The recommended operating temperature range for the PCI2250PCMG4 is 0°C to 70°C (commercial temperature range) or -40°C to 100°C (industrial temperature range), depending on the specific device grade.
The PCI2250PCMG4 can be configured for 3.3V or 5V operation by setting the VCCIO pin to the desired voltage level. Additionally, the device's voltage regulator can be bypassed by connecting the VCCIO pin to an external voltage source.
The maximum clock frequency supported by the PCI2250PCMG4 is 66 MHz, which is the maximum clock frequency specified by the PCI Local Bus specification.
Clock stretching can be implemented on the PCI2250PCMG4 by using the device's clock control logic to delay the clock signal. This can be done by setting the CLKRUN# pin low to request a clock delay, and then releasing it when the device is ready to resume clock operation.
The REQ# (request) and GNT# (grant) pins are used to implement a request-grant protocol for accessing the PCI bus. The REQ# pin is used by the device to request access to the bus, and the GNT# pin is used by the bus master to grant access to the bus.
PCI2250PCMG4 datasheet
by Texas Instruments
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