JAJSQ97J may 2009 – january 2021 XIO2001
PRODUCTION DATA
The XIO2001 has a PCI bus I/O clamp rail (PCIR) that can be either 3.3 V or 5 V, depending on the system implementation. For 25-MHz or 33-MHz PCI bus implementations, PCIR may be connected to either 3.3 V or 5.0 V. For 50-MHz or 66-MHz PCI bus implementations, a 3.3-V connection is the only approved configuration. The power source for this clamp rail is a standard digital supply. The power source for this clamp rail is a standard digital supply. The PCIR terminals should be connected to the digital supply via an inline 1 k Ω resistor. A 0.1- μ F decoupling capacitor is also recommended at each PCIR terminal.
If PCIR is attached to a 5.0-V supply, the XIO2001 will only output 3.3-V amplitude signals on the PCI bus. The received PCI bus signal amplitudes may be either 3.3 V or 5.0 V. The PCI bus I/O cells are 5.0-V tolerant and the XIO2001 device is not damaged by 5.0-V input signal amplitudes.