ADV7162KS140 Analog Devices Inc, ADV7162KS140 Datasheet - Page 19

• Manufacturer Part Number: ADV7162KS140
• Description: IC DAC VIDEO COLOR 96BIT 160MQFP
• Manufacturer: Analog Devices Inc
• Type: Video DACr

Specifications of ADV7162KS140

• Rohs Status: RoHS non-compliant
• Applications: HDTV
• Mounting Type: Surface Mount
• Package / Case: 160-MQFP, 160-PQFP

REV. 0
COLOR VIDEO MODES
The ADV7160/ADV7162 supports a number of color video
modes all at the maximum video rate.
Command bits CR27–CR24 of Command Register 2 along with
bit MR11 of Mode Register 1 determine the color mode. Seven
color modes use the Color Palette, and three of them bypass the
palette and control the DACs directly.
24-Bit True Color
(CR27, CR26, CR25, CR24 = 1, 1, 1, 0)
The part is set to 24-bit/30-bit “Gamma” True-Color operation
with MR11 set to Logic “1” and direct 24-bit True-Color op-
eration with MR11 set to Logic “0.” The pixel port accepts 24
bits of color data which is directly mapped to the Look-Up
Table RAM. With MR11 set to Logic “1,” the Look-Up Table
is configured as a 256 location by 30 bits deep RAM (10 bits
each for Red, Green and Blue), the RAM is preloaded with a
user determined, nonlinear function, such as a gamma correc-
tion curve and the output of the RAM drives the DACs with
30-bit data. With MR11 set to Logic “0,” the Look-Up Table is
configured as a 256 location by 24 bits deep RAM (8 bits each
for Red, Green and Blue), the RAM is preloaded with a linear
function and the output of the RAM drives the DACs with 24-
bit data.
16-Bit True Color
(CR27, CR26, CR25, CR24 = 1, 0, 1, 1)
The part is set to 16-bit True-Color operation. The pixel port
accepts 16 bits of color data which is mapped to the 5 LSBs of
each of the red and blue palettes of the Look-Up-Table RAM,
and 6 LSBs of the green palette of the Look-Up-Table RAM.
With MR11 set to Logic “1,” the Look-Up Table is configured
as a 64 location by 30 bits deep RAM (10 bits each for Red,
Green and Blue) and the output of the RAM drives the DACs
with 30-Bit data, allowing the display of 16-bit Gamma-
Corrected True-Color Images. With MR11 set to Logic “0,”
the Look-Up Table is configured as a 64 location by 24 bits
deep RAM (8 bits each for Red, Green and Blue); and the out-
put of the RAM drives the DACs with 24-bit data, allowing the
display of 16-bit True-Color Images.
15-Bit True Color
(CR27, CR26, CR25, CR24 = 1, 1, 0, 0 or 1, 1, 0, 1)
The part is set to 15-bit True-Color operation. The pixel port
accepts 15 bits of color data which is mapped to the 5 LSBs of
each of the red, green and blue palettes of the Look-Up Table
RAM. With MR11 set to Logic “1,” the Look-Up Table is con-
figured as a 32 location by 30 bits deep RAM (10 bits each for
Red, Green and Blue) and the output of the RAM drives the
24-BIT COLOR
DATA
Figure 23. 24-Bit to 30-Bit True-Color Configuration
8
8
8
LOOK-UP TABLE
24-BIT TO 30-BIT
256 x 10
RED
256 x 10
GREEN
256 x 10
BLUE
30-BIT COLOR
DATA
10
10
10
GREEN
10-BIT
10-BIT
10-BIT
BLUE
DAC
DAC
RED
DAC
ANALOG VIDEO
OUTPUTS
BLUE
OUT
RED
OUT
GREEN
OUT
–19–
DACs with 30-bit data, allowing the display of 15-bit Gamma-
Corrected True-Color Images. With MR11 set to Logic “0,”
the Look-Up Table is configured as a 32 location by 24 bits
deep RAM (8 bits each for Red, Green and Blue) and the out-
put of the RAM drives the DACs with 24-bit data, allowing the
display of 15-bit True-Color Images.
8-Bit Pseudo Color
(CR27, CR26, CR25, CR24 = 0, 0, 0, 0 or 0, 1, 0, 0 or 1, 0, 0, 0)
This mode sets the part into 8-bit Pseudo-Color operation. The
pixel port accepts 8 bits of pixel data, from either the red, blue
or green channel. With MR11 set to Logic “1,” a 30-bit word is
indexed in the Look-Up Table RAM. The Look-Up Table is
configured as a 256 location by 30 bits deep RAM (10 bits each
for Red, Green and Blue). The output of the RAM drives the
DACs with 30-bit data. With MR11 set to Logic “0,” a 24-Bit
word is indexed in the Look-Up Table RAM. The Look-Up
Table is configured as a 256 location by 24 bits deep RAM (8
bits each for Red, Green and Blue). The output of the RAM
drives the DACs with 24-bit data. This mode allows for the dis-
play of 256 simultaneous colors out of a total palette of millions
of addressable colors.
PIXEL PORT MAPPING
The pixel data to the ADV7160/ADV7162 is automatically
mapped in the parts pixel port as determined by the pixel data
mode programmed (Bits CR27–CR24 of Command Register 2).
Pixel data in the 24-bit True-Color modes is directly mapped to
the 24 color inputs R7–R0, G7–G0 and B7–B0.
There is one mode of operation for 16-bit True Color. Data is
input to the device over the red and green color ports (R7–R0
and G7–G0) and is internally mapped to LUT Locations 0–63
according to Figure 26. (Note: Data on unused pixel inputs is
ignored.)
.
8-BIT PIXEL
DATA
Figure 25. 8-Bit to 30-Bit Pseudo-Color Configuration
15-BIT COLOR
DATA
Figure 24. 15-Bit to 24-Bit True-Color Configuration
8
5
5
5
LOOK-UP TABLE
8-BIT TO 30-BIT
LOOK-UP TABLE
15-BIT TO 24-BIT
256 x 10
32 x 8
RED
RED
256 x 10
GREEN
GREEN
32 x 8
256 x 10
BLUE
BLUE
32 x 8
ADV7160/ADV7162
24-BIT COLOR
DATA
30-BIT COLOR
DATA
8
8
8
10
10
10
GREEN
BLUE
8-BIT
8-BIT
8-BIT
RED
DAC
DAC
DAC
GREEN
10-BIT
10-BIT
10-BIT
BLUE
DAC
RED
DAC
DAC
ANALOG VIDEO
OUTPUTS
ANALOG VIDEO
OUTPUTS
RED
OUT
GREEN
OUT
BLUE
OUT
RED
OUT
GREEN
OUT
BLUE
OUT