msm7512b Oki Semiconductor, msm7512b Datasheet - Page 8
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msm7512b
Manufacturer Part Number
msm7512b
Description
1200 Bps Half Duplex Fsk Modem ? Itu-t V.2
Manufacturer
Oki Semiconductor
Datasheet
1.MSM7512B.pdf
(12 pages)
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OPERATION MODE
Phone
Line
Phone
Line
Phone
Line
MOD2
Semiconductor
0
0
1
1
AO
AO
AO
AI
AI
AI
SG
SG
MOD1
0
1
0
1
Figure 4 Analog Loop Back Test Mode
Transmit Filter
Transmit Filter
Transmit Filter
Receive Filter
Receive Filter
Receive Filter
Figure 2 FSK Transmit Mode
Figure 3 FSK Receive Mode
Table 1 Operation Mode
FSK Transmit Mode (Fig.2)
FSK Receive & 75 bps Transmit Mode (Fig.3)
Analog Loop Back Test Mode (Fig. 4)
Power Down Mode
Demodulator
Demodulator
Demodulator
Modulator
Modulator
Modulator
Mode
V
DD
MSM7512B
XD
XD
XD
RD
RD
RD
8/12
DTE
DTE
DTE