SAA7324H NXP Semiconductors, SAA7324H Datasheet - Page 25

• Manufacturer Part Number: SAA7324H
• Manufacturer: NXP Semiconductors

Specifications of SAA7324H

• Operating Temperature (max): 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 64
• Lead Free Status / Rohs Status: Compliant

Philips Semiconductors
7.13.4
If FIFO overflow occurs during Play mode (e.g.: as a result of motor rotational shock), the FIFO will be automatically reset
to 50% and the audio interpolator tries to conceal as much as possible to minimize the effect of data loss.
Table 11 Operating modes
2000 Jun 26
Start mode 1
Start mode 2
Jump mode
Jump mode 1
Play mode
Stop mode 1
Stop mode 2
Off mode
Digital servo processor and Compact Disc
decoder with integrated DAC (CD10 II)
MODE
FIFO
OVERFLOW
The disc is accelerated by applying a positive voltage to the spindle motor. No decisions are involved
and the PLL is reset. No disc speed information is available for the microcontroller.
The disc is accelerated as in start mode 1, however the PLL will monitor the disc speed. When the
disc reaches 75% of its nominal speed, the controller will switch to jump mode. The motor status
signals selectable via register 2 are valid.
Motor servo enabled but FIFO kept reset at 50%, integrator is held. The audio is muted but it is
possible to read the subcode. It should be noted that in the CD-ROM modes the data, on EBU and
the I
Similar to jump mode but motor integrator is kept at zero. Used for long jumps where there is a large
change in disc speed.
FIFO released after resetting to 50%. Audio mute released.
Disc is braked by applying a negative voltage to the motor. No decisions are involved.
The disc is braked as in stop mode 1 but the PLL will monitor the disc speed. As soon as the disc
reaches 12% (or 6%, depending on the programmed brake percentage, via register E) of its nominal
speed, the MOTSTOP status signal will go HIGH and switch the motor servo to Off mode.
Motor not steered.
2
S-bus is not muted.
G
Fig.19 Motor servo mode diagram.
4 f
3 f
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DESCRIPTION
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MGA362 - 2
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Product specification
SAA7324