92hd83 Integrated Device Technology, 92hd83 Datasheet - Page 31

• 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
1.
AFG
Power
State
D0-D3
D0
D1
D2
D2
D3
D3
92HD83
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
Override
BEEP
When pin is enabled as Open Drain or CMOS output.
0
1
RESET#
Asserted (Low)
De-Asserted (High)
De-Asserted (High)
De-Asserted (High)
De-Asserted (High)
De-Asserted (High)
De-Asserted (High)
HP SD
1.EAPD bit is set to one by default but the EAPD state is 0 after power-on reset because the function group
Forced to low when in D2
Always follows EAPD bit
0
0
0
0
0
0
0
0
1
1
is not in D0. The state after a single or double function group reset will be compliant with ECR15b.
EAPD Pin value
or D3
HP SD
MODE
0
0
0
0
1
1
1
1
0
1
1
Override
-
-
Disabled
Enabled
Disabled
Enabled
BEEP
-
HP SD INV
Table 11. Headphone Amp Enable Configuration
Power state is ignored and EAPD pin follows EAPD bit value only to allow PC_Beep support
Follows description in HD Audio spec. External amplifier is shut down when pin or function
NA
NA
0
0
1
1
0
0
1
1
Table 12. EAPD Low Power Behavior
EAPD
Power State
-
-
D0-D1
D0-D2
D0-D2
D0-D3
D0-D3
Table 13. EAPD Behavior
EAPD Pin
group power state is D2 or D3 independent of value in EAPD bit.
State
NA
NA
0
1
0
1
0
1
0
1
31
Pin Behavior
Active low immediately after power on, otherwise the
previous state is retained across FG and link reset events
Active - Pin reflects EAPD bit unless held low by external
source.
Active - Pin reflects EAPD bit unless held low by external
source.
Pin forced low to disable external amp
Active - Pin reflects EAPD bit unless held low by external
source.
Pin forced low to disable external amp
Active - Pin reflects EAPD bit unless held low by external
source.
Amplifier follows pin/function group power state and will
Amplifier follows pin/function group power state and will
enter a low power state when disabled
Amplifier is in a low power state
Amplifier is in a low power state
in D2 and D3
Description
Amplifier is mute (default
Headphone Amp State
mute when disabled
Amplifier is active
Amplifier is active
Amplifier is active
Amplifier is active
Amplifier is mute
92HD83
1
)
PC AUDIO
V 0.96 01/09