STAC9227 Datasheet, PDF (25/237 Pages) Integrated Device Technology – 8-CHANNEL HIGH DEFINITION AUDIO CODEC

STAC9227/9228/9229/9230
8-CHANNEL HIGH DEFINITION AUDIO CODEC
PC AUDIO
Table 3. DMIC_CLK, DMIC_0 and DMIC_1 Operation During Power States
Power DMIC Widget DMIC_CLK
State Enabled?
Output
DMIC_0,1
Notes
DMIC_CLK Output is Enabled when either DMIC_0
D0
Yes
Clock Capable Input Capable or DMIC_1 Input Widget is Enabled. Otherwise, the
DMIC_CLK remains Low
DMIC_CLK Output is Enabled when either DMIC_0
D1
Yes
Clock Capable Input Capable or DMIC_1 Input Widget is Enabled. Otherwise, the
DMIC_CLK remains Low
D2
Yes
Clock Disabled Input Disabled DMIC_CLK Remains Low
D3
Yes
Clock Disabled Input Disabled DMIC_CLK Remains Low
D0-D3
No
Clock Disabled Input Disabled DMIC_CLK is HIGH-Z with Weak Pull-down
Digital
Microphone
DMIC_0
Or
DMIC_1
Off-Chip
On-Chip
DMIC_0
OR
DMIC_1
DQ
CK
Pin
DMIC_CLK
Pin
Single Line In
On-Chip
Multiplexer
STEREO
ADC0, 1 or 2
PCM
Stereo Channels
Output
Valid Data
Valid Data+1
Right
Channel
Left
Channel
DMIC_CLK
Figure 1. Single Digital Microphone (data is ported to both left and right channels)
IDT™ 8-CHANNEL HIGH DEFINITION AUDIO CODEC
25
IDT CONFIDENTIAL
STAC9227/9228/9229/9230V 1.0 MARCH 2007