LC87F1JJ8B Datasheet, PDF (26/28 Pages) Sanyo Semicon Device – 8-bit 1-chip Microcontroller with USB-host controller

LC87F1JJ8B
P34/UFILT
Rd
0kΩ
+
Cd
- _2.2μF
When using the internal PLL circuit to generate the
48MHz clock for USB, it is necessary to connect a filter
circuit to the P34/UFILT pin such as that shown in the left
figure.
Figure 5 External Filter Circuit for the Internal USB-dedicated PLL Circuit
P33/AFILT
+ ^Cp
1μF
-
Rd
150Ω
+ _Cd
- ^4.7μF
To generate the master clock for the audio
interface using the internal PLL circuit, it is
necessary to connect a filter circuit to the
P33/AFILT pin that is shown in the left figure.
Figure 6 External Filter Circuit for Audio Interface (Used with Internal PLL Circuit)
UHD+
5pF
UHD-
5pF
33Ω
15kΩ It is necessary to adjust the Circuit Constant of the
USB Port Peripheral Circuit for each mounting board.
33Ω
15kΩ
Figure 7 USB Port Peripheral Circuit
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