ADV7188 Datasheet, PDF (84/112 Pages) Analog Devices – Multiformat SDTV Video Decoder with Fast Switch Overlay Support

ADV7188
Address Register
0x3A
ADC Control
0x3D
Manual Window
Control
0x41
Resample Control
0x48
Gemstar Control 1
0x49
Gemstar Control 2
0x4A
0x4B
0x4C
Gemstar Control 3
Gemstar Control 4
Gemstar Control 5
0x4D
CTI DNR Control 1
0x4E
CTI DNR Control 2
0x50
CTI DNR Control 4
0x51
Lock Count
Bit Description
PWRDN_ADC_3. Enables power-down of
ADC3.
PWRDN_ADC_2. Enables power-down of
ADC2.
PWRDN_ADC_1. Enables power-down of
ADC1.
PWRDN_ADC_0. Enables power-down of
ADC0.
Reserved.
Reserved.
CKILLTHR[2:0].
Reserved.
Reserved.
SFL_INV. Controls the behavior of the PAL
switch bit.
Reserved.
GDECEL[15:8]. See the Comments column.
GDECEL[7:0]. See above.
GDECOL[15:8]. See the Comments column.
GDECOL[7:0]. See above.
GDECAD. Controls the manner in which
decoded Gemstar data is inserted into the
horizontal blanking period.
Reserved.
CTI_EN. CTI enable
CTI_AB_EN. Enables the mixing of the
transient improved chroma with the original
signal.
CTI_AB[1:0]. Controls the behavior of the
alpha-blend circuitry.
Reserved.
DNR_EN. Enable or bypass the DNR block.
Reserved.
CTI_CTH[7:0]. Specifies how big the
amplitude step must be to be steepened by
the CTI block.
DNR_TH[7:0]. Specifies the maximum edge
that is interpreted as noise and is therefore
blanked.
CIL[2:0]. Count-into-lock determines the
number of lines the system must remain in
lock before showing a locked status.
Bit
7 6 5 4 3 2 1 0 Comments
Notes
10
Adapts 5 lines – 3 lines (3 taps)
11
Adapts 5 lines – 4 lines (4 taps)
0 ADC3 normal operation
1 Power down ADC3
0 ADC2 normal operation
1 Power down ADC2
0
ADC1 normal operation
1
Power down ADC1
0
ADC0 normal operation
1
Power down ADC0
0001
Set as default
0 0 1 1 Set to default
000
001
010
Kill at 0.5%
Kill at 1.5%
Kill at 2.5%
CKE = 1 enables the color kill function
and must be enabled for
CKILLTHR[2:0] to take effect.
011
Kill at 4%
100
Kill at 8.5%
101
Kill at 16%
110
Kill at 32%
111
Reserved
0
Set to default
0 0 0 0 0 1 Set to default
0
SFL compatible with
ADV7190/ADV7191/ ADV7194
encoders
1
SFL compatible with
ADV717x/ADV7173x encoders
0
Set to default
0 0 0 0 0 0 0 0 GDECEL[15:0]. 16 individual
LSB = Line 10; MSB = Line 25
0 0 0 0 0 0 0 0 ^{enable bits that select the lines of} Default = Do not check for Gemstar-
video (even field Lines 10–25) that _{compatible data on any lines [10–25]}
the decoder checks for Gemstar- _{in even fields}
compatible data.
0 0 0 0 0 0 0 0 GDECOL[15:0]. 16 individual
enable bits that select the lines of
0
0
0
0
0
0
0
0
video (odd field Lines 10–25) that
the decoder checks for Gemstar-
compatible data.
LSB = Line 10; MSB = Line 25
Default = Do not check for Gemstar-
compatible data on any lines [10–25]
in odd fields
0 Split data into half byte
To avoid 00/FF code.
1 Output in straight 8-bit format
x x x x 0 0 0 Undefined
0 Disable CTI
1 Enable CTI
0 Disable CTI alpha blender
1 Enable CTI alpha blender
00
Sharpest mixing
01
Sharp mixing
10
Smooth
11
Smoothest
0
Set to default
0
Bypass the DNR block
1
Enable the DNR block
11
Set to default
0 0 0 0 1 0 0 0 Set to 0x04 for A/V input; set to
0x0A for tuner input
00001000
0 0 0 1 line of video
0 0 1 2 lines of video
0 1 0 5 lines of video
0 1 1 10 lines of video
Rev. 0 | Page 84 of 112