Z16C3220VSC00TR

Overview

The Z16C3220VSC00TR is a CMOS Integrated Universal Serial Controller (IUSC) manufactured by Zilog. It integrates dual-channel DMA with a high-speed serial communications channel to facilitate higher data throughput than discrete combinations. The device supports 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. It features 32-byte FIFOs for both receiver and transmitter and offers up to 12.5 MByte/sec data bus bandwidth. The IUSC operates on a 4.5V to 5.5V supply with a typical current of 7mA. It is housed in a 68-pin PLCC package and functions as a controller within the IUSC series.

Feature Summary

• Dual-channel DMA with 32-bit addressing and support for single buffer, pipelined, array-chained, and linked-list modes.
• Multiprotocol operation supporting asynchronous, HDLC/SDLC, byte-oriented synchronous, and transparent Bisync formats.
• Flexible bus interface compatible with 680X0 and 8086 families, configurable for 8 or 16-bit data widths.
• Integrated time slot assigners for ISDN, T1, and E1 applications with programmable throttling of DMA bus occupancy.

Applications

• High-speed serial data communications requiring multiprotocol support.
• ISDN, T1, and E1 telecommunication systems utilizing time slot assignment.
• Systems requiring direct connection to microprocessors with minimal CPU overhead via DMA integration.

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm the specific ordering suffix matches system requirements. Check for end-of-life status and availability of replacement components. Ensure environmental compliance documentation aligns with project specifications. Validate packaging type against handling capabilities.

Selection Notes

Evaluate compatibility with host processor bus architecture, specifically regarding multiplexed or non-multiplexed configurations. Assess memory requirements for DMA buffer chaining and linked list structures. Consider power supply constraints within the specified voltage range. Verify thermal management needs for the operating temperature range. Review interrupt handling capabilities for system latency requirements.

Part Context

This component belongs to the Z16C32 IUSC series, designed for integrated universal serial control. It combines serial communication capabilities with on-chip DMA to reduce board space and chip count. The series targets applications demanding high throughput and flexible protocol support without heavy CPU intervention.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult manufacturer documentation for obsolescence notices and recommended alternatives.