TB2118FG Просмотр технического описания (PDF) - Toshiba

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производитель

TB2118FG

High Speed PLL For DTS(Bi−CMOS Integrated Circuit Silicon Monolithic)

Toshiba 

TB2118FG

2. Setting reference frequency−related (reference divider block) items

1) Setting crystal oscillator (OSC)

With TB2118FG, the two−frequency oscillator shown below can be driven by self−oscillation.

F0 Bit

F1 Bit

Input Frequency

0

0

10.25MHz

0

1

10.35MHz

(Note) At power on, F0 / F1 = 0.

• Connection example

OSC OUT

2

XOUT

1

2 pF

XIN

24

6 pF

CL

(Note) Use a crystal oscillator with RS = 50Ω

and less and CL = 12pF or less.

2) Setting reference frequency (R0, R1, R2)

R0

R1

R2

10.25MHz

10.35MHZ

0

0

0

1

0

0

0

1

0

1

1

0

0

0

1

1

0

1

0

1

1

1

1

1

―

50kHz

―

―

10kHz

―

―

1kHz

―

50kHz

―

―

―

9kHz

―

―

(Note) Do not select settings where is enterd instead of frequency.

3) OSC output select (OSC) = oscillation frequency is output from the OSC out pin.

OSC

OSC Out Pin

0

Output off

1

Output on

(Note) At power on, OSC = 0.

9

2006-04-12

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