ak4368 AKM Semiconductor, Inc., ak4368 Datasheet - Page 36

• Manufacturer Part Number: ak4368
• Description: Dac With Built-in Pll & Hp-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
3) LIN/RIN/MIN → HP-Amp
(1) PDN pin should be set to “H” at least 150ns after power is supplied. MCKI, BICK and LRCK can be stopped when
(2) PMVCM bit should be changed to “1” after PDN pin goes “H”.
(3) LINHL, MINHL, RINHR and MINHR bits should be changed to “1” after PMVCM bit is changed to “1”.
(4) When LINHL, MINHL, RINHR or MINHR bit is changed to “1”, LIN, RIN or MIN pin is biased to 0.475 x AVDD.
(5) When the 3D function is used, 3D1-0 bits should be changed to “01”, “10” or “11” after LINHL, MINHL, RINHR
(6) When the 3D function is not used, PMHPL, PMHPR and MUTEN bits should be changed to “1” at least 2ms (in case
(7) Rise time of the headphone-amp is determined by an external capacitor (C) of MUTET pin. The rise time up to
(8) Fall time of the headphone-amp is determined by an external capacitor (C) of MUTET pin. The fall time down to
MS0529-E-00
DAC is not used.
and MINHR bits are changed to “1”.
external capacitance at VCOM pin is 2.2µF) after LINHL, MINHL, RINHR and MINHR bits are changed to “1”.
When the 3D function is used, PMHPL, PMHPR and MUTEN bits should be changed to “1” at least 50ms after
3D1-0 bits are changed to “01”, “10” or “11”.
VCOM/2 is t
VCOM/2 is t
PMHPL and PMHPR bits should be changed to “0” after HPL and HPR pins go to HVSS. After that, LINHL,
MINHL, RINHR and MINHR bits should be changed to “0”.
LINHL, MINHL,
RINHR, MINHR bits
3D1-0 bits
(when 3D is used)
PMHPL/R bits
MUTEN bit
Power Supply
PDN pin
PMVCM bit
LIN/RIN/MIN pins
HPL/R pins
r
f
= 70k x C(typ). When C=1µF, t
= 60k x C(typ). When C=1µF, t
“00” (3D OFF)
Figure 28. Power-up/down sequence of LIN/RIN/MIN and HP-amp
(1) >150ns
(Hi-Z)
(2) >0s
(4)
(3) >0s
(7)
(5) >0s
(6) >2ms(at 3D OFF), >50ms(at 3D ON)
r
f
“01”, “10” or “11” (3D ON)
= 70ms(typ).
= 60ms(typ).
- 36 -
(8)
Don’t care
(Hi-Z)
“00”
(7)
(6) >2ms or >50ms
“01”, “10” or “11”
[AK4368EG]
2006/07