
YMF753
March 6, 2001
3
PIN DESCRIPTION
No.
Name
I/O
Function
1
DVdd1
-
Digital power supply (Typ. +3.3V / +5.0V)
Connect to the digital ground with 0.1
mF 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
6
BIT_CLK
I/O
AC’97 Bit Clock
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
9
DVdd2
-
Digital power supply (Typ. +3.3V / +5.0V)
Connect to the digital ground with 0.1
mF 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
19
CD_GND
AI
CD Audio Analog Ground
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
25
AVdd1
-
Analog Power Supply (Typ. +4.3V to +5.0V)
Connect to the analog ground with 0.1
mF and 47mF capacitors.
Connect this pin to AVdd2.
26
AVss1
-
Analog ground. Connect this pin to AVss2.
27
Vref
AO
Analog Reference Voltage
Connect to the analog ground with 0.1
mF and 22mF capacitors.
28
Vrefout
AO
Analog Reference Voltage Output
Connect to the analog ground with 0.1
mF and 22mF capacitors when
it is used to the external circuit.