92HD92 Datasheet, PDF (13/306 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

92HD92
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
DAC full scale outputs and intended full scale input levels are 1V rms at 5V. Line output ports and
Headphone output ports on the 92HD92 codec may be configured for +3dBV full scale output levels
by using a vendor specific verb.
Output ports are always on to prevent pops/clicks associated with charging and discharging output
coupling capacitors. This maintains proper bias on output coupling caps even in power state D3 as
long as AVDD is available. Unused ports should be left unconnected. When updating existing
designs to use the codec, ensure that there are no conflicts between the output ports on the codec
and existing circuitry.
AFG
Power
State
D0-D2
D3
D3cold
D4
D5
Input Output Used as output
Enable Enable for DAC/Mixer
Used as output
for analog
PC_Beep
Used as
input for
ADC, mixer
Port Behavior
1
1
Don't care
Don't care
Yes
Not allowed. Port is active as input.
No
Not allowed. Inactive (Power Down) - Port keeps
output coupling caps charged if port uses caps.
1
0
NA
NA
Yes
Active - Port enabled as input
1
0
NA
NA
No
Inactive (Power Down) - Port keeps output coupling
caps charged if port uses caps.
currently used by DAC, mixer,
0
1
beep, or is traditional line or
headphone output
NA
0
1
not currently used by DAC, mixer,
beep and is capless HP/BTL port
Active - Port enabled as output
Inactive (Power Down)
0
0
NA
NA
NA
Inactive (Power Down) - Port keeps output coupling
caps charged if port uses caps.
1
1
NA
NA
Don't care
Not allowed. Inactive (Power Down) - Port keeps
output coupling caps charged if port uses caps.
1
0
NA
NA
Don't care
Inactive (Power Down) - Port keeps output coupling
caps charged if port uses caps.
0
1
currently used by DAC, mixer,
beep, or is traditional line or
headphone output
Don't care
Low power state. If enabled, Beep will output from
the port
0
1
not currently used by DAC, mixer,
beep and is capless HP/BTL port
Don't care
Inactive (Power Down)
0
0
NA
NA
Don't care
Inactive (Power Down) - Port keeps output coupling
caps charged if port uses caps.
-
-
Inactive (lower power) - Port keeps output coupling
caps charged if port uses caps.
-
-
Inactive (lower power) - Port keeps output coupling
caps charged if port uses caps.
-
-
Off - Charge on coupling caps (if used) will not be
maintained.
Table 2. Analog Output Port Behavior
IDT CONFIDENTIAL
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©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
V 1.1 1/12
92HD92