92hd89c Integrated Device Technology, 92hd89c Datasheet - Page 24

• Manufacturer Part Number: 92hd89c
• Description: Six Channel Hd Audio Codec
• Manufacturer: Integrated Device Technology

92HD89C
Six channel HD Audio codec optimized for low power
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
IDT™ CONFIDENTIAL
Power State DMIC Widget
Digital Mics
D1-D3
D0-D3
D0
D4
D5
0
1
2
Enabled?
Data Sample
Single Edge
Yes
Yes
No
-
-
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.
The codec supports the following digital microphone configurations:
N/A
N/A
Clock Capable Input Capable
DMIC_CLK
Disabled
Disabled
Disabled
Disabled
Output
Clock
Clock
Clock
Clock
ADC Conn.
0, or 1
0, or 1
N/A
Input Disabled DMIC_CLK is HIGH-Z with Weak Pull-down
Input Disabled DMIC_CLK is HIGH-Z with Weak Pull-down
Input Disabled DMIC_CLK is HIGH-Z with Weak Pull-down
Input Disabled DMIC_CLK is HIGH-Z with Weak Pull-down
No Digital Microphones
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.
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.
DMIC_0,1
24
DMIC_CLK Output is Enabled when DMIC_0 Input Widget is
Enabled. Otherwise, the DMIC_CLK remains Low
Notes
Notes
V 0.91 08/09
92HD89C