Audio Codec '97
AC ‘97 Component Specification Revision 2.3 Rev 1.0
13
2. Package, Pinout, and Signal Descriptions
The 7mm x 7mm 48-pin QFP package originally selected for AC ‘97 audio-only Codecs has become prevalent
throughout the industry. Vendors are recommended to follow the 48-pin package pinout assignments as closely as
possible. Modem Codec (MC) and Combo Audio/Modem Codec (AMC) packaging and pinouts are entirely vendor
specific.
2.1 48-pin QFP package
Figure 3 shows the pinout for the 48-pin QFP package. Figure 4 shows the package mechanicals.
Audio Codec '97
48 Pin package
Top View
23 546789101211
13
14
15
21
23
20
24
22
25
19
18
17
16
2627282930313233343536
37
38
39
40
41
42
43
44
45
46
47
48
AVss1
AVdd1
Vref
Vrefout
PHONE
CD_L
CD_C
CD_R
VIDEO_L
VIDEO_R
MIC1
SPDIF_OUT
EAPD
CAP6/GPIO1
CAP5/GPIO0
LINE_OUT_R
LINE_OUT_L
MONO_OUT
AUX_OUT_L
ID0#
ID1#
CAP2
AFILT1
AFILT2
AFILT3 / CAP1
MIC2
CAP3
CAP4
AVdd2
AVss2
AUX_IN_R
AUX_IN_L
LINE_IN_R
AUX_OUT_R
LINE_IN_L
XTL_IN
XTL_OUT
BIT_CLK
DVss2
DVdd2
SYNC
PC_BEEP
SDATA_OUT
DVss1
RESET#
DVdd1
SDATA_IN
AUX_OUT_C
Figure 3. AC ‘97 48-pin package and pinout