msm7582b Oki Semiconductor, msm7582b Datasheet - Page 18

• Manufacturer Part Number: msm7582b
• Description: Pie/4 Shift Qpsk Modem
• Manufacturer: Oki Semiconductor

¡ Semiconductor
(2) CR1 (I, Q gain adjustment)
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 to B4: ENV output gain adjustment (Refer to Table-3.)
B3 to B0: Not used
CR1
Initial value
CR2
Initial value
CR1-B7
CR1-B3
CR2-B7
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
-B6 -B5 -B4
-B2 -B1 -B0
-B6 -B5 -B4
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
GAIN3
GAIN3
ENV
Ich
B7
B7
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
Table-3 I, Q, and ENV Output Gain Values
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
GAIN2
GAIN2
ENV
Ich
B6
B6
0
0
GAIN1
GAIN1
ENV
Ich
B5
B5
0
0
Amplitude
GAIN0
GAIN0
ENV
Ich
B4
B4
0
0
Description
GAIN3
Qch
B3
B3
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
—
0
0
¥ Reference value
(Reference value)
GAIN2
Qch
B2
B2
—
0
0
MSM7582/7582B
GAIN1
Qch
B1
B1
—
0
0
GAIN0
Qch
B0
B0
18/24
—
0
0