92HD87B2X5NDGXTBX IDT, Integrated Device Technology Inc, 92HD87B2X5NDGXTBX Datasheet - Page 12

• Manufacturer Part Number: 92HD87B2X5NDGXTBX
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 92HD87B2X5NDGXTBX

• Lead Free Status / RoHS Status: Compliant

IDT PROPRIETARY / IDT
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
92HD87
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
AFG Power State
D0-D2
D3
D3cold
D4
D5
2.1.2.
2.1.3.
Input Enable
CONFIDENTIAL
DAC full scale outputs and intended full scale input levels are 1V rms at 5V. Line output ports and
Headphone output ports on the 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.
Vref_Out
Ports C & A support Vref_Out pins for biasing electret cartridge microphones. Settings of 80%
AVDD, 50% AVDD, GND, and Hi-Z are supported. Attempting to program a pin widget control with a
reserved or unsupported value will cause the associated Vref_Out pin to assume a Hi-Z state and
the pin widget control Vref_En field will return a value of ‘000’ (Hi-Z) when read.
Jack Detect
Plugs inserted to a jack on Ports A, B, C are detected using SENSE_A. Plugs inserted to a jack on
Ports F, DMIC0, are detected using SENSE_B. Per HDA015-B, the detection circuit operates when
the CODEC is in D0 - D3 and can also operate if both the CODEC and Controller are in D3 (no bus
clock.) Jack detection requires that all supplies (analog and digital) are active and stable. When
AVDD is not present, the value reported in the pin widget is invalid.
When the HD Audio bus is in a low power state (reset asserted and clock stopped) the CODEC will
generate a Power State Change Request when a change in port connectivity is sensed and then
generate an unsolicited response after the HD Audio link has been brought out of a low power state
and the device has been enumerated. Per HDA015-B, this will take less than 10mS.
The following table summarizes the proper resistor tolerances for different analog supply voltages.
1
1
0
0
-
-
-
-
-
Voltage (+/- 5%)
AVdd Nominal
Output Enable
4.75V
1
0
1
0
0
1
-
-
-
Table 2. Analog Output Port Behavior
Resistor Tolerance
Port Behavior
Not allowed. Port is active as output. Input path is mute.
Active - Port enabled as input
Active - Port enabled as output
Inactive -port is powered on (low output impedance) but drives silence only.
Inactive (lower power) - Port keeps output coupling caps charged if port uses caps.
Low power state. If enabled, Beep will output from the port
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.
Pull-Up
1%
12
Resistor Tolerance
SENSE_A/B
1%
92HD87
PC AUDIO
V 0.95 10/10