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| 型號： | EVAL-ADV7179EBZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 22/52頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVALUATION FOR ADV7179 |
| 設計資源： | ADV7174/79 Eval Brd Docs |
| 標準包裝： | 1 |
| 主要目的： | 視頻，視頻處理 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | ADV7179 |
| 主要屬性： | NTSC/PAL 數(shù)字視頻編碼器 |
| 次要屬性： | I²C 接口 |
| 已供物品： | 板 |
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ADV7174/ADV7179
Rev. B | Page 29 of 52
MODE REGISTER 1 (MR1)
Bits:
MR17–MR10
Address:
SR4–SR0 = 01H
Figure 39 shows the various operations under the control of Mode Register 1. This register can be read from as well as written to.
MR11
MR10
MR17
MR12
MR13
MR15
MR16
MR14
CLOSED CAPTIONING
FIELD SELECTION
0
NO DATA OUT
0
ODD FIELD ONLY
1
EVEN FIELD ONLY
1
0
1
0
1
DATA OUT
(BOTH FIELDS)
MR12 MR11
DAC A
CONTROL
0
NORMAL
1
POWER-DOWN
MR16
RESERVED
DAC C
CONTROL
MR13
DAC B
CONTROL
MR15
INTERLACE
CONTROL
0
INTERLACED
1
NONINTERLACED
MR10
COLOR BAR
CONTROL
0
DISABLE
1
ENABLE
MR17
0
NORMAL
1
POWER-DOWN
0
NORMAL
1
POWER-DOWN
1 SHOULD BE
WRITTEN TO
THIS BIT
02980-A
-039
Figure 39. Mode Register 1
Table 10. MR1 Bit Description
Bit Name
Bit No.
Description
Interlace Control
MR10
This bit is used to set up the output to interlaced or noninterlaced mode. Power-down mode
is relevant only when the part is in composite video mode.
Closed Captioning Field
Selection
MR12–MR11
These bits control the fields on which closed captioning data is displayed; closed captioning
information can be displayed on an odd field, even field, or both fields.
DAC Control
MR16–MR15
and MR13
These bits can be used to power down the DACs. Power-down can be used to reduce the
power consumption of the ADV7174/ADV7179 if any of the DACs are not required in the
application.
Reserved
MR14
A Logic 1 must be written to this register.
Color Bar Control
MR17
This bit can be used to generate and output an internal color bar test pattern. The color bar
configuration is 100/7.5/75/7.5 for NTSC and 100/0/75/0 for PAL. It is important to note that
when color bars are enabled, the ADV7174/ADV7179 is configured in a master timing mode.
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