توضیحات
CH375B يک ايسي براي پروتکول USB که هر دو مد USB-Host و USB Device/Slave را پشتيباني ميکند. از ويژگي هاي اين ايسي ميتوان به ارتباط HOST از نوع FULL Speed , و LOW Speed با سرعت12Mbps ، 1.5Mbps روي USB Version2، احتياج به قطعات خارجي تنها کريستال و خازن ، تشخيص اتوماتيک اتصال و قطع اتصال USB و ارسال پيام به USB Host و ... اشاره کرد.
Description
CH375B is a USB bus universal interface chip, supports USB-HOST Mode and USB-DEVICE/SLAVE
Mode. There are 8-bit data bus and read, write, chip select control wire and interrupt output in CH375.It is
convenient to link CH375 to control system bus of MCU/DSP/MPU.CH375 also provides serial
communication in USB-HOST mode. It connects with DSP/MCU/MPU through serial input, output and
interrupt output.
The USB device mode of CH375 is compatible with CH372, and CH375 incorporates all functions of
CH372. For USB-DEVICE/SLAVE mode operation and specification, please refer to the CH372
specification. This data sheet only covers USB-HOST mode operation.
2. Features
* Full-speed USB-HOST interface, conforms to USB Specification Version 2.0, only needs crystal and
capacitance external.
* Full-speed USB device interface, compatible with CH372, supports exchanging USB-HOST mode and
USB-DEVICE/SLAVE mode dynamically.
* Input and output buffers of host endpoint occupy 64-byte respectively, supports common full-speed USB
device with 12Mbps and low-speed device with 1.5Mbps.
* Supports USB device control transfer, bulk transfer and interrupt transfer.
* Detects USB device plug and unplug automatically and sends message to USB host.
* Configures protocol processor control transfer inside to simplify usual control transfer.
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