Slew rate control circuit for small computer system interface (SCSI) differential driver
US7298173B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2005 |
| Grant date | Nov 20, 2007 |
| Priority date | — |
| Expiry date | Dec 2, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/06
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A small computer system interface (SCSI) driver circuit having a programmable slew rate comprises N cascaded delay cells each including a data bit input, a delayed data bit output that communicates with the data bit input of an adjacent one of the N cascaded delay cells, and a delay time input that receives a programmable delay time value for setting a variable delay between receiving data at the data bit input and generating the delayed data bit output. N predrivers receive an output enable signal and a corresponding one of the N delayed data bit outputs and generate a predriver output signal based on the output enable and the corresponding one of the N delayed data bit outputs. N drivers have inputs that receive predriver output signals from corresponding ones of the N predrivers. An output port communicates with outputs of the N drivers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.