Z16C3220VSC

Overview

The Z16C3220VSC is a Zilog Integrated Universal Serial Controller (IUSC) featuring two full-capacity DMA channels with 32-bit addressing and 16-bit data transfers. It supports serial data rates from 0 to 20 Mbit/sec in full-duplex mode, utilizing two baud rate generators and a digital phase-locked loop for clock recovery. The device includes 32-byte FIFOs for both receiver and transmitter operations. It offers multiprotocol support including asynchronous, HDLC/SDLC, BISYNC, and ISDN/T1/E1 time slot assignment. The flexible bus interface supports 8 or 16-bit widths and connects directly to 680X0 or 8086 families. The component is housed in a 68-pin PLCC package.

Feature Summary

• Dual-channel DMA with array-chained and linked-list modes for automated buffer management
• Multiprotocol serial controller supporting asynchronous, HDLC, SDLC, and Bisync formats
• Integrated 32-byte receive and transmit FIFOs with programmable throttling
• Flexible bus interface compatible with multiplexed and non-multiplexed microprocessor buses

Applications

• ISDN, T1, and E1 (CEPT) applications with time slot assigners
• High-throughput data communications requiring reduced CPU overhead
• Systems requiring direct connection to 680X0 or 8086 family processors
• Multiprotocol serial communication interfaces

Procurement Notes

Verify the specific suffix 'VSC' against the official Zilog datasheet PS97USC0200 to confirm voltage ratings, temperature range, and packaging details. Ensure compatibility with system power supplies and environmental specifications before integration. Cross-reference ordering information with authorized distributors to confirm current availability and exact part marking.

Selection Notes

Select this component when high-speed serial communication combined with efficient DMA handling is required. It is suitable for designs needing support for multiple protocols such as HDLC and Bisync without external protocol controllers. Consider the 68-pin PLCC package constraints and ensure the host processor bus interface matches the configurable 8/16-bit options provided by the IUSC.

Part Context

The Z16C32 series represents Zilog's Integrated Universal Serial Controller line, designed to reduce board space and chip count by combining serial control with DMA capabilities. This specific model variant integrates dual DMA channels with a versatile serial engine, targeting applications demanding high data throughput and flexible protocol support in embedded systems.

Replacement Considerations

Consult the Zilog datasheet for officially documented substitute part numbers. Verify pinout compatibility and functional equivalence before substitution. No alternative part numbers are confirmed in the provided source material.