ADV7152 Datasheet, PDF (1/32 Pages) Analog Devices – CMOS 220 MHz True-Color Graphics Triple 10-Bit Video RAM-DAC

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CMOS 220 MHz True-Color Graphics
Triple 10-Bit Video RAM-DAC
ADV7152
FEATURES
APPLICATIONS
220 MHz, 24-Bit (30-Bit Gamma Corrected) True Color
High Resolution, True Color Graphics
Triple 10-Bit “Gamma Correcting” D/A Converters
Professional Color Prepress Imaging
Triple 256 ؋ 10 (256 ؋ 30) Color Palette RAM
On-Chip Clock Control Circuit
GENERAL DESCRIPTION
Palette Priority Select Registers
The ADV7152 (ADV^®) is a complete analog output, Video
RS-343A/RS-170 Compatible Analog Outputs
RAM-DAC on a single CMOS monolithic chip. The part is spe-
TTL Compatible Digital Inputs
cifically designed for use in high performance, color graphics
Standard MPU l/O Interface
workstations. The ADV7152 integrates a number of graphic
10-Bit Parallel Structure
functions onto one device allowing 24-bit direct True-Color op-
8+2 Byte Structure
eration at the maximum screen update rate of 220 MHz. The
Programmable Pixel Port: 24-Bit and 8-Bit (Pseudo)
ADV7152 implements 30-bit True Color in 24-bit frame buffer
Pixel Data Serializer
designs. The part also supports other modes, including 15-bit
Multiplexed Pixel Input Ports; 1:1, 2:1
True Color and 8-bit Pseudo or Indexed Color. Either the Red,
+5 V CMOS Monolithic Construction
Green or Blue input pixel ports can be used for Pseudo Color.
100-Lead Plastic Quad Flatpack (QFP)
Thermally Enhanced to Achieve ␪_JC < 1.0؇C/W
The device consists of three, high speed, 10-bit, video D/A con-
verters (RGB), three 256 Ï« 10 (one 256 Ï« 30) color look-up
MODES OF OPERATION
tables, palette priority selects, a pixel input data multiplexer/
24-Bit True Color (30-Bit Gamma Corrected)
serializer and a clock generator/divider circuit. The ADV7152
@ 220 MHz
implements 1:1 and 2:1 pixel data multiplexing. The onboard
@ 170 MHz
palette priority select inputs enable multiple palette devices to
@ 135 MHz
be connected together for use in multipalette and window
@ 110 MHz
(Continued on page 10)
@ 85 MHz
8-Bit Pseudo Color
ADV is a registered trademark of Analog Devices, Inc.
15-Bit True Color
FUNCTIONAL BLOCK DIAGRAM
VAA
256-COLOR/GAMMA
PALETTE RAM
ADV7152
RED (R0–R7),
A
GREEN (G0–G7),
BLUE (B0–B7)
COLOR DATA
B
PALETTE
SELECTS
(PS0, PS1)
LOADIN
LOADOUT
PRGCKOUT
SCKIN
SCKOUT
SYNC
BLANK
CLOCK
CLOCK
24
P 48
8
I
MUX
8
X
24
E
2:1
8
L
P
O
4
R
T
4
MUX
2:1
2
CLOCK CONTROL
CLOCK DIVIDE
&
SYNCHRONIZATION
CIRCUIT
÷32, ÷16, ÷8, ÷4, ÷2
ADDRESS
REGISTER
ADDR
(A0-–A15)
MODE
REGISTER
(MR1)
ECL TO CMOS
RED
10
256 x 10
GREEN
10
256 x 10
BLUE
10
256 x 10
10-BIT
RED DAC
10-BIT
GREEN DAC
10-BIT
BLUE DAC
CONTROL REGISTERS
PIXEL MASK
REGISTER
TEST
REGISTERS
COMMAND
REGISTERS
(CR1-CR3)
ID
REGISTER
REVISION
REGISTER
SYNC
OUTPUT
DATA TO
PALETTES
VOLTAGE
REFERENCE
CIRCUIT
30 _{COLOR REGISTERS}
RED
GREEN
BLUE
REGISTER REGISTER REGISTER
MPU PORT
10 (8+2)
IOR
IOR
IOG
IOG
IOB
IOB
IPLL
SYNCOUT
VREF
RSET
COMP
REV. B
CE R/W C0 C1
D9 – D0
GND
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
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