TL16PC564BGGM

Overview

The TL16PC564BGGM is a Texas Instruments integrated asynchronous communications element (ACE) designed for PCMCIA Card Standard Release 2.01 subsystems. It combines a TL16C550 UART core with PCMCIA interface logic and dual-port attribute memory in a 100-pin MicroStar BGA package. The device supports 3.3-V or 5-V supply voltages and includes a fully programmable 256-byte card information structure (CIS) and eight 8-byte card configuration registers (CCR). It features selectable normal 16-byte FIFO mode or an extended 64-byte FIFO mode, subsystem-selectable serial-bypass capability, and auto-flow control functions.

Feature Summary

• Integrates a TL16C550-compatible UART core with dedicated PCMCIA interface logic to facilitate serial-to-parallel conversion between modem/CODEC functions and the PCMCIA parallel data port.
• Provides dual-port random-access memory (DPRAM) for the 256-byte CIS and eight CCRs, allowing simultaneous access by both the host CPU and the subsystem without external EEPROM.
• Supports subsystem-selectable serial-bypass mode, enabling direct parallel access to the receiver and transmitter FIFOs while maintaining standard interrupt operation.

Applications

• Universal asynchronous receiver-transmitter (UART) subsystem interfaces for Personal Computer Memory Card International Association (PCMCIA) cards
• Serial-to-parallel data conversion for modem coder-decoder or digital signal processor (CODEC/DSP) functions within PCMCIA modules
• Subsystem interfaces requiring common I-Bus or Z-Bus microcontroller compatibility

Procurement Notes

Verify that the component matches the specific 100-ball GGM MicroStar BGA package variant. Confirm the operating voltage requirements align with the system design, as the device supports both 3.3-V and 5-V supplies. Ensure the application utilizes the correct PCMCIA interface signals and arbitration clock configurations as defined in the official datasheet.

Selection Notes

Select this component when a unified solution for PCMCIA UART communication and attribute memory management is required. It is suitable for designs needing compatibility with Intel or Zilog microcontroller subsystems via the SELZ/I pin. Consider the extended 64-byte FIFO mode if higher throughput is necessary compared to standard 16-byte implementations.

Part Context

This part belongs to the TL16PC564B/BLV family of integrated asynchronous communications elements. It is specifically engineered to meet the functional requirements of the PCMCIA Card Standard Release 2.01. The device consolidates multiple discrete components into a single chip to reduce board space and simplify interface design for PCMCIA-based communication devices.

Replacement Considerations

The TL16PC564B/PZ is a pin-compatible alternative available in a 100-pin Thin Quad Flatpack (PZ) package. Substitution requires verification of the physical footprint differences between the BGA and QFP packages.