CH334U

WCH
CH334/CH335 Datasheet V2.2 http://wch.cn Overview CH334 and CH335 are USB2.0 protocol compliant 4-port USB HUB controller chips, supporting USB2.0 highspeed and full-speed for uplink ports, and USB2.0 high-speed 480Mbps, full-speed 12Mbps and low-speed 1.5Mbps for downlink ports, supporting not only low-cost STT mode (single TT schedules 4 downlink ports in time share), but also supports high ...
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Технические характеристики

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Корпус QSOP28
Примечания USB2.0 protocol compliant 4-port USB HUB controller chips
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CH334/CH335 Datasheet V2.2 http://wch.cn Overview CH334 and CH335 are USB2.0 protocol compliant 4-port USB HUB controller chips, supporting USB2.0 highspeed and full-speed for uplink ports, and USB2.0 high-speed 480Mbps, full-speed 12Mbps and low-speed 1.5Mbps for downlink ports, supporting not only low-cost STT mode (single TT schedules 4 downlink ports in time share), but also supports high performance MTT mode (4 TTs each corresponding to 1 port, concurrent processing). Industrial grade design with streamlined peripherals for use in computer and industrial control machine motherboards, peripherals, embedded systems, etc. Features - 4-port USB HUB, providing 4 USB 2.0 downlink ports, backward compatible with USB 1.1 protocol specification - Support each port independent power control or GANG overall linkage power control Support independent overcurrent detection of each port or overall overcurrent detection of GANG, support 5V tolerant overcurrent signal input - Support high performance MTT mode, providing independent TT for each port to achieve full bandwidth concurrent transmission, with 4 times the total bandwidth of STT - Support port status LED indicators Configurable via external EEPROM to support composite devices, non-removable devices, custom VIDs, PIDs and port configurations - Built-in information memory, for industry-specific needs can be customized in bulk manufacturer or product information and configuration - Self-developed dedicated USB PHY, low-power consumption technology, significantly reduced compared to the first generation of HUB chips, support self-powered or bus-powered - Self-powered or bus-powered mode configurable via I/O pins or external EEPROM Provide crystal oscillator with built-in capacitor, supports external 12MHz input, and built-in PLL provides 480MHz clock for USB PHY - Built-in 1.5KΩ pull-up resistor on the uplink port, built-in pull-down resistor on the downlink port required for USB Host, streamlined periphery - Built-in LDO linear buck regulator converts USB bus supply voltage to 3.3V operating power for the chip 6KV enhanced ESD performance, Class 3A Industrial-grade temperature range: -40～85℃ QFN28, SOP16, QSOP28 and other small, low-cost, easy-to-process packages are available PDF
Документация на CH334U 

CH334DS1-EN

Дата модификации: 02.01.1970

Размер: 398.8 Кб

32 стр.

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