IDTSTAC9753AXNAED1X IDT, Integrated Device Technology Inc, IDTSTAC9753AXNAED1X Datasheet - Page 81

• Manufacturer Part Number: IDTSTAC9753AXNAED1X
• Description: IC CODEC AC'97 MIC/JACK 32-QFN
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Audio Codec '97r

Specifications of IDTSTAC9753AXNAED1X

• Resolution (bits): 20 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• S/n Ratio, Adcs / Dacs (db) Typ: 85 / 92
• 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: 32-QFN
• Single Supply Voltage (typ): 3.3/5V
• Single Supply Voltage (min): 3.135V
• Single Supply Voltage (max): 3.465/5.25V
• Package Type: VFQFPN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: STAC9753AXNAED1X

IDT™
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
STAC9752A/9753A
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
7.4.10.
Bit(s) Reset Value
Bit(s) Reset Value
15:8
INT APOP
6:0
5:4
7
3
2
1
0
D15
D7
Analog Current Adjust (72h)
To unlock Register 72h, write 0xABBA to Register 70h.
Default: 0000h
0
0
0
0
0
0
0
0
D14
D6
MIC GAIN VAL
INT_APOP
SPLYOVR_EN
SPLYOVR_VA
Reserved
Reserved
ADCSLT1:0
Name
Reserved
Name
L
D13
D5
Reserved
0 = Anti Pop Enabled
1 = Anti Pop Disabled
The STAC9752A/9753A includes an internal power supply anti-pop circuit that
prevents audible clicks and pops from being heard when the CODEC is powered
on and off. This function is accomplished by delaying the charge/discharge of the
VREF capacitor (Pin 27). C
roughly 3 seconds, which will allow the power supplies to stabilize before the
CODEC outputs are enabled. The delay will be extended to 30 seconds if a value
of C
same amount of time at power-off to allow the system to be gracefully turned off.
The INT_APOP bit allows this delay circuit to be bypassed for rapid production
testing. Any external component anti-pop circuit is unaffected by the internal
circuit.
Reserved
Select slots for ADC data on ACLINK
00 = left slot 3, right slot 4
01 = left slot 7, right slot 8
10 = left slot 6, right slot 9
11 = left slot 10, right slot 11
Reserved
Adds +10dB gain to the selected MIC input. Use in conjunction with
BOOSTEN (Reg. 0Eh;D6)
BOOSTEN MICGAINVAL
Supply Override bit allows override of the supply detect.
0 = no override on supply detect
1 = override supply detect with bit 0
Supply Override Value provides the analog voltage operation values.
0 = force 3.3 V operation
1 = force 5 V operation
VREF
0
0
1
1
value of 10 F is used. The CODEC outputs are also kept stable for the
D12
D4
81
Reserved
0
1
0
1
Reserved
VREF
D11
D3
value of 1 F will cause a turn-on delay of
Description
Description
= 10 dB
= 20 dB
= 30 dB
=
STAC9752A/9753A
0 dB
D10
D2
D9
D1
PC AUDIO
V 1.5 1206
D8
D0