PDIUSBH11 is a USB hub IC produced by Philips Semiconductors, supports USB 1.0 protocol, and complies with USB Human Interface and Display Device Class specifications.
The Philips Semiconductors PDIUSBH11 is a compound Universal Serial Bus (USB) hub integrated circuit that combines a hub with an embedded function. It features four downstream ports with per-packet connectivity and communicates with the system microcontroller over an I2C serial bus using two endpoints for control and interrupt functions.
The device includes an integrated FIFO memory to handle data rate differences between USB and I2C interfaces, automatic protocol handling via a hardwired Serial Interface Engine (SIE), and versatile I2C interface capabilities. It is designed for applications such as computer monitors and keyboards, complying with USB specification Rev. 1.0.
| USB Specification Compliance | Universal Serial Bus specification Rev. 1.0 |
|---|---|
| Supply Voltage | 3.3V + 0.3V |
The default control endpoint supports a maximum transfer of 8 bytes, and the interrupt endpoint also supports up to 8 bytes.
The mode is determined by the voltage levels at the TEST1 and TEST2 pins during power-up; connecting both to Ground enables Mode 0, while connecting them to Vcc enables Mode 1.