AN18207A
Technical Data (continued)
y I2C-bus interface (continued)
6. Sub address byte and data byte format (Write mode)
Tuner-control (Group 1)
SUB-ADD 00H (Write)
Bit
Name
Function
LSB : D0
D1
D2
D3
D4
DSS0
DSS1
DSS2
DSS3
DSS4
FM and AM-SD tuned level adjust
Be sure to set it when you change FM / AM.
High : Sensitivity low
Low : Sensitivity high
This sensitivity is affected by an external RF amp. gain.
Ex.)
FM : X'5'
AM : X'C'
It is recommended to set "0" for DSS4.
D5
—
Don't care (0/1)
D6
—
PLL-charge pump current select
MSB : D7
120 μA → Fast lock up time
30 μA → S/N improvement
ICO
ICO
0
1
Normal : 120 μA
Icp [μA]
120
30
SDC00078AEB
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