IDTSTAC9751XXTAEC1XR IDT, Integrated Device Technology Inc, IDTSTAC9751XXTAEC1XR Datasheet - Page 55

• Manufacturer Part Number: IDTSTAC9751XXTAEC1XR
• Description: IC CODEC AC'97 2CH VALUE 48-LQFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Audio Codec '97r

Specifications of IDTSTAC9751XXTAEC1XR

• Resolution (bits): 18 b, 20 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• S/n Ratio, Adcs / Dacs (db) Typ: 85 / 89
• 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-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: STAC9751XXTAEC1XR

IDT™
VALUE-LINE TWO-CHANNEL AC’97 CODECS
STAC9750/9751
VALUE-LINE TWO-CHANNEL AC’97 CODECS
6.5.28.
D15
D15
D15
D7
D7
D7
1
1
0
0
6.5.27.2. ADC High Pass FIlter Bypass(78h)
Default: 0000h
Vendor ID1 and ID2 (Index 7Ch and 7Eh)
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 an IDT assigned
code identifying the STAC9750/9751. The ID1 register (index 7Ch) contains the value 8384h, which
is the first (83h) and second (84h) characters of the Microsoft ID code. The ID2 register (index 7Eh)
contains the value 7650h, which is the third (76h) of the Microsoft ID code, and 50h which is the
STAC9750/9751 ID code.
6.5.28.1. Vendor ID1 (7Ch)
Default: 8384h
6.5.28.2. Vendor ID2 76xx (7Eh)
Default: 7650h
Note: The lower half of the Vendor ID2 register (index 7Eh) currently contains the value xxh identifying the
STAC9750/9751. This value can be used by the audio driver, or miniport driver in the case of WIN98
to adjust software functionality to match the feature-set of the STAC9750/9751. This portion of the
register will likely contain different values if the software profile of the STAC9750/9751 changes, as in
the case of silicon level device modifications. This will allow the software driver to identify any required
operational differences between the existing STAC9750/9751 and any future versions.
D14
D6
D14
D14
D6
D6
0
0
1
1
D13
D5
D13
D13
D5
D5
0
0
1
0
Reserved
D12
D4
D12
D12
55
D4
D4
0
0
1
1
Reserved
D11
D3
D11
D11
D3
D3
0
0
0
0
D10
D2
STAC9750/9751
D10
D10
D2
D2
0
1
1
0
D9
D1
D9
D1
D9
D1
1
0
1
0
ADC HPF BYP
PC AUDIO
V 5.8 103106
D8
D0
D8
D0
D8
D0
1
0
0
0
®
,