EPSON的S1R72V17：
高速主从，自己再用，也想介绍给大家，有问题可以联系我，QQ：4043752
以下是功能：
USB2.0 host functions
Supports HS (480 Mbps), FS (12 Mbps), and LS (1.5 Mbps) transfers.
Includes pull-down resistors for downstream ports (external circuit unnecessary).
Includes HS termination (external circuit unnecessary).
Supports control, bulk, and interrupt transfers.
Channel structure
One (1) channel used exclusively for Control transfer
Includes five general-purpose (Bulk, and Interrupt transfer) channels.
USB power switch interface.
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