YSS915 Просмотр технического описания (PDF) - Yamaha Corporation

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производитель

YSS915

Karaoke Processor 2 for Video disc player

Yamaha Corporation 

YSS915

FUNCTIONS

1. Clock signal

XI, XISEL, PLLC

Operation of this LSI requires input of clock with frequency of 384 fs (fs : sampling frequency) or 256 fs to the XI

terminal.

Keep the XISEL terminal open when using with the 384 fs clock.(XISEL pin is pulled up internally.)

Pull down XISEL terminal to the digital ground through 4.7 k ohm resistor when using with the 256 fs clock.

The sampling frequency can be selected in the range from 32 kHz to 48 kHz.

The sampling frequency is specified with OPR register ($00).(The sampling frequency of fs = 32 or 48 kHz can be

specified only KP2V Extended mode.)

Sampling

frequency (fs)

XI input frequency

384fs

256fs

Available mode

(See Note.)

32.0 kHz

37.8 kHz

44.1 kHz

48.0 kHz

12.288 MHz

14.5152 MHz

16.9344 MHz

18.432 MHz

8.192 MHz

E

Note ;

9.6768 MHz

N,E

N = KP2 standard mode

11.2896 MHz

N,E

E = KP2V extended mode

12.288 MHz

E

In addition, the thing that input 37MHz in XI by a maximum is possible in only through-mode.

Connect a resistor and capacitor to PLLC terminal as shown below for adjustment of PLL in the LSI.

PLLC

KP2V2

2. Initial clear /IC

This LSI requires initial clear at power on. The initial clear is performed by inputting "L" to /IC terminal.

/IC

2msec min

6

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