Epson S1R72V27, Руководство пользователя

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3. USB Interface Peripheral Circuit
S1R72V27 Evaluation Board Manual EPSON 3
(Rev. 1.0)
3. USB Interface Peripheral Circuit
This board incorporates the following two USB connectors.
•
CN5 (USB Mini B): For device functions
•
CN6 (USB Standard A): For host functions
DP/DM pins for these connectors are also connected to the DP/DM pins on this IC to facilitate evaluations,
but these circuits are not recommended. This is because mounting components or using wiring patterns like
this may affect impedance matching and reduces signal quality, resulting in communication problems. For
more information, refer to the
“ S1R72V Series USB 2.0 Hi-Speed PCB Design Guidelines ” .
Jumpers are provided on the USB interface peripheral circuit for this reason, and the jumpers should be set
appropriately to suit the evaluation requirements.
Case A: When using CN5 for the device and CN6 for the host
Case B: When using CN5 for both the device and host
Note: CN5 is a Mini B type and can be used only with devices in accordance with USB standards.
Case A Case B
JP15 OPEN Connect
JP16 Connect 1-2 Connect 1-3
JP18 Connect OPEN
R9, R10 Mount No Mount