92hd89c Integrated Device Technology, 92hd89c Datasheet - Page 14

• Manufacturer Part Number: 92hd89c
• Description: Six Channel Hd Audio Codec
• Manufacturer: Integrated Device Technology

92HD89C
Six channel HD Audio codec optimized for low power
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
IDT™ CONFIDENTIAL
2.1.1.
Port Characteristics
Universal (Bi-directional) jacks are supported on ports A, B, C, D, E, F and G for all family members.
Ports A and D are designed to drive 32 ohm (nominal) headphones or a 10K (nominal) load. Line
Level outputs are intended to drive an external 10K load (nominal) and an on board shunt resistor of
20-47K (nominal). However, applications may support load impedances of 2.8K ohms and above
when implementing ports capable of operating as microphone inputs or line outputs. Input ports are
75K (nominal) at the pin.
DAC full scale outputs and intended full scale input levels are greater than 1V rms at 5V (+5%/
-10%) to meet WLP requirements. Line output ports and Headphone output ports on the Yangtze
Series codec may be configured for +3dBV full scale output levels by using a vendor specific verb.
Output ports are always on to prevent pops/clicks associated with charging and discharging output
coupling capacitors. This maintains proper bias on output coupling caps even in power state D3 as
long as AVDD is available. Unused ports should be left unconnected.
AFG Power State
D0-D2
D3
D3cold
D0-D2
D4
D5
Input Enable
1
1
0
0
1
1
-
-
-
-
-
Table 3. Analog Output Port Behavior
Output Enable
14
1
0
1
0
0
1
1
0
-
-
-
Port Behavior
Not allowed. Port is active as input.
Active - Port enabled as input
Active - Port enabled as output
Inactive -port is powered on (low output impedance)
but drives silence only.
Not allowed. Port is active as input.
Inactive - Port enabled as input but powered down
Active - Port enabled as output
Inactive -port is powered on (low output impedance)
but drives silence only.
Not allowed. Port is active as input.
Inactive (lower power) - Port keeps output coupling
caps charged.
Low power state. If enabled, Beep will output from
the port
V 0.91 08/09
92HD89C