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參數資料
| 型號： | LM1276AAA/NA |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 CHANNEL, VIDEO PREAMPLIFIER, PDIP28 |
| 封裝： | PLASTIC, DIP-28 |
| 文件頁數： | 28/50頁 |
| 文件大小： | 6075K |
| 代理商： | LM1276AAA/NA |
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Bits 7–0
There are two possible OSD windows which can be displayed simultaneously or individually. This register determines
the horizontal start position of Window 1 in OSD pixels (not video signal pixels). The actual position, to the right of the
horizontal flyback pulse, is determined by multiplying this register value by 4 and adding 30. Due to pipeline delays, the
first usable start location is approximately 42 OSD pixels following the horizontal flyback time. For this reason, we
recommend this register be programmed with a number larger than 2, otherwise improper operation may result.
Display Window 1 Vertical Start Address:
VSTRT1 (0x8411)
Window 1 Vertical Start Address
VPOS1[7:0]
Bits 7–0
This register determines the Vertical start position of the Window 1 in constant-height character lines (not video scan
lines). The actual position is determined by multiplying this register value by 2. (Note: each character line is treated as
a single auto-height character pixel line, so multiple scan lines may actually be displayed in order to maintain accurate
position relative to the OSD character cell size. (See the Constant Character Height Mechanism section.) This register
should be set so the entire OSD window is within the active video.
Display Window 1 Start Address:
W1STRTADRH (0x8413)
W1STRTADRL (0x8412)
Reserved
Window 1 Start Address
X
ADDR1[8:0]
Bits 8–0
This register determines the starting address of Display Window 1 in the Display Page RAM. The power-on default of
0x00 starts Window 1 at the beginning of the Page RAM (0x8000). This first address location always contains the SL
code for the first line of Display Window 1. This register is new for the LM1276 and allows Window 1 to start anywhere
in the Page RAM rather than just at 0x8000. Note that the address this points to in Page RAM must always contain the
SL code for the first line of the window.
Bits 15–9
These bits are reserved and should be set to zero.
Display Window 1 Column Width:
COLWIDTH1B3 (0x8417)
COLWIDTH1B2 (0x8416)
Window 1 Column Width - High Bytes
COL1[31:16]
COLWIDTH1B1 (0x8415)
COLWIDTH1B0 (0x8414)
Window 1 Column Width - Low Bytes
COL1[15:0]
Bits 31–0
These are the Display Window 1 Column Width 2x Enable Bits. These 32 bits correspond to columns 31–0 of Display
Window 1, respectively. A value of zero indicates the column will have normal width (12 pixels). A “1” indicates the
column will be twice as wide as normal (24 pixels). For the double wide case, each Character Font pixel location will be
displayed twice, in two consecutive horizontal pixel locations. The user should note that if more than 32 display
characters are programmed to reside on a line, then all display characters after the first thirty-two will have normal width
(12 pixels).
Display Window 2 Horizontal Start Address:
HSTRT2 (0x8418)
Window 2 Horizontal Start Address
HPOS2[7:0]
www.national.com
34
200969 Version 2 Revision 4
Print Date/Time: 2011/07/11 11:20:12
LM1276
相關PDF資料 |
PDF描述 |
|---|---|
| LM1279AN/NOPB | 3 CHANNEL, VIDEO AMPLIFIER, PDIP20 |
| LM1279N/NOPB | 1 CHANNEL, VIDEO AMPLIFIER, PDIP20 |
| LM136A-2.5MD8 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 5 V, UUC |
| LM136A-5.0MW8 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 5 V, UUC |
| LM136A-5.0MD8 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 5 V, UUC |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM1279 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:110 MHz RGB Video Amplifier System with OSD |
| LM12791DL WAF | 制造商:Texas Instruments 功能描述: |
| LM1279A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LM1279AN | 功能描述:IC AMP RGB VIDEO SYSTEM 20-DIP RoHS:否 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標準包裝:1,000 系列:- 應用:驅動器 輸出類型:差分 電路數:3 -3db帶寬:350MHz 轉換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應商設備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) |
| LM1279DL WAF | 制造商:Texas Instruments 功能描述: |
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