IDTSTAC9750XXTAEC1XR IDT, Integrated Device Technology Inc, IDTSTAC9750XXTAEC1XR Datasheet - Page 16

• Manufacturer Part Number: IDTSTAC9750XXTAEC1XR
• Description: IC CODEC AC'97 2CH VALUE 48-LQFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Audio Codec '97r

Specifications of IDTSTAC9750XXTAEC1XR

• Resolution (bits): 18 b, 20 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• S/n Ratio, Adcs / Dacs (db) Typ: 85 / 89
• Voltage - Supply, Analog: 3.14 V ~ 3.47 V; 4.75 V ~ 5.25 V
• Voltage - Supply, Digital: 3.14 V ~ 3.47 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: STAC9750XXTAEC1XR

IDT™
VALUE-LINE TWO-CHANNEL AC’97 CODECS
STAC9750/9751
VALUE-LINE TWO-CHANNEL AC’97 CODECS
2.2.3.
BIT_CLK frequency
BIT_CLK period
BIT_CLK output jitter
BLT_CLK high pulse width (Note 1)
BIT_CLK low pulse width (Note 1)
SYNC frequency
SYNC period
SYNC high pulse width
SYNC low pulse width
Note:
BIT_CLK
short to ground
short to ground
short to ground
short to ground
XTAL or open
XTAL or open
XTAL or open
SYNC
Pin Config
XTL_OUT
Clocks
The STAC9750/9751 supports several clock frequency inputs as described in the following table. In
general, when a 24.576 MHz clock XTAL is not used, the XTAL_OUT pin should be tied to ground.
This short to ground configures the part into an alternate clock mode and enables an on board PLL.
XTAL
1.
Worst case duty cycle restricted to 45/55.
Pin Config
Parameter
pulldown
pulldown
pulldown
pulldown
CID1
float
float
float
float
Tsync_high
Tclk_high
Figure 4. Clocks Timing
Table 5. Clock Mode Configuration
Table 4. Clocks Specifications
Pin Config
pulldown
pulldown
pulldown
pulldown
Tclk_period
CID0
float
float
float
float
16
Tclk_period
Tclk_low
12.288 MHz BIT_CLK
12.288 MHz BIT_CLK
12.288 MHz BIT_CLK
14.31818 MHz source
Clock Source Input
Tsync_period
24.576 MHz source
24.576 MHz XTAL
Tclk_period
Tsync_high
Tsync_low
Tclk_high
27 MHz source
48 MHz source
Tclk_low
Symbol
Tsync_low
STAC9750/9751
Min
36
36
-
-
-
-
-
-
-
12.288
81.4
40.7
40.7
48.0
20.8
19.5
Typ
750
1.3
CODEC
Mode
P
S
S
S
P
P
P
P
Max
45
45
-
-
-
-
-
-
-
PC AUDIO
V 5.8 103106
CODEC
Units
MHz
ID
KHz
0
1
2
3
0
0
0
0
ns
ps
ns
ns
µs
µs
µs