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參數(shù)資料
| 型號(hào)： | SAA7378GP |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Single Chip Digital Servo Processor and Compact Disc Decoder |
| 中文描述： | 單片機(jī)數(shù)字伺服處理器和光盤解碼器 |
| 文件頁數(shù)： | 27/45頁 |
| 文件大?。?/td> | 224K |
| 代理商： | SAA7378GP |
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Philips Semiconductors
Preliminary specification: Version 1.0
May 1995
27
Digital Servo Processor and Compact Disc Decoder (CD7)
SAA7378GP
-
-
-
-
-
V2
MOTOR-OV
FIFO-OV
SHOCK
LA-SHOCK
Follows input on V2 pin.
High if the motor servo output stage saturates.
High if FIFO overflows.
MOTSTART2 + PLL Lock + MOTOR-OV + FIFO-OV + OTD (high if shock detected)
Latched SHOCK signal
The status read protocol is shown in Figure 21.
Note that: - SILD must be held high.
9.3
To read Q-channel subcode direct in 4-wire bus mode, the SUBQREADY-Isignal should be selected as status signal. The
subcode read protocol is shown in Figure 22
.
Reading Q-Channel Subcode
Note that: - SILD must be held high.
- after subcode read starts, the microprocessor may take as long as it wants to terminate the read operation.
- when enough subcode has been read (1 - 96 bits), terminate reading by pulling RAB low.
9.3.1
When the CRC of the Q-channel word is good, and no subcode is being read, the SUBQREADY-Istatus signal will react as
shown in Figure 23
:
Behaviour of the SUBQREADY-ISignal
RAB (
μ
P)
SCL (
μ
P)
SDA (
μ
P)
SDA (SAA7378)
Hi-impedance
STATUS
Figure 21 Microprocessor Read Protocol for Decoder Status on SDA
RAB (
μ
P)
SCL (
μ
P)
SDA (SAA7378)
Q1
Q2
Q3
Qn-2 Qn-1 Qn
CRC
OK
STATUS
Figure 22 Microprocessor Protocol for Reading Q-Channel Subcode
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| SAA7380 | Error correction and host interface IC for CD-ROM ELM |
| SAA7380GP | Error correction and host interface IC for CD-ROM ELM |
| SAA7381 | ATAPI CD-R block decoder |
| SAA7382GP | Error correction and host interface IC for CD-ROM ELM |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA7380 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Error correction and host interface IC for CD-ROM ELM |
| SAA7380GP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Error correction and host interface IC for CD-ROM ELM |
| SAA7381 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:ATAPI CD-R block decoder |
| SAA7382 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Error correction and host interface IC for CD-ROM ELM |
| SAA7382GP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Error correction and host interface IC for CD-ROM ELM |
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