92HD92 Datasheet, PDF (43/306 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

92HD92
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
EAPD
(pin)
0
1
Aux
Support
Enable¹
NA
0
Port E
detect
NA
NA
1
1
0
1
1
0
Port B
detect
NA
NA
Port A, C, F,
DMIC
detect
NA
NA
0
NA
1
NA
Port D
behavior
disabled
Widget controlled
enabled
Aux+Secondary
disabled
1
1
1
0
NA
disabled
1
1
1
1
NA
disabled
1.default value for Aux Audio Enable is determined by bond option.
Port B
behavior
disabled
Widget controlled
disabled
enabled
Aux+Secondary
disabled
enabled
Aux+Secondary
Port E
behavior
disabled (mute)
Widget controlled
disabled (mute)
disabled (mute)
enabled
Aux+Secondary
disabled (mute)
2.28.8. “Record Path” Port Behavior (Digital I/O)
Digital Microphone input DMIC0 is used as an internal microphone port in normal mode. The Digital
Microphone clock pin is enabled in Aux Audio Mode and the digital microphone clock is provided by
an internal oscillator. The data on the DMIC0 pin is converted to PCM data and sent to the Auxiliary
Audio Module.
If Port F and Port A presence detect = 0, this indicates that nothing is plugged into the dock or sys-
tem and the digital microphone input is sent to the Auxiliary Audio Module. If Port A presence detect
= 1, this indicates that an external microphone is plugged into the system jack and port A is con-
verted to PCM data and sent to the Auxiliary Audio Module through the Aux_Out pin. If Port F pres-
ence detect = 1 (and Port A presence detect = 0), this indicates that an external microphone is
plugged into the dock. The PCM data from Port F will be routed to the Auxiliary Audio Module
through the Aux_Out pin.
As in normal mode, the boost and record gain functions are available in Aux Audio Mode for Port A
and DMIC0.
EAPD
(pin)
Aux
Support
Enable¹
D MIc0
detect
Port A
detect
Port F
detect
Ports B, C, E
detect
Port E behavior
0
X
X
X
X
NA
disabled
1
0
X
X
X
1
1
0
0
0
1
1
1
0
0
NA
Widget controlled
NA
Mute
NA
DMIC converted to analog and routed to module
through port E. DMIC Clock provided by CODEC
1
1
X
0
1
NA
Dock Mic routed to module (not through CODEC)
CODEC DMIC interface and Port A disabled
1.default value for Aux Audio Enable is determined by bond option.
IDT™ CONFIDENTIAL
43
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
V 1.1 1/12
92HD92