92hd83 Integrated Device Technology, 92hd83 Datasheet - Page 30

• Manufacturer Part Number: 92hd83
• Description: Single Chip Pc Audio System Codec+speaker Amplifier+capless Hp+ldo
• Manufacturer: Integrated Device Technology

SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
EAPD PIN
MODE 1:0
BTL/HP SD
BTL/HP SD
MODE
BTL/HP SD INV
92HD83
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
Control Flag
BTL SD
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
MODE1
0
0
0
0
0
0
0
0
1
1
0
0
1
1
D0. The state after a single or double function group reset will be compliant with ECR15b.
Defines if EAPD pin is used as input, output, or bi-directional port (Open Drain)
0 = Amp controlled by EAPD pin only (default) / 1 = Amp controlled by power state (pin and FG) only
0 = Amp will mute when disabled. (default) / 1 = Amp will shut down (enter a low power state) when disabled
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.
BTL SD
MODE
Vendor specific verbs are available to configure this pin. These verbs retain their values across link
and single function group resets but are set to their default values by a power on reset:
MODE0
0
0
0
0
1
1
1
1
0
1
0
1
0
1
BTL SD INV
EAPD Pin Function
NA
NA
0
0
1
1
0
0
1
1
Open Drain I/O
CMOS Output
CMOS Input
CMOS Input
EAPD Pin
State
Table 10. BTL Amp Status
NA
NA
0
1
0
1
0
1
0
1
External signal controls internal amps. EAPD bit in pin widget ignored
External signal controls internal amps. EAPD bit in pin widget ignored
Amplifier follows pin/function group power state and will enter a
Value at pin is wired-AND of EAPD bit and external signal. (default)
Amplifier follows pin/function group power state and will mute
30
Description
Value of EAPD bit in pin widget is forced at pin
Amplifier is in a low power state
Amplifier is in a low power state
low power state when disabled
Amplifier is mute (default
Amplifier is active
Amplifier is active
Amplifier is active
Amplifier is active
Amplifier is mute
when disabled
Amp State
Description
92HD83
1
)
PC AUDIO
V 0.96 01/09