H16450S
Features
- UART runs all existing 16450 software
- Fully synchronous design — all inputs and outputs are based on the rising edge of clock
- Standard asynchronous communication bits (start, stop, and parity) can be added to or deleted from the serial data
- Transmit, receive, line status, and data set interrupts are controlled independently
- Programmable baud generator divides any input clock by 1 to (216-1) and generates the 16x clock
- Independent receiver clock input
- Modem control functions (CTSn, RTSn, DSRn, DTRn, RIn, and DCDn)
- Fully programmable serial interface
- False start bit detection
- Complete status register
- Internal diagnostic capabilities: loopback controls for communications link fault isolation
- Full prioritized interrupt system controls
- VHDL and Verilog versions available
Block Diagram
Figure 1 shows a block diagram of the function.
Figure 1. H16450S Block Diagram 
Description
The H16450S is a standard UART and is fully compatible with the Texas Instruments 16450 device. It performs serial-to-parallel conversion on data originating from modems or other serial devices, and parallel-to-serial conversion on data from a CPU to these devices.
The H16450S UART is designed for easy reuse in Altera® FPGA applications, and users can optimize it for several device families with competitive utilization and performance characteristics.
Device Utilization & Performance
Table 1 lists the typical device utilization results for the megafunction.
| Table 1. Typical Device Utilization for the Megafunction |
| Target Device |
Speed Grade |
Utilization |
Performance
fmax |
| Logic Elements (LEs) |
Embedded array blocks (EABs) |
I/O Pins |
| EPF10K30E |
-1 |
418 |
- |
39 |
86 MHz |
| EP20K30E |
-1 |
433 |
- |
39 |
91 MHz |
| EP1K10 |
-1 |
418 |
- |
39 |
90 MHz |
Deliverables
- EDIF netlist
- Assignment & configuration
- Symbol file
- Include file
- Vectors for testing the functionality (including expected results) of the megafunction
- Documentation
Contact Information
For additional information, contact:
CAST, Inc.
11 Stonewall Court
Woodcliff Lake, NJ 07677
Tel: (201) 391-8300
Fax: (201) 391-8694
E-mail: info@cast-inc.com
WWW: http://www.cast-inc.com
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