92HD81 Datasheet, PDF (35/279 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

92HD81
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
2.23.2.1. When Port E Aux Audio Out presence detect = 0
• Presence detect for Port E = 0 (nothing plugged in)
• Port F Aux Audio input is routed to Port A, B, or D when that port is active.
• If either Port A or Port B is in use (port presence detect = 1), Port D, internal speakers, will be
inactive (off)
• The power supply for Port A and B will be active if either A or B is in use but if only one of the two
ports is in use, the other may be turned off to save power.
• If neither Port A nor Port B is in use (port presence detect = 0), Port D, internal speakers, will be
active and ports A and B will be inactive.
• EAPD is used to indicate if AUX Audio Mode is in use.
2.23.2.2. When Port E Aux Audio Out presence detect = 1
• Presence detect for Port E = 1 (something plugged in)
• Port F Aux Audio input is routed to Ports A, B
• Port D is disabled
• If either Port A or Port B is in use (port presence detect = 1), that port will be enabled and output
the audio entering Port F.
• The power supply for Port A and B will be active if either A or B is in use but if only one of the two
ports is in use, the other may be turned off to save power.
• If neither Port A nor Port B is in use (port presence detect = 0), ports A and B will be inactive and
the audio on Port F will play through the dock using resources outside of the CODEC.
• EAPD is used to indicate if AUX Audio Mode is in use.
MixerOutVol
mute
Vol
-46.5 to 0 dB
In 1.5 dB steps

Mixer and output ports forced on.
Output sent to BTL amp by default but
changed to HP if presence detect
shows HP.
Digital PC Beep
MixerOutVol
DAC0
DAC1
DAC2
Digital PC Beep
MixerOutVol
DAC0
DAC1
DAC2
Digital PC Beep
MixerOutVol
DAC0
DAC1
DAC2
mute
vol
mute
vol
mute
vol
mute
vol
mute
vol
mute
vol
-34.5 to +12 dB
In 1.5 dB steps
Port A
DAC0
DAC1
Port C
Port E
Port F
Analog Beep

Analog Beep

Analog Beep

(Disabled)
(Disabled)
(Disabled)
(Disabled)
(Disabled)
HP
PORT A
HP Jack
Pin Complex
Pins 28/29
HP
Class-AB
BTL
PORT B
Pin Complex
Pins 31/32
HP Jack
PORT D
Pin Complex
Pins 39/41/43/44
Internal
Speakers
(Disabled if port A,
B, or E in use)
LO
Boost
+0/+10/+20/+30 dB
Mic Bias
(Black River / Hendrix)
PORT F
Aux Audio In
Pin Complex
Pins 17/18
IDT CONFIDENTIAL
35
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
V 0.995 01/11
92HD81