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參數資料
| 型號： | LM1246AAA/NA |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 3 CHANNEL, VIDEO PREAMPLIFIER, PDIP24 |
| 封裝： | PLASTIC, DIP-24 |
| 文件頁數： | 24/51頁 |
| 文件大小： | 2794K |
| 代理商： | LM1246AAA/NA |
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LM1246 Address Map (Continued)
TABLE 13. OSD Control Register Detail (Continued)
Register
Address
Default
D7
D6
D5
D4
D3
D2
D1
D0
COLWIDTH2B3
0x841F
0x00
COL[31:24]
Any registers in the range of 0x8420 - 0x8426 are for National Semiconductor internal use only and should not be written to under
application conditions.
BANKSEL_0–1
0x8427
0x10
X
B1AD[2:0]
X
B0AD[2:0]
BANKSEL_2–3
0x8428
0x32
X
B3AD[2:0]
X
B2AD[2:0]
FADE_INTVL
0x8429
0x35
V_INTVL[3:0]
H_INVTVL[3:0]
PREAMPLIFIER CONTROL
These registers, shown in Table 14. LM1246 Preamplifier Interface Registers, control the gains, DAC outputs, PLL, horizontal and
vertical blanking, OSD contrast and DC offset of the video outputs. The registers, shown in Table 15. LM1246 Preamplifier
Interface Auto Size Registers, provide measured and calculated data for the microcontroller to perform auto size and auto center
functions. Any bits marked as “X” are reserved and should be written to with zeros and should be ignored when the register is
read. Additional register detail is provided in the Control Register Definitions Section, later in this document.
TABLE 14. LM1246 Preamplifier Interface Registers
Register
Address
Default
D7
D6
D5
D4
D3
D2
D1
D0
BGAINCTRL
0x8430
0x60
X
BGAIN[6:0]
GGAINCTRL
0x8431
0x60
X
GGAIN[6:0]
RGAINCTRL
0x8432
0x60
X
RGAIN[6:0]
CONTRCTRL
0x8433
0x60
X
CONTRAST[6:0]
DAC1CTRL
0x8434
0x80
DAC1[7:0]
DAC2CTRL
0x8435
0x80
DAC2[7:0]
DAC3CTRL
0x8436
0x80
DAC3[7:0]
DAC4CTRL
0x8437
0x80
DAC4[7:0]
DACOSDDCOFF
0x8438
0x14
X
DCF[1:0]
OSD CONT[1:0]
DC OFFSET[2:0]
GLOBALCTRL
0x8439
0x02
XXXXX
BSD
PS
BV
AUXCTRL
0x843A
0x03
X
HB_POS[3:0]
HBPOS
_EN
RSV
HBD
PLLFREQRNG
0x843E
0x06
X
PLL_
AUTO
CLMP
X
OOR
VBL
PFR[1:0]
SRTSTCTRL
0x843F
0x00
X
AID
X
SRST
TABLE 15. LM1246 Preamplifier Interface Auto Size Registers
Register
Address
Default
D7
D6
D5
D4
D3
D2
D1
D0
H_FP0
0x8580
0xFF
HFP[7:0]
H_FP1
0x8581
0x07
X
HFP[10:8]
HF_S0
0x8582
0xFF
HFL_HS[7:0]
HF_S1
0x8583
0x03
X
HFL HS[9:8]
H_BP0
0x8584
0xFF
HBP[7:0]
H_BP1
0x8585
0x07
X
HBP[10:8]
V_FP0
0x8586
0xFF
VFP[7:0]
V_FP1
0x8587
0x07
X
VFP[10:8]
V_SYN_D
0x8588
0xFF
VSYNC[7:0]
V_BP0
0x8589
0xFF
VBP[7:0]
V_BP1
0x858A
0x07
X
VBP[10:8]
TWO-COLOR ATTRIBUTE RAM
This address range (0x8440–0x8497) contains the attribute lookup tables used for displaying two-color characters. There are 16
groups of 4 bytes each according to the format shown in Table 16. LM1246 Two-Color Attribute Registers. The attributes are
stored starting with Color 0 (background) and each color is stored red first, green second and then blue. They may be written or
read using the following address format:
LM1246
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM1246AAC/NA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述:IC 150MHZ RGB PREAMP 1246 DIP24 |
| LM1246AAC/NA/NOPB | 功能描述:IC PREAMP RGB 150MHZ 24-DIP RoHS:是 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 產品變化通告:Product Discontinuation 07/Mar/2011 標準包裝:3,000 系列:OMNITUNE™ 類型:調諧器 應用:移動電話，手機，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應商設備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱:SP000365064 |
| LM1246NA | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs |
| LM1247 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs |
| LM1247AAG/NA | 功能描述:IC PREAMP CMOS 150MHZ 24DIP RoHS:否 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 產品變化通告:Product Discontinuation 07/Mar/2011 標準包裝:3,000 系列:OMNITUNE™ 類型:調諧器 應用:移動電話，手機，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應商設備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱:SP000365064 |
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