DM9331
100 Mbps Twisted Pair/Fiber Ethernet Media Converter Chip
4
Preliminary
Version: DM9331-DS-P02
September 21, 2001
Features
100Base-TX to 100Base-FX media converter
application chip set.
100Base-FX to 100Base-FX repeater application
chip set under full duplex mode.
100Base-TX to 100Base-TX repeater application
chip set under full duplex mode.
Optional Fault propagation on no link condition.
Fully compliant with IEEE 802.3u 100Base-TX/FX
Compliant with ANSI X3T12 TP-PMD 1995
standard
Supports Auto-Negotiation function to 100 Mbps
full/half duplex, compliant with IEEE 802.3u.
Remote fault detection capability
Far end fault signaling option in FX mode
Selectable twisted-pair or fiber mode output
Selectable full-duplex or half-duplex operation
Provides Loopback mode for easy system
diagnostics
LED status outputs indicate Link/Activity, Full/Half-
duplex and Fault LED.
Single Low-Power Supply of 3.3V with 0.35μm CMOS
technology
Very Low Power consumption modes:
●
Power Reduced mode (cable detection)
●
Power Down mode
●
Selectable TX drivers for 1:1 or 1.25:1 transformers
for additional power reduction.
Compatible with 3.3V and 5.0V tolerant I/Os
48-pin LQFP small package (1x1 cm)