
9
8
L21DF
R/W-0h
7
6
5
4
3
2
1
0
Reserved
L21EN
R-0h
R/W-0h
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit;
-n
= value after reset
Table 1-455. SD_VENC_l21ctl Register Field Descriptions
Bit
Field
Type
Reset
Description
31-16
Reserved
R
0h
15-8
L21DF
R/W
0h
Closed caption default data register. When the caption data register
(L21DO or L21DE) is not updated before the caption data
transmission timing for the corresponding field.. the ASCII code
specified by this register is automatically transmitted for closed
caption data.
7-2
Reserved
R
0h
1-0
L21EN
R/W
0h
Closed caption field select. Specify the fields on which closed
captioning is enabled. Closed caption data is transmitted on the line
21 for odd field and the line 284 for even field (line 22 and 335 for
PAL). 0: No data output 1: Odd field 2: Even field 3: Both fields