92hd73e Integrated Device Technology, 92hd73e Datasheet - Page 21

• Manufacturer Part Number: 92hd73e
• Description: Ten Channel Hd Audio Codec Premium Wlp 3/4 Compliant
• Manufacturer: Integrated Device Technology

TEN CHANNEL HD AUDIO CODEC, PREMIUM WLP 3/4 COMPLIANT
92HD73E
TEN CHANNEL HD AUDIO CODEC, PREMIUM WLP 3/4 COMPLIANT
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 9: Multi-Converter Stream Critical Entries.
SmplRateDiv
BitsPerSmpl
NmbrChan
Strm
Ch
Sub Field Name
21
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.
…
92HD73E
Description
PC AUDIO
V 1.0 03/08