92HD87 Datasheet, PDF (11/204 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

92HD87
SINGLE CHIP PC AUDIO SYSTEM, CODEC+STEREO SPEAKER AMPLIFIER+CAPLESS HP+LDO
2. DETAILED DESCRIPTION
2.1. Port Functionality
Multi-function (Input / output) ports allow for the highest possible flexibility. 3 or 4 bi-directional ports,
2 headphone ports, and a high power BTL amplifier support a wide variety of consumer desktop and
mobile system use models.
For the codec the port capabilities are as follows
• Port A supports
• Headphone
• Line Out
• Line Input
• Mic with 0/10/20/30 dB Boost and Vref_Out
• Port B supports
• Capless Headphone Out
• Capless Line Out
• Port C supports
• Line Out (not available on TB revision)
• Line In
• Mic with 0/10/20/30 dB boost and Vref_Out
• Port D supports
• BTL (L+/L-) stereo out
• Port F supports
• Line Out
• Line In
• Mic with 0/10/20/30 dB boost
Pins
Port
Input
Output Headphone
BTL
24/23
27/26
15/16
35/36
13/14
3
A
B
C
D
F
DMIC0
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Table 1. Port Functionality
Mic Bias
(Vref pin)
Yes
Input
boost amp
Yes
Yes
Yes
Yes
Yes
2.1.1.
Port Characteristics
Universal (Bi-directional) jacks are supported on ports C (input only on TB revision) and F. Port A is
birdirectional also. Ports A and B are designed to drive 32 ohm (nominal) headphones or a 10K
(nominal) load. Line Level outputs are intended to drive an external 10K load (nominal) and an on
board shunt resistor of 20-47K (nominal). However, applications may support load impedances of 5K
ohms and above. Input ports are 50K (nominal) at the pin.
DAC full scale outputs and intended full scale input levels are 1V rms at 5V. Line output ports and
Headphone output ports on the codec may be configured for +3dBV full scale output levels by using
a vendor specific verb.
IDT CONFIDENTIAL
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©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
V 0.995 01/11
92HD87