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MSM7582 Datasheet(PDF) 18 Page - OKI electronic componets

Part # MSM7582
Description  pie/4 Shift QPSK MODEM
PDF  24 Pages
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Manufacturer  OKI [OKI electronic componets]
Direct Link  http://www.oki.com
Logo OKI - OKI electronic componets

MSM7582 Datasheet(HTML) 18 Page - OKI electronic componets

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¡ Semiconductor
MSM7582/7582B
18/24
(2) CR1 (I, Q gain adjustment)
B7
B6
B5
B4
B3
B2
B1
B0
Ich
GAIN3
Ich
GAIN2
Ich
GAIN1
Ich
GAIN0
Qch
GAIN3
Qch
GAIN2
Qch
GAIN1
Qch
GAIN0
00000000
Initial value
CR1
B7 to B4: I+/I– output gain setting, in 3 mV steps (Refer to Table-3.)
B3 to B0: Q+/Q– output gain setting, in 3 mV steps (Refer to Table-3.)
(3) CR2 (ENV gain adjustment)
B7
B6
B5
B4
B3
B2
B1
B0
ENV
GAIN3
ENV
GAIN2
ENV
GAIN1
ENV
GAIN0
————
00000000
Initial value
CR2
B7 to B4: ENV output gain adjustment (Refer to Table-3.)
B3 to B0: Not used
Table-3 I, Q, and ENV Output Gain Values
CR1-B7
-B6 -B5 -B4
CR1-B3
-B2 -B1 -B0
CR2-B7
-B6 -B5 -B4
0
111
0
110
0
101
0
100
0
011
0
010
0
001
0
000
1
111
1
110
1
101
1
100
1
011
1
010
1
001
1
000
Amplitude
1.042
1.036
1.030
1.024
1.018
1.012
1.006
1.000
0.994
0.988
0.982
0.976
0.970
0.964
0.958
0.952
¥ Reference value
(Reference value)
Description



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