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file name	file content
CH374DS1.PDF	CH374 datasheet. CH374 is a USB-HOST&DEVICE general interface chip. It supports USB host and USB device, supports 12M USB full-speed communication and 1.5M low-speed communication, supports 8-bit parallel interface or SPI interface, supports all types of USB transmission and Hub operation, etc.
CH390DS1.PDF	CH390 Datasheet, CH390 is an industrial-grade Ethernet controller chip with its own 10/100M Ethernet Media Access Controller (MAC) and Physical Layer (PHY), supporting CAT3, 4, 5 for 10BASE-T and CAT5, 6 for 100BASE-TX connections, supporting HP Auto-MDIX, low-power consumption design, and complying with IEEE 802.3u specification. CH390 has built-in 16K bytes SRAM, supports 3.3V or 2.5V parallel interface and SPI serial interface for compatibility with various MCUs, MPUs, DSPs and other controllers.
CH182DS1.PDF	CH182 datasheet, CH182 is an industrial grade 10/100M Ethernet PHY transceiver with Auto-MDIX support. CH182 internally includes Physical Coding Sublayer (PCS), Physical Media Access Layer (PMA), Twisted Pair Physical Medium Dependent (TP-PMD), 10BASE-TX encoder/decoder, Twisted Pair Media Attachment Unit (TPMAU), MII and RMII interfaces, and other modules required for Ethernet Transceiver functions.
CH392DS1.PDF	CH392 datasheet. TCP/IP protocol stack chip, integrated 10M MAC and PHY transceiver, supports SPI/asynchronous serial port, built-in DHCP, ARP, UDP and TCP protocol firmware, supports MCU system to connect to Ethernet.
CH9120DS1.PDF	CH9120 datasheet. CH9120 realizes bidirectional transparent transmission between UART and Ethernet, supports UART and network configuration. CH9120 has built-in 10M PHY, and supports serial device to connect to Ethernet.
CH9121DS1.PDF	CH9121 datasheet. Realize transparent transmission between UART and Ethernet. It supports UART and network configuration. It has built-in PHY, and supports serial device to connect to the network.