LC8955 Ver la hoja de datos (PDF) - SANYO -> Panasonic
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LC8955 Datasheet PDF : 4 Pages
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LC8955
Decoder Block
The decoder block converts the ADPCM data into 16-bit linear PCM data. Decoding parameters can either be set by the
CPU, or read from subheader information in the ADPCM data stream.
DAC Interface Block
Two output formats are available. The first is suitable for input to SANYO’s LC7833, 7833M DA converters, and the
second is the standard CD-I format. The output circuit will also accept CD-DA format input data and, by setting an
LC8955 internal register, switch it through to the output pins without processing.
Specifications
Absolute Maximum Ratings at VSS = 0V
Parameter
Symbol
Conditions
Maximum supply voltage
Input/output voltage
Allowable power dissipation
VDD max
VI, VO
Pd max
Ta=25°C
Ta=25°C
Ta≤70°C
Operating temperature
Topr
Storage temperature
Tstg
Solder temperature
10s., dipping of pins only
Ratings
Unit
– 0.3 to +7.0 V
– 0.3 to VDD +0.3 V
350 mW
– 30 to +70 ˚C
– 55 to +125 ˚C
260 ˚C
Allowable Operating Conditions at Ta = –30 to +70˚C, VSS = 0V
Parameter
Symbol
Conditions
Supply voltage
Input voltage range
VDD
VIN
Ratings
Unit
min
typ
max
4.5
5.0
5.5 V
0
VDD V
DC Characteristics at Ta = –30 to +70˚C, VSS = 0V, VDD = 4.5 to 5.5V
Parameter
Symbol
Conditions
Input high-level voltage
Input low-level voltage
Input high-level voltage
Input low-level voltage
Output high-level voltage
Output low-level voltage
Input leakage current
Pull-up resistor
VIH1
VIL1
VIH2
VIL2
VOH
VOL
IL
RUP
All input pins except RESETB, EOPB, IO7 to 0,
SD7 to 0
RESETB, EOPB, IO7 to 0, SD7 to 0
All output pins: IOH=– 3mA
All output pins: IOL=3mA
All input pins: VI=VSS, VDD
IO0 to 7, SD0 to 7
Ratings
Unit
min
typ
max
2.2
V
0.8 V
2.5
V
0.6 V
2.4
V
0.4 V
– 25
+25 µA
10
20
40 kΩ
No.3215–2/4
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