STAC9228 Integrated Device Technology, STAC9228 Datasheet - Page 25

• Manufacturer Part Number: STAC9228
• Description: Theater Quality Eight Channel High Definition Audio Codec With Digital Microphone Interface
• Manufacturer: Integrated Device Technology

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