92hdw74c Integrated Device Technology, 92hdw74c Datasheet - Page 16

• Manufacturer Part Number: 92hdw74c
• Description: 6-channel Hd Audio Codec, Single Or Dual Spdif
• Manufacturer: Integrated Device Technology

SIX CHANNEL HD AUDIO CODEC, PREMIUM WLP 3/4 COMPLIANT
D0
D1-D2
D3
AFG Power
92HDW74C1
SIX CHANNEL HD AUDIO CODEC, PREMIUM WLP 3/4 COMPLIANT
State
1.4.5.
1.4.6.
De-Asserted (High)
De-Asserted (High)
De-Asserted (High)
De-Asserted (High)
De-Asserted (High)
De-Asserted (High)
De-Asserted (High)
RESET#
SPDIF Input
SPDIF IN can operate at 44.1 KHz, 48 KHz, 88.2 KHz or 96 KHz, and implements internal Jack
Sensing.
A sophisticated digital PLL allows automatic rate detection and accurate data recovery. The ability to
directly accept consumer SPDIF voltage levels eliminates the need for costly external receiver ICs.
Advanced features such as record-slot-select and SPDIF_IN routing to the DAC allow for simulta-
neous record and play.
Analog Mixer
An analog mixer is available on the 92HDW74C1. The mixer supports independent gain (-34.5 to
+12dB in 1.5dB steps) on each input as well as independent mutes on each input. A master volume
follows mixing and provides gain from -46.5dB to 0dB in 1.5dB steps.
The following inputs are available:
•
•
•
•
•
•
CD
Analog PC_Beep
Inport0_Mux
Inport1_Mux
Inport2_Mux
Inport3_mux
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
GPIO 3
Enable
Table 5. SPDIF OUT 1 (Pin 40) Behavior
Disabled
Disabled
Enabled
Enabled
Enabled
Enabled
Output
Enable
-
16
Dig Enable
Converter
Disabled
Enabled
Enabled
-
-
-
-
Stream ID
1-15
0
-
-
-
-
-
92HDW74C1
Active - Pin drives SPDIF-format,
Hi-Z (internal pull-down enabled)
data (internal pull-down enabled)
Hi-Z (internal pull-down enabled)
Hi-Z (internal pull-down enabled)
Active - Pin drives SPDIFOut1
Active - Pin drives 0 (internal
Active - Pin drives 0 (internal
but data is zeroes (internal
pull-down enabled)
pull-down enabled)
pull-down NA)
Pin Behavior
PC AUDIO
V 1.0 03/08