92hd83 Integrated Device Technology, 92hd83 Datasheet - Page 32

• 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
AFG
Power
State
D3cold
D4
D5
92HD83
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
RESET#
De-Asserted (High)
De-Asserted (High)
De-Asserted (High)
Headphone
SD/Mute
Internal
Amp
CODEC
Figure 8. HP EAPD Example to be replaced by single pin for internal amp
Internal BTL
EAPD PIN
SD/Mute
Control
Amp
(MUTE LED ON
SAME BOARD)
UP/DOWN
BUTTONS
MUTE +
EAPD
Override
-
-
BEEP
-
HP AUDIO CONTROL BLOCK DIAGRAM
SCAN
CODES
SYNC FROM KBC TO OS
Figure 9. EAPD implementation
EAPD
Power State
-
-
-
Table 13. EAPD Behavior
SMU MUTE
KBC
VDD
32
SYNC FROM AUDIO GUI TO KBC
Pin Behavior
Pin forced low to disable external amp
Pin forced low to disable external amp
Pin Hi-Z (off)
A_EAPD
A_SD
SPKR_EN#
GPIO_1
SPKR AMP
OTHER
CODEC
OS
92HD83
SD#
Power Amp
External
PC AUDIO
V 0.96 01/09