- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄36338 > 935263331557 (NXP SEMICONDUCTORS) SPECIALTY CONSUMER CIRCUIT, PQFP240 PDF資料下載
參數(shù)資料
| 型號(hào)： | 935263331557 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP240 |
| 封裝： | 32 X 32 MM, 3.40 MM HEIGHT, MSQFP-240 |
| 文件頁(yè)數(shù)： | 106/518頁(yè) |
| 文件大小： | 7111K |
| 代理商： | 935263331557 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)當(dāng)前第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)第165頁(yè)第166頁(yè)第167頁(yè)第168頁(yè)第169頁(yè)第170頁(yè)第171頁(yè)第172頁(yè)第173頁(yè)第174頁(yè)第175頁(yè)第176頁(yè)第177頁(yè)第178頁(yè)第179頁(yè)第180頁(yè)第181頁(yè)第182頁(yè)第183頁(yè)第184頁(yè)第185頁(yè)第186頁(yè)第187頁(yè)第188頁(yè)第189頁(yè)第190頁(yè)第191頁(yè)第192頁(yè)第193頁(yè)第194頁(yè)第195頁(yè)第196頁(yè)第197頁(yè)第198頁(yè)第199頁(yè)第200頁(yè)第201頁(yè)第202頁(yè)第203頁(yè)第204頁(yè)第205頁(yè)第206頁(yè)第207頁(yè)第208頁(yè)第209頁(yè)第210頁(yè)第211頁(yè)第212頁(yè)第213頁(yè)第214頁(yè)第215頁(yè)第216頁(yè)第217頁(yè)第218頁(yè)第219頁(yè)第220頁(yè)第221頁(yè)第222頁(yè)第223頁(yè)第224頁(yè)第225頁(yè)第226頁(yè)第227頁(yè)第228頁(yè)第229頁(yè)第230頁(yè)第231頁(yè)第232頁(yè)第233頁(yè)第234頁(yè)第235頁(yè)第236頁(yè)第237頁(yè)第238頁(yè)第239頁(yè)第240頁(yè)第241頁(yè)第242頁(yè)第243頁(yè)第244頁(yè)第245頁(yè)第246頁(yè)第247頁(yè)第248頁(yè)第249頁(yè)第250頁(yè)第251頁(yè)第252頁(yè)第253頁(yè)第254頁(yè)第255頁(yè)第256頁(yè)第257頁(yè)第258頁(yè)第259頁(yè)第260頁(yè)第261頁(yè)第262頁(yè)第263頁(yè)第264頁(yè)第265頁(yè)第266頁(yè)第267頁(yè)第268頁(yè)第269頁(yè)第270頁(yè)第271頁(yè)第272頁(yè)第273頁(yè)第274頁(yè)第275頁(yè)第276頁(yè)第277頁(yè)第278頁(yè)第279頁(yè)第280頁(yè)第281頁(yè)第282頁(yè)第283頁(yè)第284頁(yè)第285頁(yè)第286頁(yè)第287頁(yè)第288頁(yè)第289頁(yè)第290頁(yè)第291頁(yè)第292頁(yè)第293頁(yè)第294頁(yè)第295頁(yè)第296頁(yè)第297頁(yè)第298頁(yè)第299頁(yè)第300頁(yè)第301頁(yè)第302頁(yè)第303頁(yè)第304頁(yè)第305頁(yè)第306頁(yè)第307頁(yè)第308頁(yè)第309頁(yè)第310頁(yè)第311頁(yè)第312頁(yè)第313頁(yè)第314頁(yè)第315頁(yè)第316頁(yè)第317頁(yè)第318頁(yè)第319頁(yè)第320頁(yè)第321頁(yè)第322頁(yè)第323頁(yè)第324頁(yè)第325頁(yè)第326頁(yè)第327頁(yè)第328頁(yè)第329頁(yè)第330頁(yè)第331頁(yè)第332頁(yè)第333頁(yè)第334頁(yè)第335頁(yè)第336頁(yè)第337頁(yè)第338頁(yè)第339頁(yè)第340頁(yè)第341頁(yè)第342頁(yè)第343頁(yè)第344頁(yè)第345頁(yè)第346頁(yè)第347頁(yè)第348頁(yè)第349頁(yè)第350頁(yè)第351頁(yè)第352頁(yè)第353頁(yè)第354頁(yè)第355頁(yè)第356頁(yè)第357頁(yè)第358頁(yè)第359頁(yè)第360頁(yè)第361頁(yè)第362頁(yè)第363頁(yè)第364頁(yè)第365頁(yè)第366頁(yè)第367頁(yè)第368頁(yè)第369頁(yè)第370頁(yè)第371頁(yè)第372頁(yè)第373頁(yè)第374頁(yè)第375頁(yè)第376頁(yè)第377頁(yè)第378頁(yè)第379頁(yè)第380頁(yè)第381頁(yè)第382頁(yè)第383頁(yè)第384頁(yè)第385頁(yè)第386頁(yè)第387頁(yè)第388頁(yè)第389頁(yè)第390頁(yè)第391頁(yè)第392頁(yè)第393頁(yè)第394頁(yè)第395頁(yè)第396頁(yè)第397頁(yè)第398頁(yè)第399頁(yè)第400頁(yè)第401頁(yè)第402頁(yè)第403頁(yè)第404頁(yè)第405頁(yè)第406頁(yè)第407頁(yè)第408頁(yè)第409頁(yè)第410頁(yè)第411頁(yè)第412頁(yè)第413頁(yè)第414頁(yè)第415頁(yè)第416頁(yè)第417頁(yè)第418頁(yè)第419頁(yè)第420頁(yè)第421頁(yè)第422頁(yè)第423頁(yè)第424頁(yè)第425頁(yè)第426頁(yè)第427頁(yè)第428頁(yè)第429頁(yè)第430頁(yè)第431頁(yè)第432頁(yè)第433頁(yè)第434頁(yè)第435頁(yè)第436頁(yè)第437頁(yè)第438頁(yè)第439頁(yè)第440頁(yè)第441頁(yè)第442頁(yè)第443頁(yè)第444頁(yè)第445頁(yè)第446頁(yè)第447頁(yè)第448頁(yè)第449頁(yè)第450頁(yè)第451頁(yè)第452頁(yè)第453頁(yè)第454頁(yè)第455頁(yè)第456頁(yè)第457頁(yè)第458頁(yè)第459頁(yè)第460頁(yè)第461頁(yè)第462頁(yè)第463頁(yè)第464頁(yè)第465頁(yè)第466頁(yè)第467頁(yè)第468頁(yè)第469頁(yè)第470頁(yè)第471頁(yè)第472頁(yè)第473頁(yè)第474頁(yè)第475頁(yè)第476頁(yè)第477頁(yè)第478頁(yè)第479頁(yè)第480頁(yè)第481頁(yè)第482頁(yè)第483頁(yè)第484頁(yè)第485頁(yè)第486頁(yè)第487頁(yè)第488頁(yè)第489頁(yè)第490頁(yè)第491頁(yè)第492頁(yè)第493頁(yè)第494頁(yè)第495頁(yè)第496頁(yè)第497頁(yè)第498頁(yè)第499頁(yè)第500頁(yè)第501頁(yè)第502頁(yè)第503頁(yè)第504頁(yè)第505頁(yè)第506頁(yè)第507頁(yè)第508頁(yè)第509頁(yè)第510頁(yè)第511頁(yè)第512頁(yè)第513頁(yè)第514頁(yè)第515頁(yè)第516頁(yè)第517頁(yè)第518頁(yè)
TM1100 Preliminary Data Book
Philips Semiconductors
13-8
PRELIMINARY INFORMATION
File: icp.fm5, modified 7/26/99
diagram of the input to output pixel relationship and the
output fractional X and Y subpixel offset is shown in
Output Scaling Calculation Method
The output pixel distance in H and V in the ICP is calcu-
lated to high precision (16 bit fraction) even though the
output resolution is fixed at 1/32 of the input grid. Each
output pixel’s location relative to the input pixel grid in
memory is given by:
X location of output pixel = X0 of input line + Output
pixel number / X Scale Factor
Y location of output pixel = Y0 of input window
+ Output line number / Y Scale Factor
The X and Y locations may not be integer values, de-
pending on the scale factor. The resulting X and Y pixel
locations can be separated into an integer and a fraction-
al part. The integer part of the X and Y location selects
the pixel and line number closest to the output pixel, re-
spectively. The fractional part gives the fractional dis-
tance of the output pixel to the next X and Y input pixel
values. These fractional parts are the dX and dY values
shown in Figure 13-9.
The output pixel’s value can be calculated by interpola-
tion between these two pixels, or by 5-tap filtering using
the 5 nearest pixels rather than the 2 nearest pixels. In-
terpolation or filtering uses the fractional position values,
X and Y, to select the appropriate filter coefficients. In
the ICP, these values are limited to 5 bits for a resolution
of 1/32, even though the actual position value has much
higher resolution. The ICP uses fractional values that are
centered around the center pixel with a range of -16/32
to +15/32.
To perform scaling, you must generate the X and Y loca-
tions of the output pixel relative to the input pixel grid, in-
cluding both the integer part to locate the adjacent pixels
and the fractional part to choose the filter coefficients
which generate the output value from the adjacent pixels.
This could be done by generating the output pixel X and
Y numbers and dividing each by its associated scale fac-
tor. Since dividing is expensive in hardware and time, the
ICP effectively multiplies the X and Y pixel numbers by
the inverse of the X and Y scaling factors, respectively.
The ICP does this by incrementing the X and Y input pix-
el counters by X and Y increment values that are the in-
verse of the X and Y scale factors, respectively. If you are
at output pixel Xn, you have added the inverse of the
scale factor to the X input location n times, equivalent to
multiplying n by the inverse of the scale factor.
The ICP uses a 16-bit integer and a16-bit fractional value
for the X and Y increment values. This allows a fractional
value resolution of 1/64K. This high resolution of the cal-
culated prevents an accumulation of error as you incre-
ment along the line. Since you will add the increment val-
ue 1024 times in a 1024 pixel line, any error in an
individual calculation will be multiplied by 1024.
Only the most significant 5 bits of the fractional value are
used by the filter coefficient RAMs. However, the X and
Y Counters are incremented by the high resolution X and
Y increment values. The result of this truncation is a
worst case error of approximately 1.5% in amplitude rel-
ative to arbitrary pixel output positions.
The error caused by discrete (1/32) resolution can be re-
duced to exactly zero if the output image size is adjusted
to have a repeating pattern that fits on these 1/32 bound-
aries. For zero error, this implies that the scaling factor
must be of the form of B/A, where B (the output pixel
count factor) is a sub-multiple of 32 [i.e. 1, 2, 4, 8, 16, 32],
and A (the input pixel count factor) is an integer deter-
mined by the nearest acceptable scale factor for a given
B. In the 640 to 1024 conversion case, the B/A ratio was
8/5, meeting this requirement.
The integer values, if accumulated, would be equal to the
total number of input pixels when scaling is complete.
The integer values for each pixel define the number of
pixels to read from memory and shift in to generate the
next output pixel. For example, a scaling factor of 1.0 will
result in one pixel shifted in for each output pixel gener-
ated. Upscaling will have integer increment values of
less than one. This means that the integer value will 0 for
some pixels and 1 for others. For example, upscaling by
2.0 will result in integer values of 1 half the time and 0 for
the other half, depending on the carry out from the frac-
tional increment.
Pixel Shift Bypassing for Large Down Scaling
Down scaling will have integer increment values of great-
er than one. In this case, the integer value indicates the
number of pixels to read to get filter pixels for the next
output pixels. There are two ways to read and shift in the
pixels in the down scaling case: shift all and shift bypass.
In the shift all mode (the default mode) all five pixels are
shifted for each input value read and shifted in. The shift
all mode uses the five input pixels nearest the output pix-
el, independent of scaling factor. In the shift bypass
case, only the last pixel is shifted in. For example, in a
down scaling of 10, nine pixels are read, and the 10th
pixel is shifted in to the filter. The shift bypass mode is
used for large down scaling, i.e. down scaling factors of
2.0 or greater. The shift bypass mode is selected by set-
ting the GETB bit in the parameter table. The shift by-
Figure 13-9. ICP 1/32 Output Resolution
1
2
Input Pixels
Output Pixels
dY
dX
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 935263133112 | 26 W, 1 CHANNEL, AUDIO AMPLIFIER, PZIP17 |
| 935263384118 | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 935263384112 | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 935263512112 | TRIPLE 2-CHANNEL, SGL ENDED MULTIPLEXER, PDSO16 |
| 933282660652 | TRIPLE 2-CHANNEL, SGL ENDED MULTIPLEXER, PDIP16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 935264217557 | 制造商:NXP Semiconductors 功能描述:SUB ONLY IC |
| 935267356112 | 制造商:NXP Semiconductors 功能描述:IC TEA1507PN |
| 935268081112 | 制造商:NXP Semiconductors 功能描述:SUB ONLY IC |
| 935268721125 | 制造商:NXP Semiconductors 功能描述:Buffer/Line Driver 1-CH Non-Inverting 3-ST CMOS 5-Pin TSSOP T/R |
| 935269304128 | 制造商:ST-Ericsson 功能描述:IC AUDIO CODEC W/TCH SCRN 48LQFP |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。