ak4380 AKM Semiconductor, Inc., ak4380 Datasheet - Page 15

• Manufacturer Part Number: ak4380
• Description: 100db 24bit 96khz 2ch Dac
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
n Reset Function
When RSTN = “0”, the AK4380’s digital section is powered down but the internal register values are not initialized. The
analog outputs go to VCOM voltage and DZF pin goes to “H”. Figure 7 shows the example of reset by RSTN bit.
Notes:
MS0018-E-01
(4) The external clocks (MCLK, BICK and LRCK) can be stopped in the reset mode (RSTN = “L”).
(1) The analog output corresponding to the digital input has a group delay, GD.
(2) Analog outputs go to VCOM voltage.
(5) DZF pin goes to “H” when the RSTN bit becomes to “0”, and goes to “L” at 2/fs after RSTN bit becomes to “1”.
(6) 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
(3) Click noise occurs at the edges(“
Internal
D/A In
D/A Out
Clock In
MCLK,LRCK,BICK
RSTN bit
Internal
RSTN bit
DZF
input.
internal RSTN “1”.
(Digital)
(Analog)
State
Normal Operation
(1)
Figure 7. Reset sequence example
”) of the internal timing of RSTN bit. This noise is output even if “0” data is
GD
(3)
Digital Block Power-down
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3~4/fs (6)
“0” data
(4)
Don’t care
(2)
(3)
2~3/fs (6)
2/fs(5)
Normal Operation
GD
(1)
[AK4380]
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