AK4497 Datasheet, PDF (33/98 Pages) Asahi Kasei Microsystems – Quality Oriented 32-Bit 2ch DAC

[AK4497]
9. Functional Descriptions
Each function of the AK4497 is controlled by Pins (pin control mode) and Registers (register control
mode) (Table 1). Select the control mode by setting the PSN pin. The AK4497 must be powered down
when changing the PSN pin setting. There is a possibility of malfunction if the device is not powered down
when changing the control mode since the previous setting is not initialized. Register settings are invalid
in pin control mode, and pin settings are invalid in register control mode.
Table 2 shows available functions of each control mode and Table 3 shows available functions in
PCM/DSD/EXDF mode.
Table 1. Pin/Register Control Mode Select
PSN pin
Control Mode
L
Register Control Mode
H
Pin Control Mode
Table 2. Function List @Pin/Register Control Mode
Function
Pin Control Mode
Register Control
Mode
DSD/EXDF Mode Select
-
Y
System Clock Setting Select
Y
Y
Audio Format Select
Y
Y
TDM Mode
Y
Y
Digital Filter Select
Y
Y
De-emphasis Filter Select
Y
Y
Digital Attenuator
-
Y
Zero Detection
-
Y
Mono Mode
-
Y
Output signal select
(Monaural, Channel select)
-
Y
Output signal polarity select
(Invert)
Y
Y
Sound Color Select
-
Y
DSD Full Scale Detect
-
Y
Soft Mute
Y
Y
Register Reset
-
Y
Clock Synchronization Function
-
Y
Resistor Control
-
Y
Gain Control
Y
Y
Heavy Load Mode
Y
Y
(Y: Available, -: Not available)
Rev. 0.1
- 33 -
2015/11