YMF743 Datasheet, PDF (3/24 Pages) YAMAHA CORPORATION – AC’97 Revsion2.1 Audio CODEC with Digital Audio I/F

YMF743
PIN DESCRIPTION
No.
Name
I/O
Function
Digital power supply (+3.3V / +5.0)
1
DVdd1
- Connect to the digital ground with 0.1mF and 47mF capacitors.
Connect this pin to DVdd2.
2
XTL_IN
I 24.576MHz Clock Input
3
XTL_OUT
O 24.576MHz Clock Output
4
DVss1
- Digital ground. Connect this pin to DVss2.
5
SDATA_OUT
I AC’97 Serial Input Stream
AC’97 Bit Clock
6
BIT_CLK
I/O As an output pin at the primary codec where CODEC ID=00.
As an input pin at the secondary codec where CODEC ID=01,10,11.
7
DVss2
- Digital ground. Connect this pin to DVss1.
8
SDATA_IN
O AC’97 Serial Output Stream
Digital power supply (+3.3V / +5.0)
9
DVdd2
- Connect to the digital ground with 0.1mF and 47mF capacitors.
Connect this pin to DVdd1.
10
SYNC
I SYNC Input (Fixed at 48kHz)
11
RESET#
I Hardware Reset
12
PC_BEEP
AI PC Speaker Beep
13
PHONE
AI Telephony Input
14
AUX_L
AI AUX Input Left Channel
15
AUX_R
AI AUX Input Right Channel
16
VIDEO_L
AI Video Audio Input Left Channel
17
VIDEO_R
AI Video Audio Input Right Channel
18
CD_L
AI CD Audio Input Left Channel
CD Audio Analog Ground
19
CD_GND
AI
Connect this pin to CD Ground or Analog Ground.
20
CD_R
AI CD Audio Input Right Channel
21
MIC1
AI Microphone Input 1
22
MIC2
AI Microphone Input 2
23
LINE_IN_L
AI Line Input Left Channel
24
LINE_IN_R
AI Line Input Right Channel
Analog Power Supply (+5.0V)
25
AVdd1
- Connect to the analog ground with 0.1mF and 47mF capacitors.
Connect this pin to AVdd2.
26
AVss1
- Analog ground. Connect this pin to AVss2.
Analog Reference Voltage
27
Vref
AO
Connect to the analog ground with 0.1mF and 22mF capacitors.
Analog Reference Voltage Output
28
Vrefout
AO Connect to the analog ground with 0.1mF and 22mF capacitors when
it is used to the external circuit.
3
December 18, 2000