tc9470fn TOSHIBA Semiconductor CORPORATION, tc9470fn Datasheet - Page 4

• Manufacturer Part Number: tc9470fn
• Description: Modulation Da Converter With Built-in 8-times Oversampling Digital Filter/dynamic Digital Bass Boost/analog Filter
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Description of Block Operations
1. Crystal Oscillator Circuit and Timing Generator
Figure 1 Crystal Oscillator Circuit Configuration (when in the 384 fs mode)
However, in this situation, due consideration must be given to the fact that waveform characteristics, such
in the diagram below.
as jitter and rising/falling characteristics of the system clock, significantly affect the DA converter’s noise
distortion and the S/N ratio.
digital filtering and de-emphasis filtering.
The clock required for internal operations is generated by connecting a crystal and condensers as shown
The IC will also operate when a system clock is input from an external source through the XI pin (pin 5).
The timing generator generates the clocks and process timing signals required for such functions as
Use a crystal with a low CI value and favorable start-up characteristics.
GNDX
C
L
XI
X’tal
4
XO
16.9344 MHz
C
L
To internal circuit
V
C
DX
L
= 10 to 33 pF
MCK
TC9470FN
2002-02-27