MSM7617 Evaluation Board
¡ Semiconductor
12
Component Descriptions (7/8)
Component Number
Component Name
Description
ch1 MODE
SW2
ch2 MODE
SW2
S3
S5
Switches for setting channel 1 control pins.
Switches for setting channel 2 control pins.
1
2
SG10
SG11
SG20
SG21
Switches for setting gain amplifier provided for SOUT. Control
takes 2 bits.
SGx1
SGx0
0
0
SOUT GAIN AMP OFF
0
1
SOUT GAIN AMP +6 dB
1
0
SOUT GAIN AMP +12 dB
1
1
SOUT GAIN AMP +18 dB
Operation
3
4
SA11
SA10
SA21
SA20
Switches for setting attenuator provided for SIN. Control takes
2 bits.
SAx1
SAx0
0
0
SIN ATT OFF
0
1
SIN ATT –6 dB
1
0
SIN ATT –12 dB
1
1
SIN ATT –18 dB
Operation
5
6
7
RGC11
RGC10
RGC21
RGC20
Switches for setting operating level and level regulation of the
GC provided for RIN. Control takes 2 bits.
Not used
8
Not used
RGCx1
RGCx0
0
0
GC : OFF
LR : OFF
0
1
GC : ON
Operating level :
≥
–20 dBm0
1
0
GC : ON
Operating level :
≥
–3 dBm0
1
1
LR : ON
RIN and SIN are attenuated –6 dB; ROUT
and SOUT are amp6 dB.
Operation
SW
Setting
8
7
6
5
4
OPEN
ch1 MODE SW2
3
2
1
OPEN
—
—
1/0
1/0
1/0
1/0
1/0
1/0
RGC10
RGC11
SA10
SA11
SG10
SG11
ON
OPEN = 1
ON = 0
8
7
6
5
4
OPEN
ch2 MODE SW2
3
2
1
OPEN
—
—
1/0
1/0
1/0
1/0
1/0
1/0
RGC20
RGC21
SA20
SA21
SG20
SG21
ON
OPEN = 1
ON = 0