STAC9766XXTAEC1X IDT, Integrated Device Technology Inc, STAC9766XXTAEC1X Datasheet - Page 79

• Manufacturer Part Number: STAC9766XXTAEC1X
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of STAC9766XXTAEC1X

• Single Supply Voltage (typ): 3.3/5V
• Single Supply Voltage (min): 3.135/4.75V
• Single Supply Voltage (max): 3.465/5.25V
• Package Type: TQFP
• Lead Free Status / RoHS Status: Compliant

IDT™
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
STAC9766/9767
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
8.5.
8.4.12.
8.4.13.
Vendor ID1 and ID2 (Index 7Ch and 7Eh)
Bit(s) Reset Value
Bit(s) Reset Value
15:1
15:7
0
6
RSVD
D15
D15
D7
D7
High Pass Filter Bypass (78h*)
To unlock portion of Register 78h, write 0xABBA to Register 76h.
Default: 0000h
Stereo Mic Enable Register (78h*)
To unlock portion of Register 78h, write 0x7272 to Register 72h.
Default: 0000h
These two registers contain four 8-bit ID codes. The first three codes have been assigned by
Microsoft using their Plug and Play Vendor ID methodology. The fourth code is a IDT, Inc. assigned
code identifying the STAC9766/9767. The ID1 register (index 7Ch) contains the value 8384h, which
is the first (83h) and second (84h) bytes of the Microsoft ID code. The ID2 register (index 7Eh) con-
tains the value 7666h, which is the third (76h) byte of the Microsoft ID code, and 66h which is the
STAC9766/9767 ID code.
0
0
0
0
STEREO_
D14
D14
MIC
D6
D6
ADC HPF BYP
STEREO_MIC
RESERVED
RESERVED
Name
Name
D13
D13
D5
D5
Bits not used, should read back 0
0 = Normal operation, (ADC High Pass Filter active)
1 = ADC High Pass Filter Bypass
Bits not used, should read back 0
0 = Stereo Mic Disabled (default)
1 = Stereo Mic Enabled
RESERVED
D12
D12
D4
D4
79
RESERVED
RESERVED
D11
D11
D3
D3
RESERVED
Description
Description
D10
D10
STAC9766/9767
D2
D2
D9
D1
D9
D1
ADC HPF BYP
PC AUDIO
D8
D0
D8
D0
V 7.4 12/06