TetraHub™ High-Speed USB Hub Controller CY7C65640A is a USB 2.0 hub controller that supports four downstream ports, each with a multi-transaction translator for maximum performance. The controller also supports VID, PID, and DID configuration from external SPI EEPROM and a 24MHz external crystal.
The CY7C65640A is Cypress’s TetraHub™ high‑performance, self‑powered USB 2.0 hub controller. It provides four downstream ports, each with its own Transaction Translator, and can be configured via an external SPI EEPROM for VID, PID, DID and other options.
The manual covers system initialization, enumeration, power‑switching, over‑current detection, port indicator operation, pin descriptions, and USB descriptor tables, giving designers the information needed to integrate the device into standalone hubs, motherboard hubs, or monitor hub applications.
| USB version | 2.0 |
|---|---|
| Number of downstream ports | 4 |
| Transaction Translators | One per downstream port |
| External crystal frequency | 24 MHz |
| Package type | Quad Flat Pack (QFN) 8 mm × 8 mm |
| Integrated upstream pull‑up resistor | Yes |
| Integrated downstream pull‑down resistors | Yes (for all downstream ports) |
| Series termination resistors | Integrated on upstream and downstream D+ / D‑ lines |
The device provides four downstream ports.
The TT translates high‑speed split transactions to full‑ or low‑speed transactions for downstream devices when the hub operates at high speed.
Over‑current detection uses an 8 ms default timer (configurable via EEPROM) and reports the condition through the OVR pins, disabling the corresponding power output.