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Datasheet: YMF753 (YAMAHA Corp.)

Ac97 Revision2.2 Audio Codec With Digital Audio I/f

 

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YAMAHA Corp.
YMF753
AC'97 Revision2.2 Audio CODEC
with Digital Audio I/F
YAMAHA CORPORATION
Decembe 3, 1998
YMF753 CATALOG
CATALOG No.:LSI-4MF753A2
March 6, 2001

OVERVIEW
YMF753 is an AC'97 Audio CODEC LSI, which is fully compliant with the industry standard "Audio
CODEC '97" component specification (Revision 2.2).
Different from former AC'97, YMF753 supports new features like SPDIF OUT and Zoomed Video Port.
Without using a digital controller, these new features can be enhanced in the AC'97 sound system that has an
ICH controller built-in chipset.
Low power consumption is supported not only in the normal mode but can be controlled in the power-down
mode.
FEATURES
AC'97 Revision 2.2 Compliant
Exceeds PC99 / PC2001 Analog Performance Requirement
(Mobile PC Audio Performance Compliant when analog low power supply is used.)
Analog Inputs :
- 4 Stereo Inputs: LINE, CD, VIDEO, AUX
- 2 Monaural Inputs: Speakerphone and PC BEEP Inputs
- 2 Independent Microphone Inputs
PC BEEP can directly output to Line Out
Internal +20dB amplifier circuitry for microphone
Analog Outputs : Stereo LINE Output, True LINE Level and Monaural Output
Supports Zoomed Video Port
Supports Consumer IEC958 Output Port (SPDIF OUT)
SPDIF Output for AC'97 Revision 1.0 Compliant
Different audio data from AC-Link can be output to SPDIF and Line Out
Supports 3D Enhancement (Wide Stereo), and Bass / Treble control
Multiple CODEC Capability
Programmable Power Down Mode
Supports EAPD (External Amplifier Power Down)
Power Supplies : Analog 4.3V to 5.0V, Digital 3.3V or 5.0V
48-Pin SQFP Package (YMF753-S)
YMF753
March 6, 2001
2
PIN CONFIGURATION





























48-Pin SQFP Top View
48
47
46
45
44
43
42
41
40
39
38
37
1
2
3
4
5
6
7
8
9
10
11
12
36
35
34
33
32
31
30
29
28
27
26
25
13
14
15
16
17
18
19
20
21
22
23
24
Z
V
_
BCK /
DIT
EAP
D
(DIT
)
EXT
24M /
ID1#
Re
se
r
v
e
d
/
ID0#
ZV
_S
I
N
/ R
e
s
e
rved
ZV
_
L
R
/ DIT
A
V
ss2
LNLV
L_O
U
T_R
MSEL
LNLV
L_O
U
T_L
AVdd2
M
O
NO
_O
UT
LINE_OUT_R
LINE_OUT_L
CAP6
CAP5
CAP4
CAP3
CAP2
CAP1
Vrefout
Vref
AVss1
AVdd1
DVdd1
XTL_IN
XTL_OUT
DVss1
SDATA_OUT
BIT_CLK
DVss2
SDATA_IN
DVdd2
SYNC
RESET#
PC_BEEP
PHO
N
E
AU
X_
L
AU
X_
R
VIDEO_
L
VIDEO_
R
CD_
L
CD_
G
N
D
CD_
R
MIC1
MIC2
LI
NE
_I
N_L
LI
NE
_I
N_R
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
m
F and 47
m
F 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
m
F and 47
m
F 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
m
F and 47
m
F 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
m
F and 22
m
F capacitors.
28
Vrefout AO
Analog Reference Voltage Output
Connect to the analog ground with 0.1
m
F and 22
m
F capacitors when
it is used to the external circuit.
YMF753
March 6, 2001
4
No.
Name I/O
Function
29
CAP1
A
Connect to the analog ground with a 2200pF capacitor.
30
CAP2
A
Connect to the analog ground with a 0.015
m
F capacitor.
31
CAP3
A
Connect to the analog ground with a 0.01
m
F capacitor.
32
CAP4
A
Connect to the analog ground with a 2200pF capacitor.
33
CAP5
A
Connect to the analog ground with a 0.015
m
F capacitor.
34
CAP6
A
Connect to the analog ground with a 0.01
m
F capacitor.
35
LINE_OUT_L
AO
Line Output Left Channel
36
LINE_OUT_R
AO
Line Output Right Channel
37 MONO_OUT
AO
Monaural
Output
38 AVdd2
-
Analog power supply (Typ. +4.3V to +5.0V)
Connect to the analog ground with 0.1
m
F and 47
m
F capacitors.
Connect this pin to AVdd1.
39
LNLVL_OUT_L
AO
True LINE Level Output Left Channel
40
MSEL
I
Mode Select, which changes the pin function of No.43 46, 48.
41
LNLVL_OUT_R
AO
True LINE Level Output Right Channel
42
AVss2
-
Analog ground. Connect to AVss1.
47 EAPD
(DIT)
O
The function is selected at 62h TX-7 bit.
TX-7="0", External Amplifier Power Down
TX-7="1", Digital Audio Interface Output (48kHz)
1. MSEL= "High" (Connect to analog power supply.)
No.
Name I/O
Function
43
ZV_LR
I-
Zoomed Video Port L/R clock
44
ZV_SIN
I-
Zoomed Video Port serial data
45
Reserved
-
Do not connect externally.
46
EXT24M
O
24.576MHz clock output
48
ZV_BCK
I-
Zoomed Video Port bit clock
2. MSEL= "Low" (Connect to analog ground.)
No.
Name I/O
Function
43
DIT
O
Digital Audio Interface Output (48kHz)
44
Reserved
-
Do not connect externally.
45
CODEC ID0#
I+
CODEC ID
46
CODEC ID1#
I+
CODEC ID
48
DIT
O
Digital Audio Interface Output (48kHz)
Note) AI: Analog Input Pin, AO: Analog Output Pin, I+: Input Pin with a Pull-up resistor,
I-: Input Pin with a Pull-down resistor
YMF753
March 6, 2001
5
BLOCK DIAGRAM



Master L
32step
0dB/
+20dB
AUX_L
AUX_R
VIDEO_L
VIDEO_R
CD_L
CD_GND
CD_R
LINE_IN_R
PHONE
MIC2
MIC1
A/D
A/D
AC'97
digital
I/F
RESET#
MU
X
PC_BEEP
LNLVL_OUT_R
LINE_OUT_L
MONO_OUT
VREF
T
i
m
i
ng G
e
ne
r
a
t
o
r
SYNC
BIT_CLK
SDATA_OUT
SDATA_IN
XTL_OUT
XTL_IN
Vr
ef
Vref
ou
t
CA
P
4
A
V
ss(
2
)
A
V
dd(2)
DVdd(2)
D
V
ss(
2
)
Left
Right
PC Beep
16step
MIC
32step
LINE
32step
CD
32step
VIDEO
32step
Monaural
32step
PHONE
32step
AUX
32step
PCM R
32step
PCM L
32step
Record R
16step
Record L
16step
Vol
u
m
e
Con
t
r
o
l
Power down
Con
t
r
o
l
3D
tone
LINE_OUT_R
LNLVL_OUT_L
Master R
32step
LINE_IN_L
CD Left
CD Right
BUF
ZV_BCK / DIT
Reserved / ID0#
EXT24M / ID1#
CA
P
3
CA
P
2
CA
P
1
CA
P
5
CA
P
6
POP
ZV
Port
MSEL
M
UX
ZV_SIN
/ Reserved
EAPD (DIT)
ZV_LR / DIT
EXT24M
ID0#
ID1#
DIT
DIT
ZV_LR
ZV_SIN
ZV_BCK
LPBK
MIX
RESET#
MS
UDS
TX-7
ZV R
32step
ZV L
32step
D/
A
D/
A
I
D
0/1#
SPSA
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