Overview
Description
The 1893BF is a low-power, physical-layer device (PHY) that supports the ISO/IEC 10Base-T and 100Base-TX Carrier-Sense Multiple Access/Collision Detection (CSMA/CD) Ethernet standards, ISO/IEC 8802-3.
The 1893BF is intended for MII, node applications that require the Auto-MDIX feature that automatically corrects crossover errors in plant wiring.
The 1893BF incorporates Digital-Signal Processing (DSP) control in its Physical-Medium Dependent (PMD) sublayer. As a result, it can transmit and receive data on Unshielded Twisted-Pair (UTP) Category 5 cables with attenuation in excess of 24dB at 100MHz. With this patented technology, the 1893BF can virtually eliminate errors from killer packets.
The 1893BF provides a Serial-Management Interface for exchanging command and status information with a Station-Management (STA) entity. The 1893BF Media-Dependent Interface (MDI) can be configured to provide either half- or full-duplex operation at data rates of 10Mb/s or 100Mb/s.
Comparison
Applications
- Supports Category 5 cables with attenuation in excess of 24dB at 100MHz.
- Single-chip, fully integrated PHY provides PCS, PMA, PMD, and AUTONEG sublayers functions of IEEE standard
- 10Base-T and 100Base-TX IEEE 8802.3 compliant
- Single 3.3V power supply
- Highly configurable, supports:
- Media Independent Interface (MII)
- Auto-negotiation with parallel detection
- Node applications, managed or unmanaged
- 10M or 100M full and half-duplex modes
- Loopback mode for diagnostic functions
- Auto-MDI/MDIX crossover correction
- Low-power CMOS (typically 400mW)
- Power-down mode typically 21mW
- Clock and crystal supported
- Fully integrated, DSP-based PMD includes:
- Adaptive equalization and baseline-wander correction
- Transmit wave shaping and stream cipher scrambler
- MLT-3 encoder and NRZ/NRZI encoder
- Small footprint 48-pin 300mil. SSOP package
- Also available in a small footprint 56-pin 8mm x 8mm MLF2 package
- Available in industrial temperature and lead-free
Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
| SSOP | 48 | I | Yes | Tube | 3 | 7.925 | Get Samples, | |
| SSOP | 48 | I | Yes | Reel | 3 | 8.621 | ||
| VFQFPN | 56 | I | Yes | Tray | 3 | Get Samples, | ||
| VFQFPN | 56 | I | Yes | Reel | 3 | 12.22 |
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