STAC9752 datasheet(75/95 Pages) IDT

75 / 95 page

STAC9752/9753

TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING

IDT™

STAC9752/9753

REV 3.3 1206

TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING

7-6

OR1:0

Order Bits. These bits indicate the order the sense result bits SR[5:0] are using.

00 - 10

(i.e., Ohms)

01 - 10

(i.e., 10 Ohms)

10 - 102 (i.e., 100 Ohms)

11 - 10

(i.e., 1K Ohms)

5-0

SR5:SR0

Sense Result bits

These bits are used to report a vendor specific fingerprint or value. (Resistance,

impedance, reactance, etc.). This field is Read Only.

Table 25. Sensed Bits (Outputs)

Reported Value

Output Peripheral/Device

Data not valid. Indicates that the reported value(s) is (are) invalid.

No connection. Indicates that there are no connected devices.

Fingerprint. Indicates a specific fingerprint value for devices that are not specified or unknown.

Speakers (8 ohms)

Speakers (4 ohms)

Powered Speakers

Stereo Headphone

Reserved

Headset (mono speaker left channel and microphone.)

Other. Allows a vendor to report sensing other type of devices/peripherals. SR[5:0] together with

OR[1:0] provide information regarding the type of device sensed.

Bh-Eh

Reserved

Unknown (use fingerprint)

Table 26. Sensed Bits (Inputs)

Reported Value

Input Peripheral/Device

Data not valid. Indicates that the reported value(s) is (are) invalid.

No connection. Indicates that there are no connected devices.

Fingerprint. Indicates a specific fingerprint value for devices that are not specified.

Microphone (mono)

Reserved

Stereo Line In (CE device attached)

Reserved

Headset (mono speaker left channel and microphone.)

Other. Allows a vendor to report sensing other type of devices/peripherals. SR[5:0] together with

OR[1:0] provide information regarding the type of device sensed.

Bh-Eh

Reserved

Unknown (use fingerprint)

Bit(s) Reset Value

Name

Description

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