CDA CD 60 Spezifikationen PDF herunterladen (Seite 62)

PCI CD and PCI CDa

Document Number: 008-00965-06 EDT Public Revision: I December 2004

Template: edt.dot

Page 62

Pseudo-ECL

The PCI CD-40 DMA interface protocol uses AT&T pseudo-emitter-coupled logic (PECL) signal

levels. Pseudo-ECL levels are ECL levels that are shifted by 5 volts to run on a single +5 volts power

supply. These devices are excellent for minimizing electromagnetic interference where data must be

transmitted at very high speeds.

10m

10k

100k

1M 10M

100m

1,000m

10,000m

Cable length (meters)

Data rate (bits/second)

PECL Data Signaling Rate and Cable Length

For further information, see The 41 Series of High Performance Line Drivers, Receivers, and

Transceivers, Jan. 1991 Data Book and Designers Guide, available from AT&T Microelectronics,

CA91-001DBIP.

LVDS

The PCI CD-60 DMA interface protocol uses low-voltage differential signaling, a new standard for

faster signaling at lower power, compatible with IEEE 1596.3 SCI LVDS standard, and conforming to

ANSI/TIA/EIA-644 LVDS standard.

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CDA CD 60 Spezifikationen Seite 62