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AK4436 Datasheet, PDF (43/63 Pages) Asahi Kasei Microsystems – 108dB 768kHz 32bit 6-Channel Audio DAC | |||
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[AK4436]
(2) Reset Function (RSTN bit)
The DAC can be reset by setting RSTN bit to â0â but the internal registers are not initialized. In this time,
the corresponding analog outputs go to VCOM and the DZF pin outputs âHâ if clocks (MCLK, BICK and
LRCK) are input. Figure 33 shows an example of reset sequence by RSTN bit.
RSTN bit
Internal
RSTN bit
3~4/fs (5)
2~3/fs
Internal
State
D/A In
(Digital)
D/A Out
(Analog)
Clock In
BICK
DZF
Normal Operation
(1)
GD
Digital Block
Power-down
â0â data
(3) (2)
Normal Operation
GD (1)
(3)
Donât care
2/fs (4)
Notes:
(1) he analog output corresponding to digital input has group delay (GD).
(2) Analog outputs are VCOM in power down mode.
(3) Click noise occurs at the edges (âï ï¯â) of the internal timing of RSTN bit. This noise is output even
if â0â data is input.
(4) The DZF pin goes to âHâ on the falling edge of RSTN bit and goes to âLâ in 2/fs after a rising edge
of the internal RSTN.
(5) There is a delay, 3~4/fs from RSTN bit â0â to the internal RSTN bit â0â, and 2~3/fs from RSTN bit
â1â to the internal RSTN bit â1â.
Figure 33. Reset Sequence Example
016001934-E-00
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2016/03
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