Browse Prior Art Database

Mechanism to Capture Read Data

IP.com Disclosure Number: IPCOM000099252D
Original Publication Date: 1990-Jan-01
Included in the Prior Art Database: 2005-Mar-14
Document File: 1 page(s) / 31K

Publishing Venue

IBM

Related People

Arimilli, R: AUTHOR [+4]

Abstract

On the MICRO CHANNEL* bus, read data is provided ns after the falling edge of the signal CMD. The signal is typically 100 ns, giving a data setup time of 40 ns. the read data is captured on a CMOS chip, external is required. When the clock used to generate the signal is also used to capture the data, the timings extremely tight.

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Mechanism to Capture Read Data

       On the MICRO CHANNEL* bus, read data is provided ns after
the falling edge of the signal CMD.  The signal is typically 100 ns,
giving a data setup time of 40 ns. the read data is captured on a
CMOS chip, external is required.  When the clock used to generate the
signal is also used to capture the data, the timings extremely tight.

      This critical timing is relaxed by using the delayed of the CMD
signal to latch the read data.  This the off-chip driver (OCD) and
receiver delays. The is shown in the figure.  Trademark of the IBM
Corporation.