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參數資料
| 型號： | SAA7326H |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | CABLE ASSEMBLY; TNC MALE TO TNC MALE; 75 OHM, RG59B/U COAX; 12" CABLE LENGTH; *USES STANDARD 50 OHM INTERFACE CONNECTORS* |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | PLASTIC, SOT-393-1, QFP-64 |
| 文件頁數： | 24/68頁 |
| 文件大?。?/td> | 391K |
| 代理商： | SAA7326H |
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1999 Jun 17
24
Philips Semiconductors
Product specification
Digital servo processor and Compact Disc
decoder with integrated DAC (CD10)
SAA7326
Fig.18 Motor 4-line PWM mode application diagram.
MGA364 - 2
VSS
+
M
MOTO1
V4
MOTO2
V5
100 nF
10
7.13.1.4
CDV/CAV output mode
In the CDV motor mode, the FIFO position will be put in
pulse-width modulated form on the MOTO1 pin [carrier
frequency (300
×
d) Hz], where ‘d’ is the disc speed factor.
The PLL frequency signal will be put in pulse-density
modulated form (carrier frequency 4.23
×
n MHz) on the
MOTO2 pin. The integrated motor servo is disabled in this
mode.
The PWM signal on MOTO1 corresponds to a total
memory space of 20 frames, therefore the nominal FIFO
position (half full) will result in a PWM output of 60%.
In the lock to-disc (CAV) mode the CDV motor mode is the
only mode that can be used to control the motor.
7.13.2
S
PINDLE MOTOR OPERATING MODES
The operating modes of the motor servo is controlled by
decoder register 1 (see Table 11).
In the SAA7326 decoder there is an anti-windup mode for
the motor servo, selected via decoder register 1. When the
anti-windup mode is activated the motor servo integrator
will hold if the motor output saturates.
7.13.2.1
Power limit
In start mode 1, start mode 2, stop mode 1 and stop
mode 2, a fixed positive or negative voltage is applied to
the motor. This voltage can be programmed as a
percentage of the maximum possible voltage, via
register 6, to limit current drain during start and stop.
The following power limits are possible; 100% (no power
limit), 75%, 50% or 37% of maximum.
7.13.3
L
OOP CHARACTERISTICS
The gain and crossover frequencies of the motor control
loop can be programmed via decoder registers 4 and 5.
The following parameter values are possible:
Gains: 3.2, 4.0, 6.4, 8.0, 12.8, 16, 25.6 and 32
Crossover frequency f
4
: 0.5
×
n Hz, 0.7
×
n Hz,
1.4
×
n Hz and 2.8
×
n Hz
Crossover frequency f
3
: 0.85
×
n Hz, 1.71
×
n Hz and
3.42
×
n Hz.
It should be noted that the crossover frequencies f
3
and f
4
are scaled with the overspeed factor ‘n’ whereas the gains
are not.
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| SAA7327 | Digital servo processor and Compact Disc decoder with integrated DAC for video CD (CD7 II)(應用于視頻CD的帶綜合數模轉換器（DAC）的數字伺服處理器和光盤譯碼器) |
| SAA7335GP | DSP for CD and DVD-ROM systems |
| SAA7335 | DSP for CD and DVD-ROM systems(在CD和DVD-ROM應用中的DSP) |
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| SAA7341GP | COMS Digital decoding IC for Compact Disc |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SAA7327 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital servo processor and Compact Disc decoder with integrated DAC for video CD CD7 II |
| SAA7327H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital servo processor and Compact Disc decoder with integrated DAC for video CD CD7 II |
| SAA7327H/T/M2B,557 | 功能描述:視頻 IC COMPACT DISC SYSTEMS RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| SAA7327HBG | 功能描述:視頻 IC COMPACT DISC SYSTEMS RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| SAA7335 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:DSP for CD and DVD-ROM systems |
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