參數(shù)資料
型號: UPD70433R-12
廠商: NEC Corp.
元件分類: 16位微控制器
英文描述: V55PITM 16-BIT MICROPROCESSOR
中文描述: V55PITM 16位微處理器
文件頁數(shù): 71/166頁
文件大?。?/td> 772K
代理商: UPD70433R-12
71
μ
PD70433
16. CODEC INSTRUCTIONS
The V55PI has 9 codec instructions.
Using these special instructions on the V55PI enables not only image information MH encoding but also MR encoding
which previously required the use of a special device such as an ACEE (advanced compression/expansion engine) to be
implemented by means of a small-scale, high-speed codec.
16.1 FEATURES
The V55PI has the following 9 codec instructions (4 for compression, 5 for expansion):
Compression instructions
(1)
Change point table creation instruction: COLTRP
(2)
Data transmission instruction (transmission of EOL
*1
, FILL, RTC
*2
, etc.): ALBIT
(3)
MH encoding instruction: MHENC
(4)
MR encoding instruction: MRENC
Expansion instructions
(5)
EOL detection instruction: SCHEOL
(6)
1-bit (tag) detection instruction: GETBIT
(7)
MH decoding change point table creation instruction: MHDEC
(8)
MR decoding change point table creation instruction: MRDEC
(9)
Pixel data creation instruction: CNVTRP
MH/MR encoding and MH/MR decoding using these instructions are performed as shown in Figures 16-1 and
16-2.
* 1.
EOL: End Of Line
RTC: Return To Control
2.
Note
When compression/expansion processing is performed using the V55PI codec instructions, the following
should be specified as preconditions.
Compression/expansion is to be performed line by line.
Consideration must be given to task switching and interrupt generation during compression processing.
The number of bits processed per line must not be changed during processing of one page.
The segment value must be changed for data over 64 Kbytes that straddles segments during processing.
相關(guān)PDF資料
PDF描述
UPD70433R-16 V55PITM 16-BIT MICROPROCESSOR
UPD70433GD-12-5BB V55PITM 16-BIT MICROPROCESSOR
UPD70433GD-16-5BB V55PITM 16-BIT MICROPROCESSOR
UPD70433GJ-12-3EB V55PITM 16-BIT MICROPROCESSOR
UPD70433GJ-16-3EB V55PITM 16-BIT MICROPROCESSOR
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPD70433R-16 制造商:NEC 制造商全稱:NEC 功能描述:V55PITM 16-BIT MICROPROCESSOR
UPD705100 制造商:NEC 制造商全稱:NEC 功能描述:V830TM 32-BIT MICROCONTROLLER
UPD705100GJ-100-8 制造商:NEC 制造商全稱:NEC 功能描述:V830TM 32-BIT MICROCONTROLLER
UPD705100GJ-100-8EU 制造商:NEC 制造商全稱:NEC 功能描述:V830TM 32-BIT MICROCONTROLLER
UPD705101 制造商:NEC 制造商全稱:NEC 功能描述:32-BIT MICROPROCESSOR