ML6691*

Supply Voltage (V_CC) ............................................... 6.0V
GND................................................ 0.3V to VCC + 0.3V
Logic Inputs .................................. 0.3V to VCC + 0.3V
Input Current per Pin.......................................... ±25mA
Storage Temperature........................... 65 to +150
Package Dissipation at T_A = 25 ...................... 750mW
Lead Temperature (soldering 10 sec.) ................. 300

The ML6691* implements the upper portion of the physicallayer for the Fast Ethernet 100BASE-T standard. Functionscontained in the ML6691* include a 4B/5B encoder/decoder, a Stream Cipher scrambler/descrambler, andcollision detect. Additional functions of the ML6691* -accessible through the two-wire MII managementinterface - include full duplex operation, loopback,power down mode, and MII isolation.

The ML6691* is designed to interface to a 100BASE-TEthernet Media Access Controller (MAC) via the MII(Media Independent Interface) on one side, and a100BASE-X PMD transceiver on the other side. Acomplete 100BASE-TX physical layer (PHY) solution isrealized using the ML6691*, the ML6673, and one of theavailable clock recovery/generation devices. A 100BASEFXphysical layer solution is implemented by disabling thescrambler function of the ML6691 and using an external optical PMD.