DNC3X3425

Features:

Ports individually configurable
Autonegotiation and management:
   - Fast link pulse (FLP) burst generator.
   - Arbitration function.
   - Accepts preamble suppression.
   - Operates up to 12.5 MHz.
Supports the MII station management protocol and frame format (clause 22): basic and extended register set.
Supports next page.
Provides status signals: receive activity, transmit activity, full duplex, collision/jabber, link integrity, and speed indication.
Powerdown mode for 10 Mbits/s and 100 Mbits/s operation.
Loopback testing for 10 Mbits/s and 100 Mbits/s operation.
0.25 m low-power CMOS technology.
Single 3.3 V power supply operation.
25 MHz XTAL oscillator input or 25 MHz/50 MHz/125 MHz clock input.
Compatible with RMII (standard version) and SMII (standard version).


Pinout




Specifications

Parameter	Symbol	Min	Max	Unit
Ambient Operating Temperature	TA	0	70
Storage Temperature	Tstg	40	125
Power Dissipation	PD	-	3.5	W
Voltage on Any Pin with Respect to Ground	-	0.5	VDD + 0.5	V
Maximum Supply Voltage	-	-	3.5	V

Description

The DNC3X3425 is a twisted-pair transceiver macrocell that supports transmission and reception over category 3 unshielded twisted-pair (UTP) cable and category 5 UTP.

The DNC3X3425 has been designed specifically for applications that support both 10Base-T and 100Base-X, such as network interface cards (NICs) and switches.

Figure 1 represents a functional block diagram of the DNC3X3425 macrocell.

Figure 2 shows the I/Os of the DNC3X3425 macrocell.