The OX16PCI954 is a single chip solution for PCI-based serial communication, featuring four 16C950 high performance UART channels, 8/32-bit Pass-through Local Bus, IEEE1284 EPP parallel port and multi-function target PCI controller, fully PCI 2.2 and PCI Power Management 1.0 compliant.
The OX16PCI954 is a multi‑function PCI device that integrates four high‑performance 16C950 UART channels, an 8/32‑bit pass‑through Local Bus, and an IEEE1284 EPP parallel port. It supports baud rates up to 15 Mbps in asynchronous mode and up to 60 Mbps with an external 1× clock, and each UART provides a 128‑byte deep FIFO for both transmit and receive.
The device is supplied in a 160‑lead TQFP package and operates at 5.0 V. It offers 12 configurable multi‑purpose I/O pins, optional EEPROM re‑configuration, and full PCI 2.2 and Power Management 1.0 compliance. Detailed register maps, block diagrams, and pin descriptions are provided for system designers.
| UART channels | Four 16C950 high‑performance UART channels |
|---|---|
| FIFO depth per UART | 128‑byte deep FIFO for transmitter and receiver |
| Maximum baud rate (asynchronous) | 15 Mbps |
| Maximum baud rate (external 1× clock) | 60 Mbps |
| Package type | 160‑lead TQFP |
| Operating voltage | 5.0 V |
| Local Bus width | 8‑bit or 32‑bit pass‑through |
| Parallel port | IEEE1284 EPP parallel port |
| Multi‑purpose I/O pins | 12 configurable pins |
The device supports up to 15 Mbps in asynchronous mode and up to 60 Mbps when using an external 1× clock.
It provides four high‑performance 16C950 UART channels.
The chip is supplied in a 160‑lead TQFP package.
Yes, it includes an IEEE1284 EPP parallel port that can be enabled in place of the Local Bus.