AsahiKASEI AK4493, Manual

Page: 35 / 104

[AK4493]
017012230-E-00 2017/12
- 35 -
9. Functional Descriptions
Each function of the AK4493 is controlled by pins (Pin Control Mode) or registers (Register Control Mode)
(
Table 1 ). Select the control mode by setting the PSN pin. The AK4493 must be powered down by the
PDN pin 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 reinitialized. 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 in 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
Digital Filter Select Y Y
De-emphasis Filter Select Y (44.1kHz only) Y
Digital Attenuator - Y
Zero Detection - Y
Mono Mode - Y
Output signal select
(Monaural Channel select)
- Y
Output signal polarity select
(Inverting)
Y Y
Sound Quality Select - Y
DSD Full-scale Detect - Y
Soft Mute Y Y
Register Reset - Y
Clock Synchronization Function - Y
Register Control - Y
Gain Control - Y
(Y: Available, -: Not Available)