92HD92 Datasheet, PDF (23/306 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

92HD92
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
MODE1
0
0
1
1
MODE0
0
1
0
1
EAPD Pin Function
Open Drain I/O
CMOS Output
CMOS Input
CMOS Input
Description
Value at pin is wired-AND of EAPD bit and external signal.(default)
Value of EAPD bit in pin widget is forced at pin
External signal controls internal amps. EAPD bit in pin widget ignored
External signal controls internal amps. EAPD bit in pin widget ignored
Table 9. EAPD Pin Mode Select
Control Flag
Description
EAPD PIN MODE 1:0 Defines if EAPD pin is used as input, output, or bi-directional port (Open Drain)
BTL/HP SD
0 = Amp controlled by EAPD pin only (default) / 1 = Amp controlled by power state (pin and FG) only
BTL/HP SD MODE
0 = Amp will mute when disabled./ 1 = Amp will shut down (enter a low power state) when disabled (default
for YA forward)
BTL/HP SD INV
0 = AMP will power down (or mute) when EAPD pin is low (default) / 1 = Amp will power down (or mute)
when EAPD pin is high.
Table 10. Control bit descriptions for BTL amplifier and Headphone amplifier enable configurations
BTL SD
0
0
0
0
0
0
0
0
1
1
BTL SD
MODE
0
0
0
0
1
1
1
1
0
1
BTL SD INV
0
0
1
1
0
0
1
1
NA
NA
EAPD Pin
State
0
1
0
1
0
1
0
1
NA
NA
BTL Amp State
Amplifier is mute (default¹)
Amplifier is active
Amplifier is active
Amplifier is mute
Amplifier is in a low power state
Amplifier is active
Amplifier is active
Amplifier is in a low power state
Amplifier follows pin/function group power state and will mute when disabled
Amplifier follows pin/function group power state and will enter a low power
state when disabled
Table 11. BTL Amp Enable Configuration
1. EAPD bit is set to one by default but the EAPD state is 0 after power-on reset because the function group is not in D0. The
state after a single or double function group reset will be compliant with HDA015-B.
HP SD
0
0
0
0
0
0
HP SD
MODE
0
0
0
0
1
1
HP SD INV
0
0
1
1
0
0
EAPD Pin
State
0
1
0
1
0
1
Headphone Amp State
Amplifier is mute (default¹)
Amplifier is active
Amplifier is active
Amplifier is mute
Amplifier is in a low power state
Amplifier is active
Table 12. Headphone Amp Enable Configuration
IDT CONFIDENTIAL
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92HD92