ak4390 ETC-unknow, ak4390 Datasheet - Page 20

• Manufacturer Part Number: ak4390
• Description: Ultra Low Latency 32-bit ?? Dac
• Manufacturer: ETC-unknow

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(1) RESET by RSTN bit = “0”
When the RSTN bit = “0”, the AK4390’s digital section is powered down, but the internal register values are not
initialized. The analog outputs settle to AVDD/2 (typ) and the DZF pins for both channels go to “H”. Figure 9 shows the
example of reset by RSTN bit.
Notes:
MS1046-E-00
Reset Function
(1) The analog output corresponding to digital input has group delay (GD).
(2) Analog outputs settle to AVDD/2 (typ).
(3) Click noise occurs at the edges (“↑ ↓”) of the internal timing of RSTN bit.
(4) DZF pins go to “H” when the RSTN bit is set to “0”, and return to “L” at 2/fs after the RSTN bit
(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”
(6) Mute the analog output externally if click noise (3) adversely affect system performance
This noise is output even if “0” data is input.
to the internal RSTN bit “1”.
becomes “1”.
Internal
D/A In
D/A Out
RSTN bit
Internal
RSTN bit
DZF
(Digital)
(Analog)
State
Normal Operation
(1)
Figure 9. Reset Sequence Example 1
GD
(3)
- 20 -
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)
[AK4390]
2009/01