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STA014 数据表(PDF) 7 Page - STMicroelectronics

部件名 STA014
功能描述  MPEG 2.5 LAYER III AUDIO DECODER WITH ADPCM AND SRS WOWO POSTPROCESSING CAPABILITY
PDF  45 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STA014 数据表(HTML) 7 Page - STMicroelectronics

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background image
VDD
100nF
1
2
VDD
100nF
14
13
VSS
VDD
100nF
16
15
VDD
100nF
23
22
VSS
VSS
VSS
17
18
28
26
RESET
24
TESTEN
OUT_CLK/DATA_REQ
VDD
PVSS
PVDD
100nF
4.7
µF
4.7
µF
PVDD
PVSS
VSS
10K
1K
4.7nF
PVSS
470pF
19
20
21
8
7
6
5
12
11
10
9
4
3
XTO
XTI
SCR_INT
27
LRCK_ADC
BIT_EN
25
SDI_ADC
SCKR
SDI
OCLK
LRCKT
SCKT
SDO
SCL
SDA
D00AU1143
Figure 3. Test Circuit (refer to SO28 package)
IOL
IOH
CL
VREF
VDD
OUTPUT
D98AU967
Figure 4. Test Load Circuit
Output
IOL
IOH
CL
VREF
SDA
1mA
100pF
3.6V
Other Outputs
100
µA100µA
100pF
1.5V
Test Load
2. FUNCTIONAL DESCRIPTION
2.1 - Clock Signal
The STA014 input clock is derivated from an ex-
ternal source or from a industry standard crystal
oscillator, generating input frequencies of 10,
14.31818 or 14.7456 MHz.
Other frequencies may be supported upon re-
quest to STMicroelectronics. Each frequency is
supported by downloading a specific configura-
tion file, provided by STM
XTI is an input Pad with specific levels.
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VIL
Low Level Input Voltage
VDD-1.8
V
VIH
High Level Input Voltage
VDD-0.8
V
CMOS compatibility
The XTI pad low and high levels are CMOS compatible; XTI pad noise margin is better than typical
CMOS pads.
TTL compatibility
The XTI pad low level is compatible with TTL while the high level is not compatible (for example if VDD =
3V TTL min high level = 2.0V while XTI min high level = 2.2V)
STA014-STA014B-STA014T
7/45



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