92hd005 Integrated Device Technology, 92hd005 Datasheet - Page 15

• Manufacturer Part Number: 92hd005
• Description: Four Channel Hd Audio Codec
• Manufacturer: Integrated Device Technology

IDT™
4-CHANNEL HD AUDIO CODEC WITH QUAD DIGITAL MICROPHONE INTERFACE
Digital
92HD005/92HD005D
4-CHANNEL HD AUDIO CODEC WITH QUAD DIGITAL MICROPHONE INTERFACE
Mics
Power
D0-D3
State
0
1
2
3
4
D0
D1
D2
D3
Double Edge on either DMIC_0 or
and Single Edge on the second
Double Edge on one DMIC pin
Single Edge on DMIC_0 and 1
Double Edge (see Figure 5)
Enabled?
Single Edge (see Figure 3)
Widget
DMIC
Yes
Yes
Yes
Yes
No
1 (see Figure 4)
Data Sample
DMIC pin.
N/A
OR
Clock Disabled
Clock Disabled
Clock Disabled
Clock Disabled
Clock Capable
DMIC_CLK
Table 2. DMIC_CLK, DMIC_0 and DMIC_1 Operation During Power States
Output
Table 1. 92HD005/92HD005D Valid Digital Microphone Configurations
DMIC_0,1
Disabled
Disabled
Disabled
Disabled
Capable
Conn.
0 or 1
0 or 1
0 or 1
0 or 1
Input
Input
Input
Input
Input
ADC
N/A
No Digital Microphones
Available on either DMIC_0 or DMIC_1
Both ADC Channels process data, may be in-phase or out-of-phase by 1/2
DMIC_CLK period depending upon external configuration and timing
Available on either DMIC_0 or DMIC_1
External logic required to support sampling on a single Digital Microphone pin
channel on rising edge and second Digital Microphone right channel on falling
edge of DMIC_CLK for those digital microphones that don’t support alternative
clock edge capability. If both DMIC_0 and DMIC_1 are used to support 2 digital
microphones, 2 separate ADC units will be used, however, this configuration is
not recommended since it consumes two stereo ADC resources.
Requires both DMIC_0 or DMIC_1
External logic required to support sampling on a single Digital Microphone pin
channel on rising edge and second Digital Microphone 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
Connected to DMIC_0 and DMIC_1
External logic required to support sampling on a single Digital Microphone pin
channel on rising edge and second Digital Microphone 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_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.
DMIC_CLK remains low
DMIC_CLK remains low
DMIC_CLK is HIGH-Z with weak pull-down
15
Notes
Notes
92HD005/92HD005D
PC AUDIO
V 1.1 4/08