Valued AC97 Audio Codec
Description
Avance Logic,Inc.
ALC100
ALC100/ALC100P AC’97 Audio CODEC
Revision 1.
1 May 25, 2000
Avance Logic,Inc.
ALC100
1.
Features :
l Single chip audio CODEC with high S/N ratio.
l 16-bit ADC and DAC resolution.
l Compliant with AC’97 2.
1 specification l Supports AMR and CNR applications.
l 16-bit stereo full-duplex CODEC with fixed 48k sampling rate.
l 4 analog line-level stereo input with 5-bit volume control : LINE_IN,CD,VIDEO,AUX l 2 analog line-level mono input : PC_BEEP,PHONE_IN.
l Mono output with 5-bit volume control.
l Stereo output with 5-bit volume control.
l 2 MIC inputs : Software selectable.
l Power management.
l 3D Stereo Enhancement l True Line-Level output l Multiple CODEC extension.
l External Amplifier power down capability.
l Dual power support : Digital :5V/3.
3V Analog : 5V` l Standard 48-Pin LQFP Package
2.
Pin Description :
2.
1 Digital I/O pins : 11 pins
Name RESET#
Type Pin No
Description
I
11 AC'97 master H/W reset
XTL-IN
I
XTL-OUT
O
SYNC
I
BIT-CLK
IO
2
Crystal input pad (24.
576Mhz)
3
Crystal output pad
10 Sample Sync (48Khz)
6
Bit clock output (12.
288Mhz)
SDATA-OU
I
5
Serial TDM AC97 output
T
SDATA-IN
O
8
Serial TDM AC97 input
ID0#
I
45 ID strap 0
ID1#
I
46 ID strap 1
EAPD
O
47 External Amplifier power down
control
PWRI#
I
48 Internal register reset (For test)
2.
2 Analog I/O Pins : 18 pins
Name PC-BEEP PHONE
AUX-L AUX-R VIDEO-L VIDEO-R CD-L CD-GND CD-R MIC1 MIC2 LINE-L LINE-R LINE-OUTL LINE-OUTR LNLVL-L LNLVL-R MONO-OU
T
Type I I I I I I I I I I I I I O O O O O
Pin No 12 13 14 15 16 17 18 19 20 21 22 23 24 35 36 39 41 37
Description PC speaker input speakerphone input AUX Left channel AUX Right channel Video audio Left channel Video audio Right channel CD audio Left channel CD audio analog GND CD audio Right channel First Mic input Second Mic input Line input Left channel Line input Right channel Line-Out Left channel Line-Out Right channel True Line Level output-Left True Line Level output-Righ...
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