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The TMS38052NL is a communication controller manufactured by Texas Instruments (TI). Below are the factual specifications, descriptions, and features:

Specifications:

• Manufacturer: Texas Instruments (TI)
• Part Number: TMS38052NL
• Type: Communication Controller
• Technology: NMOS
• Operating Voltage: 5V
• Package: Plastic DIP (Dual In-line Package)
• Pin Count: 68
• Operating Temperature Range: Typically commercial (0°C to 70°C)

Descriptions:

• The TMS38052NL is a Token Ring Network Coprocessor, designed to manage communication in Token Ring LANs (Local Area Networks).
• It interfaces with a TMS38010 or TMS38020 protocol handler to implement the IEEE 802.5 Token Ring standard.
• It provides DMA (Direct Memory Access) support for efficient data transfer between the network and host system.

Key Features:

• Token Ring Protocol Support: Compliant with IEEE 802.5 standards.
• DMA Controller: Facilitates high-speed data transfers.
• Interrupt Handling: Supports system interrupts for event-driven operations.
• On-Chip Buffers: Includes internal FIFO buffers for data management.
• Host Interface: Compatible with standard microprocessor buses.
• Error Detection: Includes CRC (Cyclic Redundancy Check) for data integrity.

This chip was primarily used in early Token Ring networking equipment and is now considered obsolete.

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