ALC5642-VF
Datasheet
7.3. Reset
There are 2 types of reset operation: power on reset (POR) and register reset.
Table 7. Reset Operation
Reset Type
Trigger Condition
CODEC Response
POR
Monitor digital power supply voltage reach Reset all hardware logic and all registers to default
VPOR
values.
Register Reset
Write MX-00h
Reset all registers to default values except some specify
control registers and logic.
7.3.1. Power-On Reset (POR)
When powered on, DCVDD passes through the VPOR band of the ALC5642 (VPOR_ON ~VPOR_OFF). A
power on reset (POR) will generate an internal reset signal (POR reset ‘LOW’) to reset the whole chip.
Table 8. Power-On Reset Voltage
Symbol
VPOR_ON
VPOR_OFF
Min
Typical
0.8
Max
Unit
V
-
-
-
-
0.52
V
Note:
1.VPOR_OFF must be below VPOR_ON
2. ToC = 25oC
3. When DCVDD is supplied 1.2V
7.3.2. Software Reset
When MX-00h is wrote, all registers become to default value.
Multi-Channel Audio Hub/CODEC with embedded Voice
DSP and SounzRealTM Digital Sound Effect
15
Rev. 0.93
REALTEK [ Realtek Semiconductor Corp. ]
