92HD73C 데이터 시트보기 (PDF) - Integrated Device Technology
부품명
상세내역
일치하는 목록
92HD73C Datasheet PDF : 252 Pages
| |||
92HD73C
SIX CHANNEL HD AUDIO CODEC, PREMIUM WLP 3/4 COMPLIANT
PC AUDIO
1.4. Detailed Description
1.4.1.
Port Functionality
Multi-function (Input / output) ports allow for the highest possible flexibility. 8 bi-directional ports (3
headphone capable) support a wide variety of consumer desktop and mobile system use models.
Pins
Port
Input Output Headphone
39/41
A
Yes
Yes
Yes
21/22
B
Yes
Yes
Yes
23/24
C
Yes
Yes
35/36
D
Yes
Yes
Yes
14/15
E
Yes
Yes
16/17
F
Yes
Yes
43/44
G
Yes
Yes
45/46
H
Yes
Yes
18/19/20 CD (Port I)
Yes
48
SPDIF_OUT0
Yes
40
SPDIF_OUT1
Yes
47
SPDIF_IN
Yes
4 (CLK=2)
DMIC0
Yes
30 (CLK=2)
DMIC1
Yes
Mic Bias
(Vref pin)
Yes
Yes
Yes
Yes
Input
boost amp1
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
CD
(pseudo differential)
Yes
Yes
Yes
Table 1. Port Functionality
Note1: 40dB boost requires using the IDT driver. When the 40dB mic boost feature is enabled, addi-
tional gain increases greater than 6dB may 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.
1.4.2.
Port Characteristics
Universal (Bi-directional) jacks are supported on all ports except the CD input. Ports A, B, and D are
designed to drive a set of 32 ohm (nominal) headphones or a 10K (nominal) load with on board
shunt resistance as low as 20K ohms (typical - used to maintain coupling CAP bias.) Line Level out-
puts are intended to drive an external 10K speaker load (nominal) and an on board shunt resistor of
20K-47K (nominal). However, applications may support load impedances of 5K ohms and above.
Input ports are 47K (nominal) at the pin.
DAC full scale output and intended full scale input levels are 1V rms. Line output ports and Head-
phone output ports on 92HD73C 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 D3 as long as AVDD
is available. Unused ports should be left unconnected. When updating existing designs to use the
92HD73C, ensure that there are no conflicts between the output ports on 92HD73C and existing cir-
cuitry.
13
SIX CHANNEL HD AUDIO CODEC, PREMIUM WLP 3/4 COMPLIANT
92HD73C
V 1.3 08/11
Share Link: 