參數(shù)資料
型號(hào)： ZR36060
廠商： Zoran Corporation
元件分類(lèi)： Codec
英文描述： Integrated JPEG Codec(集成JPEG編解碼器)
中文描述： 綜合JPEG編解碼器（集成的JPEG編解碼器）
文件頁(yè)數(shù)： 22/46頁(yè)
文件大小： 307K
代理商： ZR36060
20
Integrated JPEG CODEC
5.2.4 Transition between fields in decompression
For decompression, Figure 26 shows code transfer with 8-bit
interface and Figure 27 with 16-bit interface, at the transition
between consecutive fields showing the behavior of the EOI,
END and CBUSY signals.
JPEG compressed files input to the ZR36060 can be any size,
not required to be 32-bit, (double-word) aligned. The ZR36060
detects the EOI marker (0xFFD9), asserting EOI and CBUSY at
the next write strobe. Note that the host is allowed to write one
additional byte after the EOI marker code in 8-bit mode, or one
additional word after the word containing the second byte of the
EOI marker code 16-bit interface mode. This byte or word is dis-
carded by the ZR36060. If this discarded code byte or word
contained one or both bytes of the SOI marker of the next field,
the ZR36060 automatically reconstructs the marker when it
starts decompressing the next field.
Note that EOI and CBUSY may remain unasserted until END is
asserted, if the host has other means to detect the EOI marker
code and therefore does not issue the additional write strobe.
Attempts to access the code FIFO while CBUSY is asserted will
be held off until the FIFO is available again, using the ACK
signal. In this example, a WR pulse is shown being extended
until the next field begins, when CBUSY is deasserted.
END is asserted only after the whole decompressed field has
been output from the video interface. At this time the ZR36060
sets the EOAV status bit and returns to the IDLE state. Decom-
pression is started again when the ZR36060 senses the START
signal active.
Figure 26. 8-Bit Code Slave Mode Decompression, Transistion Between Consecutive Fields
CS
ADDR[1:0]
WR
ACK
CBUSY
EOI
DATA[7:0]
XX
XX
FF
D9
00
00
END
XX
FF
D8
CODE for Field N
CODE for Field N+1
Start-Of-Image marker
End-Of-Image marker
End of Field
Process
Start new field process
due to START
Figure 27. 16-Bit Code Slave Mode Decompression, Transistion Between Consecutive Fields
CS
ADDR[1:0]
WR
ACK
CBUSY
EOI
DATA[7:0]
CODE[7:0]
XXXX
XXFF
D9FF
FFFF
00
00
END
FFFF
FFD8
FFXX
CODE for Field N
CODE for Field N+1
Start-Of-Image marker
End-Of-Image marker
End of Field
Process
Start new field process
due to START
相關(guān)PDF資料
PDF描述
ZR36060 Circular Connector; No. of Contacts:19; Series:; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:14; Circular Contact Gender:Socket; Circular Shell Style:Cable Receptacle; Insert Arrangement:14-19
ZR36060PQC Integrated JPEG CODEC
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ZR36060PQC 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Integrated JPEG CODEC
ZR36060PQC-27 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:
ZR36060PQC-29.5 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:
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