參數(shù)資料
型號: TVP3026-220
廠商: Texas Instruments, Inc.
英文描述: Video Interface PALETTE Exract(組合像素模式視頻接口調(diào)色器)
中文描述: 視頻接口調(diào)色板Exract(組合像素模式視頻接口調(diào)色器)
文件頁數(shù): 22/107頁
文件大?。?/td> 707K
代理商: TVP3026-220
2–8
Loop
Clock PLL
VCLK
Divider
Pixel Clock
PLL
MCLK
PLL
Crystal
Amplifier
RCLK
VCLK
MCLK
Internal
Dot Clock
CLK0–2/2
XTAL2
XTAL1
PCLKOUT
LCLK
Figure 2–1. TVP3026 Clocking Scheme
2.4.1
The pixel clock PLL may be used at frequencies up to the device limit. Appendix A provides optimal register
values for all frequencies that can be synthesized using the common 14.31818 MHz reference. The
following equations describe the voltage controlled oscillator frequency and the PLL output frequency for
the pixel clock PLL as a function of the N, M, and P values and the reference frequency F
REF
.
The frequency of the voltage controlled oscillator (VCO) is given by:
Pixel Clock PLL
Provided:
FVCO
8
FREF
65
65
M
N
Minimum VCO Frequency
FVCO
Maximum VCO Frequency
(1)
Then the PLL output frequency is :
FPLL
FVCO
2P
(2)
The N-, M-, and P-value registers may be programmed to any value within the following limits:
40
1
0
N(5–0)
M(5–0)
P(1,0)
62
62
3
The bit assignments of the N-, M-, and P-value and the status register for the pixel clock PLL are given in
Table 2–10. The bits shown as set to 0 or 1 must be written with these fixed values. PCLKEN enables the
pixel clock PLL output onto the PCLKOUT output terminal when set to 1. When PCLKEN is reset to 0, the
PCLKOUT terminal is held at 0. PLLEN resets the PLL to 0 and enables the PLL to oscillate when set to
1. When PFORCE is set to 1, the pixel clock PLL uses its programmed N, M, and P registers and ignores
PLLSEL(1,0). When LFORCE is set to 1, the loop clock PLL uses its programmed N, M, and P registers and
ignores PLLSEL(1,0). The LOCK status bit indicates that the PLL has locked to the selected frequency when
set to 1. The remaining status register bits are for test purposes.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TVP3026-220AMDN 制造商:TI 制造商全稱:Texas Instruments 功能描述:Video Interface Palette
TVP3026-220APCE 制造商:TI 制造商全稱:Texas Instruments 功能描述:Video Interface Palette
TVP3026-220BMDN 制造商:TI 制造商全稱:Texas Instruments 功能描述:Video Interface Palette
TVP3026-220BPCE 制造商:Rochester Electronics LLC 功能描述:- Bulk
TVP3026-220MDN 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Video DAC with Color Palette (RAMDAC)