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參數(shù)資料
| 型號： | TLC34075A-66 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Color-Palette(66MHz,視頻接口調(diào)色器) |
| 中文描述： | 顏色調(diào)色板（66MHz的，視頻接口調(diào)色器） |
| 文件頁數(shù)： | 7/53頁 |
| 文件大?。?/td> | 394K |
| 代理商： | TLC34075A-66 |
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1-1
1 Introduction
The TLC34075A Video Interface Palette (VIP) is designed to provide lower system cost with a higher level
of integration by incorporating all the high-speed timing, synchronizing, and multiplexing logic usually
associated with graphics systems into one device, thus greatly reducing chip count. Since all high-speed
signals (excluding the clock source) are contained on-chip, RF noise considerations are simplified.
Maximum flexibility is provided through the pixel multiplexing scheme, which allows for 32-, 16-, 8-, and 4-bit
pixel buses to be accommodated without any circuit modification. This enables the system to be easily
reconfigured for varying amounts of available video RAM. Data can be split into 1, 2, 4, or 8 bit planes. The
TLC34075A is software-compatible with the INMOS IMSG176/8 and Brooktree BT476/8 color palettes.
The TLC34075A features a separate VGA bus that allows data from the feature connector of most
VGA-supported personal computers to be fed directly into the palette without the need for external data
multiplexing. This allows a replacement graphics board to remain downward compatible by utilizing the
existing graphics circuitry often located on the motherboard. The TLC34075A also provides a true color
mode in which 24 (3 by 8) bits of color information are transferred directly from the pixel port to the DACs.
This mode of operation supplies an overlay function using the 8 remaining bits of the pixel bus.
The TLC34075A has a 256-by-24 color lookup table with triple 8-bit video D/A converters capable of directly
driving a doubly terminated 75-
line. Sync generation is incorporated on the green output channel. HSYNC
and VSYNC are fed through the device and optionally inverted to indicate screen resolution to the monitor.
A palette page register provides the additional bits of palette address when 1, 2, or 4 bit planes are used.
This allows the screen colors to be changed with only one MPU write cycle.
Clocking is provided through one of four or five inputs (3 TTL- and either 1 ECL- or 2 TTL-compatible) and
is software selectable. The video and shift clock outputs provide a software-selected divide ratio of the
chosen clock input.
The TLC34075A can be connected directly to the serial port of VRAM devices, eliminating the need for any
discrete logic. Support for split shift register transfers is also provided.
The TLC34075A is an optimized version of the original TLC34075 video interface palette. Because all of
the critical speed paths have been strengthened on the device, a slightly higher I
DD
current specification
is required. The new specification also includes revised SCLK/VCLK timing and a clock counter reset
function.
1.1 Features
Versatile multiplexing interface allows lower pixel bus rate
High level of integration provides lower system cost and complexity
Direct VGA pass-through capability
Directly interfaces to TMS34010/TMS34020 and other graphics processors
Triple 8-bit D/A converters
66-, 85-, 110-, and 135-MHz versions
256-word color palette RAM
Palette page register
On-chip voltage reference
RS-343A-compatible outputs
TTL-compatible inputs
Standard MPU interface
Pixel word mask
On-chip clock selection
True color (direct addressing) mode
Directly interfaces to video RAM
Supports split shift register transfers
Software downward-compatible with INMOS IMSG176/8 and Brooktree BT476/8 color palettes
相關PDF資料 |
PDF描述 |
|---|---|
| TLC34075A-85 | Color-Palette(85MHz,視頻接口調(diào)色器) |
| TLC3544IDWR | 5-V ANALOG, 3-/5-V DIGITAL, 14-BIT, 200-KSPS, 4-/8-CHANNELS SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH 0-5 V (PSEUDODIFFERENTIAL) INPUTS |
| TLC3544IPWR | 5-V ANALOG, 3-/5-V DIGITAL, 14-BIT, 200-KSPS, 4-/8-CHANNELS SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH 0-5 V (PSEUDODIFFERENTIAL) INPUTS |
| TLC3544IPWRG4 | 5-V ANALOG, 3-/5-V DIGITAL, 14-BIT, 200-KSPS, 4-/8-CHANNELS SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH 0-5 V (PSEUDODIFFERENTIAL) INPUTS |
| TLC3544CDWRG4 | 5-V ANALOG, 3-/5-V DIGITAL, 14-BIT, 200-KSPS, 4-/8-CHANNELS SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH 0-5 V (PSEUDODIFFERENTIAL) INPUTS |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TLC34076 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Video Interface Palette |
| TLC34076-135FN | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| TLC34076-85FN | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| TLC34077 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Video Interface Palette Data Manual |
| TLC34077135FN | 制造商:TI 功能描述:* |
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