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H16550S: Synchronous 16550 UART with FIFO Core

Computer Aided Software Technologies, Inc (dba CAST)

Member

The H16550S is a standard UART providing 100% software compatibility with the popular Texas Instruments 16550 device. It performs serial-to-parallel conversion on data originating from modems or other serial devices, and performs parallel-to-serial conversion on data from a CPU to these devices. The H16550S can be run in either 16450-compatible character mode or in 16550-compatible FIFO mode, where an internal FIFO relieves the CPU of excessive software overhead. Developed for easy reuse in FPGA or ASIC applications, the H16550S is available optimized for several technologies with competitive utilization and performance characteristics.

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Key Features

  • Capable of running all existing 16450 and 16550a software
  • Fully Synchronous design. All inputs and outputs are based on rising edge of clock
  • In FIFO mode, the transmitter and receiver are each buffered with 16 byte FIFOs to reduce the number of interrupts presented to the CPU
  • Adds or deletes standard asynchronous communication bits (start, stop and parity) to or from the serial data
  • Independently controlled transmit, receive, line status and data set interrupts
  • Programmable baud generator divides any input clock by 1 to (2^16 - 1) and generates the 16x clock
  • Modem control functions (CTSn, RTSn, DSRn, DTRn, RIn, and DCDn)
  • Fully programmable serial interface characteristics: characters, parity, stop bit, baud generation
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Offering Brief

Offering Brief

Device Family Arria® V GT FPGA, Arria® V GX FPGA, Arria® V GZ FPGA, Arria® V ST SoC FPGA, Arria® V SX SoC FPGA, Cyclone® IV E FPGA, Cyclone® IV GX FPGA, Cyclone® V E FPGA, Cyclone® V GT FPGA, Cyclone® V GX FPGA, Cyclone® V SE SoC FPGA, Cyclone® V ST SoC FPGA, Cyclone® V SX SoC FPGA, Agilex® 3 FPGAs and SoC FPGAs C-Series, Agilex® 5 FPGAs and SoC FPGAs D-Series, Agilex® 5 FPGAs and SoC FPGAs E-Series, Agilex® 7 FPGAs and SoC FPGAs F-Series, Agilex® 7 FPGAs and SoC FPGAs I-Series, Agilex® 7 FPGAs and SoC FPGAs M-Series, Agilex® 9 FPGAs and SoC FPGAs Direct RF-Series, Arria® 10 GT FPGA, Arria® 10 GX FPGA, Arria® 10 SX SoC FPGA, Cyclone® 10 GX FPGA, Cyclone® 10 LP FPGA, MAX® 10 FPGA, Stratix® 10 AX SoC FPGA, Stratix® 10 DX FPGA, Stratix® 10 GX FPGA, Stratix® 10 SX SoC FPGA, Stratix® 10 TX FPGA, Stratix® IV E FPGA, Stratix® IV GX FPGA, Stratix® V GS FPGA, Stratix® V GX FPGA
Offering Status Production
Integrated Testbench Yes
Evaluation License Yes
Design Examples Available Yes
Demo No
Compliance Yes
Latest Quartus Version Supported 24.3.1
Development Language Encrypted Verilog, Encrypted VHDL, Verilog, VHDL

Verilog/System Verilog, Encrypted Verilog, VHDL, Encrypted VHDL, or FPGA Netlist

Sample integration testbench

System Verilog Testbench

Comprehensive Documentation

Ordering Information

H16550S

from Direct

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Market Segment and Sub-Segments

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Defense

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Defense

MIL COMMS

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Industrial

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Industrial

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Industrial / Manufacturing

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Test

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Test

ATE

Communication Tester

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