92hd83 Integrated Device Technology, 92hd83 Datasheet - Page 24

• 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
Power State DMIC Widget
92HD83
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
Digital Mics
D1-D3
D0-D3
D0
D4
D5
0
1
2
3
4
either DMIC_0 or 1
Single Edge on the
one DMIC pin and
Enabled?
second DMIC pin.
Double Edge on
Double Edge on
Data Sample
Double Edge
Single Edge
Yes
Yes
No
-
-
rate and data sample phase will be appropriate and an audio driver will be able to configure and use
the digital microphones exactly like an analog microphone.
To conserve power, the analog portion of the ADC will be turned off if the D-mic input is selected.
When switching from the digital microphone to an analog input to the ADC, the analog portion of the
ADC will be brought back to a full power state and allowed to stabilize before switching from the dig-
ital microphone to the analog input. This should take less than 10mS.
DMIC pin widgets support port presence detect directly using SENSE-B input.
The codec supports the following digital microphone configurations:
N/A
Clock Disabled
Clock Disabled
Clock Disabled
Clock Disabled
Table 9. DMIC_CLK and DMIC_0,1 Operation During Power States
Clock Capable
DMIC_CLK
Output
ADC Conn.
0, or 1
0, or 1
0, or 1
0, or 1
N/A
Table 8. Valid Digital Mic Configurations
Input Disabled
Input Disabled
Input Disabled
Input Disabled
Input Capable
No Digital Microphones
Available on either DMIC_0 or DMIC_1
When using a microphone that supports multiplexed operation (2-mics can share
a common data line), configure the microphone for “Left” and select mono
operation using the vendor specific verb.
“Left” D-mic data is used for ADC left and right channels.
Available on either DMIC_0 or DMIC_1, External logic required to support
sampling on a single Digital Mic pin channel on rising edge and second Digital Mic
right channel on falling edge of DMIC_CLK for those digital microphones that don’t
support alternative clock edge (multiplexed output) capability.
Requires both DMIC_0 and DMIC_1, External logic required to support sampling
on a single Digital Mic pin channel on rising edge and second Digital Mic right
channel on falling edge of DMIC_CLK for those digital microphones that don’t
support alternative clock edge (multiplexed output) capability. Two ADC units are
required to support this configuration
Connected to DMIC_0 and DMIC_1, External logic required to support sampling
on a single Digital Mic pin channel on rising edge and second Digital Mic right
channel on falling edge of DMIC_CLK for those digital microphones that don’t
support alternative clock edge capability. Two ADC units are required to support
this configuration
DMIC_0,1
24
DMIC_CLK Output is Enabled when either DMIC_0 or DMIC_1
Input Widget is Enabled. Otherwise, the DMIC_CLK remains Low
DMIC_CLK is HIGH-Z with Weak Pull-down
DMIC_CLK is HIGH-Z with Weak Pull-down
DMIC_CLK is HIGH-Z with Weak Pull-down
DMIC_CLK is HIGH-Z with Weak Pull-down
Notes
92HD83
Notes
PC AUDIO
V 0.96 01/09