92HD001 데이터 시트보기 (PDF) - Integrated Device Technology

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92HD001

2-CHANNEL HIGH DEFINITION AUDIO CODEC

Integrated Device Technology 

92HD001

2-CHANNEL HIGH DEFINITION AUDIO CODEC

PC AUDIO

3. EXTENDED FEATURE EXPLANATION

3.1.

SPDIF Input

SPDIF IN can run at 44.1 KHz, 48 KHz and 96 KHz, and has internal Jack Sensing.

A sophisticated digital PLL allows automatic rate detection and accurate data recovery. The ability to

directly accept consumer SPDIF voltage levels eliminates the need for costly external receiver ICs.

Advanced features such as record slot select and SPDIF_IN routing to the DAC allows for simulta-

neous record and play.

3.2.

SPDIF Output

SPDIF Output can run at 44.1 KHz, 48 KHz, and 96 KHz at bit rates up to 24 bits, as defined in the

Intel High Definition Audio Specification. This insures compatibility with all consumer audio gear and

allows for convenient integration into home theater systems and multi-media centers.

3.3.

Universal JacksTM

IDT’s Universal JacksTM technology allows for the greatest flexibility in board design and implemen-

tation.

For the 92HD001 the Universal JacksTM capabilities are as follows

• All of the 92HD001 ports support:

• Line Out

• Line In

• Mic with 0/10/20/30/40 dB Mic Boost

• Ports A and D also support

• Headphone Out1

1Headphone capabilities are available on pins 39/41 and 35/36, but one should not put headphone

loads on both sets of pins at the same time.

Note: On the 92HD001 only one function can be selected at a time, you cannot have an input

and output at the same time on the same set of pins. This function can be changed at any time.

3.4. Audio Jack Presence Detect

Sense_A pin is used to detect the presence of plugs in ports A, B, C, and D. Refer to the reference

design for port detect circuitry. Select the precision of the resistors used as follows:

AVDD Nominal Voltage

(+- 5%)

5V

4.5V

4V

3.3V

Resistor Tolerance

(If Port D is used)

1%

1%

0.50%

0.10%

Resistor Tolerance

(If Port D is not used)

1%

1%

1%

1%

Includes pull-up resistors on Sense A and series resistors between jack switch and Sense A.

IDT™ 2-CHANNEL HIGH DEFINITION AUDIO CODEC

19

IDT CONFIDENTIAL

92HD001

V 1.1 01/08

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