ak4359 AKM Semiconductor, Inc., ak4359 Datasheet - Page 21

• Manufacturer Part Number: ak4359
• Description: 106db 192khz 24-bit 8ch Dac
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
When RSTN bit = “0”, internal circuit of DAC is powered down but the registers are not initialized. The analog outputs go
to VCOM voltage and DZF pins go to “H” at DZFB bit = “0”. Figure 13 shows the example of reset by RSTN bit. When
RSTN bit = “0”, pop noise is decreased at no clock state.
Notes:
MS0289-E-02
Reset Function (RSTN bit)
(1) The analog output corresponding to digital input has the group delay (GD).
(2) Analog outputs go 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”
(4) The external clocks (MCLK, BICK and LRCK) can be stopped in the reset mode (RSTN bit = “0”).
(5) DZF pins go to “H” when the RSTN bit becomes “0”, and go to “L” at 2/fs after RSTN bit becomes “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
Internal
D/A In
D/A Out
Clock In
MCLK,LRCK,BICK
RSTN bit
Internal
RSTN bit
DZF
data is input.
internal RSTN bit “1”.
(Digital)
(Analog)
State
Normal Operation
(1)
Figure 13. Reset Sequence Example (DZFB bit = “0”)
GD
(3)
Digital Block Power-down
- 21 -
3~4/fs (6)
“0” data
(4)
Don’t care
(2)
(3)
2~3/fs (6)
2/fs(5)
Normal Operation
GD
(1)
[AK4359]
2006/03