IDTSTAC9273X5TAEA2X IDT, Integrated Device Technology Inc, IDTSTAC9273X5TAEA2X Datasheet - Page 26

• Manufacturer Part Number: IDTSTAC9273X5TAEA2X
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDTSTAC9273X5TAEA2X

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

3. DETAILED DESCRIPTION
IDT™
STAC9271/9274
10-CHANNEL HIGH DEFINITION AUDIO CODEC
3.1.
10-CHANNEL HIGH DEFINITION AUDIO CODEC
Universal Jacks
3.1.1.
IDT’s Universal Jacks
tation.
•
•
Note
be configured as an input and output at the same time. Configuration can be changed at any time.
Note
when using 2 Headphones simultaneously. See electrical specs for details.
Note
result in significant audio quality degradation of the microphone audio input. In particular, when the
40dB MIC boost is active, the SNR, THD+N and DC offset will significantly degrade regardless of the
input signal level.
Audio Jack Presence Detect
SENSE_A pin is used to detect the presence of plugs in ports A, B, C, and D. SENSE_B pin is used
to detect the presence of plugs in ports E, F, G, ad H. Refer to the reference design for port detect
circuitry. Select the precision of the resistors used as follows:
Impedance Sense is accomplished by on-chip circuitry that measures the impedance at the pin of
the chip and compares it to internal reference impedance. Below is a table that contains the bin infor-
mation and codes returned when the pin widget impedance field in the Port Pin Sense widget is
read. Please note that even under the best conditions, there is no method to guarantee 100%
impedance sensing due to variations in external circuitry and impedance overlap of devices that can
be plugged into a jack. The impedance sense table reflects both standard Line Out and Headphone
AVDD Nominal
Voltage (+-5%)
Ports A, B, and D support
• Headphone Out
• Line Out
• Line In
• Mic with 0/10/20/30/40 dB Mic boost
Ports C, E, F, G, H support
• Line Out
• Line In
• Mic with 0/10/20/30/40 dB Mic boost
1
2
3
: Only one function can be selected on each pin pair at a time. For example, a pin pair cannot
: Three Headphones should not be used simultaneously. Performance degradation will occur
: When the 40dB mic boost feature is enabled, additional gain increases greater than 6dB may
4.5V
3.3V
5V
4V
• Ports G & H do not have VrefOut Support
TM
Resistor Tolerance
(If Port D is used)
TM
Sense A
0.50%
0.10%
1%
1%
technology allows for the greatest flexibility in board design and implemen-
Table 1. Impedance Sense
2
2
IDT CONFIDENTIAL
:
:
(If Port D is not used)
Resistor Tolerance
26
3
3
Sense A
1%
1%
1%
1%
Resistor Tolerance
(If Port H is used)
STAC9271/9274
Sense B
0.50%
0.10%
1%
1%
(If Port H is not used)
Resistor Tolerance
Sense B
1%
1%
1%
1%
PC AUDIO
V 1.1 01/08