TP3465V/63SN

Specialized Overview

The TP3465V/63SN is a MICROWIRE Interface Device (MID) in a 28-pin PLCC package. It enables microprocessors to communicate with up to eight serial peripherals by mapping them as memory locations. The device supports National/Intel and Motorola bus formats in multiplexed or non-multiplexed modes. It accepts a master clock input up to 20 MHz and generates MICROWIRE clocks up to 5 MHz. Operating voltage is +5V, with a commercial temperature range of 0°C to +70°C.

Specialized Feature Summary

• Supports both multiplexed and non-multiplexed microprocessor bus interfaces compatible with National/Intel and Motorola architectures.
• Provides hardware-assisted chip select generation for up to eight MICROWIRE peripherals, allowing peripherals to appear as memory-mapped locations.
• Features programmable MICROWIRE clock rates derived from the system clock to accommodate various peripheral speeds.
• Capable of operating as either a MICROWIRE bus master or slave.

Specialized Applications

• ISDN terminal adapters
• Digital line cards (ISDN and Non-ISDN)
• Analog linecards using COMBO devices
• Interfacing to industry standard serial EEPROMs
• Interfacing to analog-to-digital converters and LCD drivers

Specialized Procurement Notes

Verify the component marking against the datasheet identifier TP3465V. Confirm the package type is 28-pin PLCC. Ensure the suffix matches the specific variant requirements. Check for authenticity through authorized channels. Review the absolute maximum ratings before integration.

Specialized Selection Notes

Select this device when interfacing parallel microprocessors to multiple serial MICROWIRE peripherals. It is suitable for systems requiring memory-mapped access to serial devices. Consider the bus format compatibility with the host processor. Evaluate the clock division requirements for peripheral synchronization.

Specialized Part Context

The TP3465 is part of the MICROWIRE Interface Device family developed by National Semiconductor, now Texas Instruments. It serves as a bridge between parallel microprocessor buses and serial MICROWIRE peripherals. The device simplifies system design by handling serialization protocols automatically.

Specialized Replacement Considerations

Consult official replacement lists for equivalent interface devices. Verify pinout compatibility if substituting. Ensure functional equivalence in bus protocol support. Check package dimensions for mechanical fit.

Specialized FAQ

How does the MID handle chip selection for peripherals?

The MID supports software-controlled chip select via the CS register and hardware-assisted chip select via FMBD registers. Hardware mode automatically activates and deactivates pins during data transfer.

Can the TP3465 operate as a MICROWIRE slave?

Yes, by setting the ms bit in the SKR register to 1. In slave mode, the CKIN pin provides the clock, and the SO pin outputs data based on incoming clock pulses.

What is the function of the MULT/INT pin?

In non-multiplexed mode, it acts as an interrupt output indicating MICROWIRE transfer completion. In multiplexed mode, it indicates the bus format when pulled low.