Серия Интерфейсы USB CH338

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Документация на серию CH338

CH338 Datasheet https://wch-ic.com 7-port USB HUB Controller Chip CH338 Datasheet Version: V1.1 https://wch-ic.com 1. Overview CH338 is a 7-port USB HUB controller chip that complies with the USB2.0 protocol specification. The upstream port supports USB2.0 high-speed and full-speed, the downstream port supports USB2.0 high-speed 480Mbps, fullspeed 12Mbps and low-speed 1.5Mbps. It not only supports the low-cost STT mode (A single TT schedules 7 downstream ports in a time-sharing manner), but also supports the high-performance MTT mode (7 TTs each correspond to one port and are processed concurrently). In addition to the HUB controller function, some models also support PD function. Industrial-grade design, streamlined peripherals, can be applied to computer and industrial computer motherboards, peripherals, embedded systems, etc. The figure below is the system block diagram of CH338. Figure 1-1 System block diagram USPORT Transceiver Type-C PD UTMI SMBUS I2C LED Controller USPORT Routing Logic HS REPEATER FS/LS REPEATER TT*7 TT*7 TT*7 TT*7 TT*7 TT*7 TT*7 HUB Controller RAM ROM DSPORT Routing Logic DSPORT1 Transceiver DSPORT2 Transceiver DSPORT3 Transceiver DSPORT4 Transceiver DSPORT5 Transceiver DSPORT6 Transceiver DSPORT7 Transceiver The figure above is the internal structure block diagram of the HUB controller system. HUB controller mainly includes three modules: Repeater, TT and controller. The controller is similar to an MCU processor and is used for global management and control. When the speed of the upstream port and the downstream port are consistent, the routing logic will connect the port to the Repeater. When the speed of the upstream port and the downstream port are inconsistent, the routing logic will connect the port to the TT. V1.1 1  PDF

Документация на CH338F 

CH338DS1-EN

Дата модификации: 11.03.2024

Размер: 1.93 Мб

31 стр.

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Товары серии CH338