AK4359A AKM [Asahi Kasei Microsystems], AK4359A Datasheet - Page 21

• Manufacturer Part Number: AK4359A
• Description: 106dB 192kHz 24-Bit 8ch DAC
• Manufacturer: AKM [Asahi Kasei Microsystems]

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When the RSTN bit = “0”, internal circuit of DAC is powered down but the registers are not initialized. The analog
outputs settle to VCOM voltage and the DZF pins go “H” at DZFB bit = “0”.
Figure 13
Notes:
MS1010-E-01
Reset Function (RSTN bit)
(1) The analog output corresponding to digital input has group delay (GD).
(2) Analog outputs settle to VCOM voltage.
(3) Small pop noise occurs at the edges(“↑ ↓”) of the internal timing of RSTN bit. This noise is output even if “0”
(5) There is a delay, 3~4/fs from RSTN bit “0” to the internal RSTN bit “0”, and 2~3/fs from RSTN bit “1” to the
(6) Mute the analog output externally if click noise (3) and Hi-Z (2) adversely affect system performance
(4) The DZF pins change to “H” when the RSTN bit becomes “0”, and return to “L” at 2/fs after RSTN bit becomes
Internal
D/A In
D/A Out
RSTN bit
Internal
RSTN bit
DZF
“1”.
data is input.
internal RSTN bit “1”.
(Digital)
(Analog)
shows the example of reset by RSTN bit. When RSTN bit = “0”, pop noise is reduced at no clock state.
State
Normal Operation
(1)
Figure 13. Reset Sequence Example (DZFB bit = “0”)
GD
(3)
- 21 -
3~4/fs (5)
D igital Block
P
“0 ” data
(6)
(2)
d
(3)
2~3/fs (5)
2/ fs(4)
Normal O peration
GD
(1)
[AK4359A]
2008/10