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参数资料
| 型号： | EVAL-ADV7173EBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 27/60页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR ADV7173 |
| 标准包装： | 1 |
| 系列： | Advantiv® |
| 主要目的： | 视频，视频处理 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | ADV7173 |
| 主要属性： | NTSC/PAL 数字视频编码器 |
| 次要属性： | I²C 接口 |
| 已供物品： | 板 |
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REV. B
ADV7172/ADV7173
–33–
MODE REGISTER 7 MR7 (MR77–MR70)
(Address (SR4–SR0) = 07H)
Mode Register 7 is an 8-bit-wide register. Figure 51 shows the
various operations under the control of Mode Register 7.
MR7 BIT DESCRIPTION
Color Control Enable (MR70)
This bit is used to enable control of contrast and saturation of
color. If this bit is set (“1”), color controls are enabled; if this
bit is set (“0”), the color control features are disabled.
Luma Saturation Control (MR71)
When this bit is set (“1”), the luma signal will be clipped if it
reaches a limit that corresponds to an input luma value of
255 after scaling by the contrast control. This prevents the
chrominance component of the composite video signal being
clipped if the amplitude of the luma is too high. When this bit is
set (“0”), this control is disabled.
Hue Adjust Enable (MR72)
This bit is used to enable hue adjustment on the composite and
chroma output signals of the ADV7172/ADV7173. When this
bit is set (“1”), the hue of the color is adjusted by the phase
offset described in the Hue Control Register. When this bit is
set (“0”) hue adjustment is disabled.
Brightness Enable Control (MR73)
This bit is used to enable brightness control on the ADV7172/
ADV7173 by enabling the programmable “setup level” or ped-
estal described in the Brightness Control Register to be added to
the scaled Y data. When this bit is set (“1”), brightness control
is enabled. When this bit is set (“0”), brightness control is disabled.
Sharpness Response Enable (MR74)
This bit is used to enable the sharpness of the luminance signal
on the ADV7172/ADV7173 (MR04–MR02 = 100). The various
responses of the filter are determined by the Sharpness Response
Register. When this bit is set (“1”) the luma response is altered
by the amount described in the Sharpness Response Register.
When this bit is set (“0”), the sharpness control is disabled (see
Figures 19, 20, and 21 for luma signal responses).
CSO_HSO Output Control (MR75)
This bit is used to determine whether
HSO or CSO TTL out-
put signal is output at the
CSO_HSO pin. If this bit is set (“1”),
then the
CSO TTL signal is output. If this bit is set (“0”), then
the
HSO TTL signal is output.
Reserved (MR77–MR76)
A Logic “0” must be written to these bits.
MR71
MR70
MR77
MR72
MR74
MR73
MR75
MR76
MR77 MR76
ZERO SHOULD
BE WRITTEN TO
THESE BITS
CSO_HSO
OUTPUT CONTROL
0
HSO OUT
1
CSO OUT
MR75
BRIGHTNESS
ENABLE CONTROL
0
DISABLE
1
ENABLE
MR73
LUMA SATURATION
CONTROL
0
DISABLE
1
ENABLE
MR71
SHARPNESS
RESPONSE ENABLE
0
DISABLE
1
ENABLE
MR74
HUE ADJUST
ENABLE
0
DISABLE
1
ENABLE
MR72
COLOR CONTROL
ENABLE
0
DISABLE
1
ENABLE
MR70
Figure 51. Mode Register 7 (MR7)
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