AK4584_01 Datasheet, PDF (22/53 Pages) Asahi Kasei Microsystems – 24Bit 96kHz Audio CODEC with DIT/DIR

ASAHI KASEI
„ Clock Source
(1) Using X’tal
XTI
[AK4584]
XTO
AK4584
Figure 2. X’tal mode
- Note: External capacitance depends on the crystal oscillator (Typ. 10-40pF)
(2) Using external clock
XTI
External
Clock
XTO
AK4584
C _XTI
External
Clock
XTO
AK4584
Figure 3. (a) External Clock mode
Figure 3. (b) External Clock Mode
(Input : CMOS Level)
(Input : ≥ 40%DVDD)
- Note: Input clock must not exceed DVDD.
(3) Clock Operation Mode 0
XTI
XTO
AK4584
Figure 4. Off mode
„ 192kHz Clock Recovery
The on chip low jitter PLL has a wide lock range from 32kHz to 192kHz and a lock time of less than 20ms. The AK4584
also has a sampling frequency detect function that works by performing either a clock comparison against the X’tal
oscillator or by using the channel status. The AK4584 detects the following sampling frequencies : 32kHz, 44.1kHz,
48kHz, 88.2kHz, 96kHz, 176.4kHz and 192kHz. The PLL loses lock when the incoming sync interval is incorrect.
MS0118-E-00
- 22 -
2001/11