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參數資料
| 型號： | LC78630E |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP80 |
| 封裝： | QFP-80 |
| 文件頁數： | 21/33頁 |
| 文件大小： | 432K |
| 代理商： | LC78630E |
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28. Other pins; Pin 8: TAI, pin 12: TEST1, pin 16: TEST2, pin 17: TEST3, pin 26: TEST4, pin 77: TEST5, pin 73:
TESTF
These are test pins for testing the LSI internal circuits. TAI and TEST1 to TEST5 have built-in pull-down resistors.
29. RAM address control
The LC78630E incorporates an 8-bit
× 2336-word RAM on chip. This RAM provides an EFM demodulated data
jitter handling capacity of ±8 frames implemented using address control. The LC78630E continuously checks the
remaining buffer capacity and controls the data write address to fall in the center of the buffer capacity by making
fine adjustments to the frequency divisor in the PCK side of the CLV servo circuit. If the ±8 frame buffer capacity is
exceeded, the LC78630E forcibly sets the write address to the ±0 position. However, since the errors that occur due
to this operation cannot be handled with error flag processing, the IC applies muting to the output for a 109 frame
period.
No. 5121-28/33
LC78630E
Position
Division ratio or processing
–8 or lower
Forcibly moves to ±0
–7 to –1
Advancing divisor: 589
±0
Standard divisor: 588
+1 to +7
Fall back divisor: 587
+8 or greater
Forcibly moves to ±0
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相關代理商/技術參數 |
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| LC78631 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disk Player DSP |
| LC78631E | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disk Player DSP |
| LC78632 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disk Player DSP |
| LC78632RE | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disk Player DSP |
| LC78637E-E | 制造商:ON Semiconductor 功能描述: |
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