92hd89d Integrated Device Technology, 92hd89d Datasheet - Page 15
92hd89d
Manufacturer Part Number
92hd89d
Description
Eight Channel Hd Audio Codec Low Power Optimized For Ecr15b And Eup
Manufacturer
Integrated Device Technology
Datasheet
1.92HD89D.pdf
(365 pages)
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92HD89D
Eight channel HD Audio codec optimized for low power
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
2.1.1.
Port Characteristics
Universal (Bi-directional) jacks are supported on ports A, B, C, D, E, F, G and H for all family mem-
bers. Ports A, B, 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 resis-
tor 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. When updating existing
designs, ensure that there are no conflicts between the output ports on the codec and existing cir-
cuitry.
AFG Power State
D0-D1
D2
D3
D3cold
D4
D5
Input Enable
1
1
0
0
1
1
0
0
1
1
0
0
-
-
-
Table 3. Analog Output Port Behavior
Output Enable
15
1
0
1
0
1
0
1
0
1
0
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
Inactive (lower power) - Port keeps output coupling
caps charged.
Inactive (lower power) - Port keeps output coupling
caps charged.
Inactive (lower power) - Port keeps output coupling
caps charged.
Off - Charge on coupling caps will not be maintained.
V1.0 04/10
92HD89D
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