IDT92HDW74C25PRGXC1X8 IDT, Integrated Device Technology Inc, IDT92HDW74C25PRGXC1X8 Datasheet - Page 20

• Manufacturer Part Number: IDT92HDW74C25PRGXC1X8
• Description: IC AUDIO CODEC HD 6CH 48-TQFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Audio Codec, HDr

Specifications of IDT92HDW74C25PRGXC1X8

• Resolution (bits): 24 b
• Number Of Adcs / Dacs: 2 / 3
• Sigma Delta: No
• S/n Ratio, Adcs / Dacs (db) Typ: 86 / 90
• Dynamic Range, Adcs / Dacs (db) Typ: 86 / 90
• Voltage - Supply, Analog: 3.14 V ~ 3.47 V; 3.8 V ~ 4.2 V; 4.28 V ~ 4.73 V; 4.75 V ~ 5.25 V
• Voltage - Supply, Digital: 3.14 V ~ 3.47 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP, 48-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 92HDW74C25PRGXC1X8

SIX CHANNEL HD AUDIO CODEC
92HDW74C2
SIX CHANNEL HD AUDIO CODEC
ADC[1:0] CnvtrID
1.4.12. EAPD
The EAPD pin (pin 47) also supports SPDIF_In and GPIO functions. The pin defaults to EAPD after
power on reset and will remain in EAPD mode until either GPIO is enabled for pin 47 or the port I/O
is enabled to support SPDIF. Although named External Amplifier Power Down (EAPD) by the HD
Audio specification, this pin operates as an external amplifier power up signal. The EAPD value is
reflected on the EAPD pin; a 1 causes the external amplifier to power up, and a 0 causes it to power
down. When the EAPD value = 1, the EAPD pin must be placed in a state appropriate to the current
power state of the associated Pin Widget even though the EAPD value may remain 1. The default
state of this pin is 0 (driving low) and a Pull-down prevents the line from floating high when the part is
in reset.
[10:8]
[6:4]
[3:0]
[7:4]
[3:0]
Bit Number
Table 8: Multi-Converter Stream Critical Entries.
SmplRateDiv
BitsPerSmpl
NmbrChan
Strm
Ch
Sub Field Name
20
Sample Base Rate Divisor
000= Divide by 1
001= Divide by 2 (not supported)
010= Divide by 3 (not supported)
011= Divide by 4 (not supported)
100= Divide by 5 (not supported)
101= Divide by 6 (not supported)
110= Divide by 7 (not supported)
111= Divide by 8 (not supported)
Bits per Sample
000= 8 bits (not supported)
001= 16 bits
010= 20 bits
011= 24 bits
100-111= Reserved
Number of Channels
Number of channels for this stream in each “sample
block” of the “packets” in each “frame” on the link.
0000=1 channel (not supported)
0001 = 2 channels
1111= 16 channels.
Software-programmable integer representing link
stream ID used by the converter widget. By
convention stream 0 is reserved as unused.
Integer representing lowest channel used by
converter.
0 and 2 are valid Entries
If assigned to the same stream, one ADC must be
assigned a value of 0 and the other ADC assigned a
value of 2.
…
92HDW74C2
Description
PC AUDIO
V 1.0 03/08