MN662785TBUC Datasheet, PDF (10/89 Pages) Panasonic Semiconductor – LSI FOR COMPACT DISC/CD ROM PLAYER

MN662785TBUC


7-0 Contents of functions amended from MN662780
(1) Digital servo section
ɹ ɾ Focus and tracking servos' sampling frequency : 88.2 kHz
ɾ Timings of initial settings
ɾ Spindle forced acceleration/deceleration output level setting
ɾ KICK pulse level setting (KICK2) for servo pull-in operation abolished
ɾ Zero-cross reference brake mode abolished
ɾ Fixed noise rejection mode during braking operation of tracking
ɾ Software reset function added
ɾ Change of servo parameter exponent part format (FEXP, TEXP)
(2) Digital filter (DF) and D/A converter (DAC) sections
ɾ DF and DAC sections operating clock selectable between normal-speed and 2x-speed modes
ɾ DF section 8x-oversampling operation
ɾ Low-voltage op amp
ɾ Change of low-band boost filter characteristics
(Low band: Ê´3 dB Ë Ê´4.5 dB)
(3) Signal processing section
ɾ 33.8688-MHz system clock
ɾ Function to select a microcomputer interface input noise filter with a command
ɾ Clock selection function for microcomputer (4 MHz, 8 MHz)
ɾ Function to select current rate of PLL frequency comparison and phase comparison
ɾ Function to select output width when detecting 12T or 5T
ɾ Subcode Q data adding function in control of digital audio interface output when the anti-shock
memory function is in use
ɾ Compatible with bilingual operation when anti-shock memory function is in use
ɾ Compatible with 2x-speed digital audio interface output
ɾ Muting of data output from anti-shock memory controller
ɾ Audio data 0 detection flag function (ZDET signal)
SDD00026AEM
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