ml7020mb Oki Semiconductor, ml7020mb Datasheet - Page 2

• Manufacturer Part Number: ml7020mb
• Description: 1200 Bps Modem For Remote Control Systems
• Manufacturer: Oki Semiconductor

BLOCK DIAGRAM
1 Semiconductor
* CPT: Call progress tone
* The state shown of each switch is that when the register is set to “0”.
LO–
LO+
LI1–
LI1+
LI1O
SWI
SGO
SGC
LI2O
TO
LI2–
TI–
TI+
TIO
1.2 k
1.2 k
Input Amplifier 1
Input Amplifier 2
Input Amplifier 3
Output Amplifier 1
Output Amplifier 3
Output Amplifier 2
+1
–1
SW3
SG
Post-
LPF
SW1
SW2
SW4
SW5
MCU I/F
ATT
Reception
Detection
Reception
DTMF
Modem
CPT
Transmission
Transmission
Transmission
Modem
DTMF
Oscillator
CPT
Circuit
FEDL7020-02
X1
X2
CLKO
DETB
SP
XD
ML7020
RD
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