參數(shù)資料
型號(hào)： LM1246AAA/NA
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 音頻／視頻放大
英文描述： 3 CHANNEL, VIDEO PREAMPLIFIER, PDIP24
封裝： PLASTIC, DIP-24
文件頁(yè)數(shù)： 32/51頁(yè)
文件大?。?/td> 2794K
代理商： LM1246AAA/NA
Control Register Definitions (Continued)
Bits 31–0
These are the Display Window 2 Column Width 2x Enable Bits. These thirty-two bits correspond to columns 31–0
of Display Window 2, respectively. A value of zero indicates the column will have normal width (12 OSD pixels). A
value of one indicates the column will be twice as wide as normal (24 OSD 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).
ROM Bank Select Register A:
BANKSEL_0-1 (0x8427)
Res’d
Bank Select 1
Res’d
Bank Select 0
X
B1AD[2:0]
X
B1AD[2:0]
Bits 2–0
This three-bit field determines the ROM bank (0–7) selected when bits 7–6 of the character
address in Page RAM are 00 (Character Address = 00xxxxxxb)
Bit 3
This bit is reserved and should be set to 0.
Bits 6–4
This three-bit field determines the ROM bank (0–7) selected when bits 7–6 of the character
address in Page RAM are 01 (Character Address = 01xxxxxxb)
Bit 7
This bit is reserved and should be set to 0.
ROM Bank Select Register B:
BANKSEL_2-3 (0x8428)
Res’d
Bank Select 3
Res’d
Bank Select 2
X
B3AD[2:0]
X
B2AD[2:0]
Bits 2–0
This three-bit field determines the ROM bank (0–7) selected when bits 7–6 of the Page RAM
address are 10 (Character Address = 10xxxxxxb)
Bit 3
This bit is reserved and should be set to 0.
Bits 6–4
This three-bit field determines the ROM bank (0–7) selected when bits 7–6 of the Page RAM
address are 11 (Character Address = 11xxxxxxb)
Bit 7
This bit is reserved and should be set to 0.
The actual address for any character in ROM is formed, in logic, from the address in the Page RAM, by this sequence (also see
1.
The upper 2 bits of the character address in Page RAM are used to address one of the four 3-bit fields in Bank Select Register
A or Bank Select Register B. As shown in Table 28. Address Lookup, depending on which of the four values is present, the
corresponding 3-bit bank address is obtained from the BANKSEL_0, BANKSEL_1, BANKSEL_2, or BANKSEL_3 field shown
in the last column.
TABLE 28. Address Lookup
Character Address in Page
RAM
Upper Two Bits
Three-Bit Bank Address
Source
00xxxxxxb
00b
B0AD[2:0]
01xxxxxxb
01b
B1AD[2:0]
10xxxxxxb
10b
B2AD[2:0]
11xxxxxxb
11b
B3AD[2:0]
LM1246
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)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(lèi)別:集成電路 (IC) >> 線(xiàn)性 - 視頻處理 系列:- 產(chǎn)品變化通告:Product Discontinuation 07/Mar/2011 標(biāo)準(zhǔn)包裝:3,000 系列:OMNITUNE™ 類(lèi)型:調(diào)諧器 應(yīng)用:移動(dòng)電話(huà)，手機(jī)，視頻顯示器 安裝類(lèi)型:表面貼裝 封裝/外殼:65-WFBGA 供應(yīng)商設(shè)備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱(chēng):SP000365064
LM1246NA 制造商:NSC 制造商全稱(chēng):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(chēng):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(lèi)別:集成電路 (IC) >> 線(xiàn)性 - 視頻處理 系列:- 產(chǎn)品變化通告:Product Discontinuation 07/Mar/2011 標(biāo)準(zhǔn)包裝:3,000 系列:OMNITUNE™ 類(lèi)型:調(diào)諧器 應(yīng)用:移動(dòng)電話(huà)，手機(jī)，視頻顯示器 安裝類(lèi)型:表面貼裝 封裝/外殼:65-WFBGA 供應(yīng)商設(shè)備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱(chēng):SP000365064
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