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Philips Semiconductors
Audio processor - filter and control section
Product specification
NE/SA5751
DEMOD DATA
TXEN
DATA BLOCK
RXCLOCK
RXDATA
TXCLOCK
TXDATA
DATA PROCESSOR
5V
7.5V
5.0/0V
7.5/0V
POWER SUPPLY
DATA
DEMOD
RF BLOCK
MOD
AUDIO BLOCK
VOX
EAR
I2C
MIC SPEAKER
LOGIC UNIT
8
CONTROL UNIT
Figure 4. Cellular Radio System
DEMOD DATA
TXEN
DATA PROCESSOR
POWER SUPPLY ENABLE
SR00653
5V
7.5V
5.0/0V
7.5/0V
POWER SUPPLY
DEMOD
DATA
RF BLOCK
MOD
NE5750
NE5751
LOGIC UNIT
VOX
I2C
RSSI
EAR
MIC
SPEAKER
8
CONTROL UNIT
Figure 5. APROC Application Diagram
POWER SUPPLY ENABLE
SR00654
1990 Aug 17
1058