IDTSTAC9766XXTAEC1X IDT, Integrated Device Technology Inc, IDTSTAC9766XXTAEC1X Datasheet - Page 72

• Manufacturer Part Number: IDTSTAC9766XXTAEC1X
• Description: IC CODEC AC'97 2CH 2.3 48-TQFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Audio Codec '97r

Specifications of IDTSTAC9766XXTAEC1X

• Data Interface: Serial
• Resolution (bits): 20 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• S/n Ratio, Adcs / Dacs (db) Typ: 85 / 95
• Voltage - Supply, Analog: 3.14 V ~ 3.47 V; 4.75 V ~ 5.25 V
• Voltage - Supply, Digital: 3.14 V ~ 3.47 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP, 48-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: STAC9766XXTAEC1X

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
8.4.5.
Bit(s) Reset Value
14-11
15
10
Function Code
D15
DL2
G4
D7
Function Information (68h
Register 24h must be set to Page 01h to access this register.
Default: 00xxh, see table 24: page73.
Note: This register does not reset on RESET#.
00h
01h
05h
06h
0
0
D14
DL1
G3
D6
G3:G0
Name
INV
G4
Headphone_Out
Table 23. Supported Jack and Mic Sense Functions
Line_Out
D13
DL0
G2
D5
Mic1
Mic2
Gain Sign Bit: The CODEC updates this bit with the sign of the gain value
present in G[3:0]. The BIOS updates this to take into consideration external
amplifiers or other external logic when relevant.
G[4] indicates whether the value is a gain or attenuation.
Gain in the G4 bit is in terms of dB.
This bit is Read/Write and only reset on POR and not by RESET#.
Gain Bits: The CODEC updates these bits with the gain value (dB relative to
level-out) in 1.5dBV increments. The BIOS updates these to take into
consideration external amplifiers or other external logic when relevant.
G[0:3] indicates the magnitude of the gain. G[4] indicates whether the value is a
gain or attenuation.
For Gain/Attenuation settings, see Table 25: page74.
These bits are read/write and are not reset on RESET#.
Inversion bit: Indicates that the CODEC presents a 180 degree phase shift to the
signal.
0h - No inversion reported
1h - Inverted
This bit is read/write and is not reset on RESET#.
BIOS should invert for each inverting gain stage.
I/O
Page 01h
D12
72
G1
D4
IV
)
D11
G0
D3
Description
RESERVED
Sense Capability
STAC9766/9767
D10
INV
D2
Jack Sense
Jack Sense
Mic Sense
Mic Sense
DL4
D9
D1
PC AUDIO
V 7.4 12/06
DL3
FIP
D8
D0